Daikin VRV III REYQ10PY1B Service Manual Download | Manualshive

Page: 274 / 472

background image

SiBE37-701

Troubleshooting by Indication on the Remote Controller

Troubleshooting

263

Troubleshooting

NO

Electronic

expansion valve is

connected to X7A of

indoor unit PC

board.

Coil

check (

∗

1) of

electronic expansion valve

drive indicates

normal.

NO

NO

YES

Relay

cables short circuit or

disconnected.

YES

Shut the power supply off after
connection and then restart.

Replace coil of electronic
expansion valve.

Replace relay cables.

When restarting the operation after
shutting the power supply off does
not work, replace indoor unit PC
board.

NO

Replace electronic expansion
valve main body.

When power is supplied.

YES

YES

∗

1: How to check the coil of electronic expansion valve drive

Remove the connector for electronic expansion valve (X7A) from PC board. Measure the resistance
value between pins and check the continuity to judge the condition.

1) White

2) Yellow

3) Orange

4) Blue

6) Brown

5) Red

The normal products will show the following conditions:

No continuity between (1) and (2)

Resistance value between (1) and (3) is approx. 300

Ω

Resistance value between (1) and (5) is approx. 150

Ω

Resistance value between (2) and (4) is approx. 300

Ω

Resistance value between (2) and (6) is approx. 150

Ω

White (1)

Red (5)

Orange (3)

φ

1

φ

3

Yellow

(2)

Brown

(6)

Blue

(4)

φ

2

φ

4

M

Caution

Be sure to turn off power switch before connect or disconnect connector,
or parts damage may be occurred.

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Summary of Contents for VRV III REYQ10PY1B

Page 1: ...REYQ8 48PY1B R 410A Heat Recovery 50Hz SiBE37 701 ...

Page 2: ...21 1 3 BS Units 54 Part 3 Refrigerant Circuit 55 1 Refrigerant Circuit 56 1 1 REYQ8P 10P 12P 56 1 2 REYQ14P 16P 58 1 3 REMQ8P Multi 8HP 60 1 4 REMQ10P 12P Multi 10 12HP 62 1 5 REMQ14P 16P Multi 14 16HP 64 1 6 BS Unit Functional Parts 66 1 7 Indoor Units 67 2 Functional Parts Layout 68 2 1 REYQ8P 10P 12P 68 2 2 REYQ14P 16P 69 2 3 REMQ8P 70 2 4 REMQ10P 12P 71 2 5 REMQ14P 16P 72 3 Refrigerant Flow fo...

Page 3: ...ibition 138 6 Outline of Control Indoor Unit 139 6 1 Operation Flow Chart 139 6 2 Thermostat Control 141 6 3 Drain Pump Control 145 6 4 Control of Electronic Expansion Valve 147 6 5 Freeze Prevention 148 6 6 Heater Control Optional PC Board KRP1B is required 149 6 7 List of Swing Flap Operations 150 6 8 Hot Start Control In Heating Operation Only 151 6 9 Louver Control for Preventing Ceiling Dirt ...

Page 4: ...t Actuation of High Pressure Switch 273 3 15 E4 Outdoor Unit Actuation of Low Pressure Sensor 275 3 16 E5 Outdoor Unit Inverter Compressor Motor Lock 277 3 17 E6 Outdoor Unit STD Compressor Motor Overcurrent Lock 279 3 18 E7 Outdoor Unit Malfunction of Outdoor Unit Fan Motor 280 3 19 E9 Outdoor Unit Malfunction of Moving Part of Electronic Expansion Valve Y1E Y5E 283 3 20 F3 Outdoor Unit Abnormal ...

Page 5: ...ansmission between Remote Controller and Indoor Unit 336 3 50 U7 Outdoor Unit Transmission Failure Across Outdoor Units 337 3 51 U8 Indoor Unit Malfunction of Transmission between Main and Sub Remote Controllers 343 3 52 U9 Indoor Unit Malfunction of Transmission between Indoor and Outdoor Units in the Same System 344 3 53 UA Improper Combination of Indoor and Outdoor Units Indoor Units and Remote...

Page 6: ...on Point 431 5 1 Piping Installation Point 431 5 2 The Example of a Wrong Pattern 432 6 Example of connection 433 7 Thermistor Resistance Temperature Characteristics 437 8 Pressure Sensor 439 9 Method of Checking the Inverter s Power Transistors and Diode Modules 440 9 1 Method of Checking the Inverter s Power Transistors and Diode Modules 440 Part 8 Precautions for New Refrigerant R 410A 443 1 Pr...

Page 7: ... plug socket before disassembling the equipment for a repair Working on the equipment that is connected to a power supply can cause an electrical shook If it is necessary to supply power to the equipment to conduct the repair or inspecting the circuits do not touch any electrically charged sections of the equipment If the refrigerant gas discharges during the repair work do not touch the dischargi...

Page 8: ...the applicable model and appropriate tools to conduct repair work Never attempt to modify the equipment The use of inappropriate parts or tools can cause an electrical shock excessive heat generation or fire When relocating the equipment make sure that the new installation site has sufficient strength to withstand the weight of the equipment If the installation site does not have sufficient streng...

Page 9: ...vice valve to prevent the refrigerant gas from leaking into the room The refrigerant gas itself is harmless but it can generate toxic gases when it contacts flames such as fan and other heaters stoves and ranges When replacing the coin battery in the remote controller be sure to disposed of the old battery to prevent children from swallowing it If a child swallows the coin battery see a doctor imm...

Page 10: ...al shock Be sure to measure the insulation resistance after the repair and make sure that the resistance is 1 Mohm or higher Faulty insulation can cause an electrical shock Be sure to check the drainage of the indoor unit after the repair Faulty drainage can cause the water to enter the room and wet the furniture and floor Icon Type of Information Description Note Note A note provides information ...

Page 11: ...eries Heat Recovery System Daikin offers a wide range of models to respond to building and office air conditioning needs We are confident that customers will be able to find the models that best suit their needs This service manual contains information regarding the servicing of VRVIII series R 410A Heat Recovery System Jan 2008 After Sales Service Division ...

Page 12: ...701 General Information 1 Part 1 General Information 1 Model Names of Indoor Outdoor Units 2 2 External Appearance 3 2 1 Indoor Units 3 2 2 Outdoor Units 4 3 Combination of Outdoor Units 5 4 Model Selection 6 ...

Page 13: ...assette FXKQ 25MA 32MA 40MA 63MA VE Slim Concealed Ceiling Unit FXDQ PVE 20P 25P 32P FXDQ NAVE 40NA 50NA 63NA Concealed Ceiling Unit Small FXDQ 20M 25M V3 Concealed Ceiling Unit FXSQ 20M 25M 32M 40M 50M 63M 80M 100M 125M Concealed Ceiling Unit Large FXMQ 40MA 50MA 63MA 80MA 100MA 125MA 200MA 250MA VE Ceiling Suspended Unit FXHQ 32MA 63MA 100MA Wall Mounted Unit FXAQ 20MA 25MA 32MA 40MA 50MA 63MA F...

Page 14: ...ay Blow Ceiling Mounted Cassette FXCQ20M FXCQ25M FXCQ32M FXCQ40M FXCQ50M FXCQ63M FXCQ80M FXCQ125M Wall Mounted Unit FXAQ20MA FXAQ25MA FXAQ32MA FXAQ40MA FXAQ50MA FXAQ63MA Ceiling Mounted Corner Cassette FXKQ25MA FXKQ32MA FXKQ40MA FXKQ63MA Floor Standing Unit FXLQ20MA FXLQ25MA FXLQ32MA FXLQ40MA FXLQ50MA FXLQ63MA Slim Concealed Ceiling Unit FXDQ20P FXDQ40NA FXDQ25P FXDQ50NA FXDQ32P FXDQ63NA with Drai...

Page 15: ...P 28P REYQ8P 10P 12P 14P 16P 8 10 12 14 16 HP 22 4 40 0 45 0 kW 26 28 HP 73 0 78 5 kW REYQ30P 32P REYQ34P 36P 38P 40P 30 32 HP 85 0 90 0 kW 42 44 HP 118 124 kW 46 48 HP 130 135 kW REYQ18P 20P 22P 24P 18 20 22 24 HP 50 4 67 0 kW REYQ42P 44P REYQ46P 48P 34 36 38 40 HP 95 4 112 kW ...

Page 16: ...it is required System Capacity Number of units Single Unit Outdoor Unit Multi Connection Piping Kit Option 8 10 12 14 16 8HP 1 10HP 1 12HP 1 14HP 1 16HP 1 System Capacity Number of units Multi Unit Module Outdoor Unit Multi Connection Piping Kit Option 8 10 12 14 16 18HP 2 Heat Recovery BHFP26P90 20HP 2 22HP 2 24HP 2 26HP 2 28HP 2 30HP 2 32HP 2 34HP 3 Heat Recovery BHFP26P136 36HP 3 38HP 3 40HP 3 ...

Page 17: ...32P REYQ34P Outdoor unit 1 REMQ10P REMQ12P REMQ10P REMQ12P REMQ14P REMQ16P REMQ8P Outdoor unit 2 REMQ12P REMQ12P REMQ16P REMQ16P REMQ16P REMQ16P REMQ10P Outdoor unit 3 REMQ16P Total number of connectable indoor units 35 39 42 45 48 52 55 Total capacity of connectable indoor units kW 27 5 71 5 30 0 78 0 32 5 84 5 35 0 91 0 37 5 97 5 40 0 104 0 42 5 110 5 HP 36HP 38HP 40HP 42HP 44HP 46HP 48HP System...

Page 18: ...y Blow Ceiling Mounted Cassette FXZQ 20M 25M 32M 40M 50M V1 2 Way Blow Ceiling Mounted Cassette FXCQ 20M 25M 32M 40M 50M 63M 80M 125M V3 Ceiling Mounted Corner Cassette FXKQ 25MA 32MA 40MA 63MA VE Slim Concealed Ceiling Unit FXDQ PVE 20P 25P 32P FXDQ NAVE 40NA 50NA 63NA Concealed Ceiling Unit Small FXDQ 20M 25M V3 Concealed Ceiling Unit FXSQ 20M 25M 32M 40M 50M 63M 80M 100M 125M Concealed Ceiling ...

Page 19: ...Equalizer oil pipe for multi outdoor unit system z NONE z YES Procedure for calculating refrigerant refilling quantity z Refilling quantity due to piping length Adjustment quantity according to models of outdoor units z Refilling quantity due to piping length Adjustment quantity according to models of outdoor units Optional accessories Branch pipe for outdoor unit connection z Y branch Type BHFP26...

Page 20: ...SiBE37 701 Specifications 9 Part 2 Specifications 1 Specifications 10 1 1 Outdoor Units 10 1 2 Indoor Units 21 1 3 BS Units 54 ...

Page 21: ...oft Start Fan Type Propellor Fan Propellor Fan Motor Output kW 0 35 2 0 35 2 Air Flow Rate I s 3 166 3 166 m min 190 190 Drive Direct Drive Direct Drive Connecting Pipes Liquid Pipe φ9 5 C1220T Brazing Connection φ9 5 C1220T Brazing Connection Suction Gas Pipe φ19 1 C1220T Brazing Connection φ22 2 C1220T Brazing Connection High and Low Pressure Gas Pipe φ15 9 C1220T Brazing Connection φ19 1 C1220T...

Page 22: ...ing Method Soft Start Soft Start Fan Type Propellor Fan Propellor Fan Motor Output kW 0 35 2 0 75 2 Air Flow Rate I s 3 500 3 916 m min 210 235 Drive Direct Drive Direct Drive Connecting Pipes Liquid Pipe φ12 7 C1220T Brazing Connection φ12 7 C1220T Brazing Connection Suction Gas Pipe φ28 6 C1220T Brazing Connection φ28 6 C1220T Brazing Connection High and Low Pressure Gas Pipe φ19 1 C1220T Brazin...

Page 23: ...isplacement m h 16 90 16 90 Number of Revolutions r p m 7980 7980 Motor Output Number of Units kW 4 4 4 4 Starting Method Soft Start Fan Type Propellor Fan Motor Output kW 0 75 2 Air Flow Rate I s 4 000 m min 240 Drive Direct Drive Connecting Pipes Liquid Pipe φ12 7 C1220T Brazing Connection Suction Gas Pipe φ28 6 C1220T Brazing Connection High and Low Pressure Gas Pipe φ22 2 C1220T Brazing Connec...

Page 24: ...1 3 5 4 5 1 4 7 1 Starting Method Soft start Soft start Fan Type Propellor fan Propellor fan Motor Output kW 0 75 1 0 75 1 0 75 1 0 75 1 Air Flow Rate I s 3 000 3 083 3 000 3 333 m min 180 185 180 200 Drive Direct drive Direct drive Connecting Pipes Liquid Pipe φ15 9 C1220T Brazing connection φ15 9 C1220T Brazing connection Suction Gas Pipe φ28 6 C1220T Brazing connection φ28 6 C1220T Brazing conn...

Page 25: ... 5 1 3 5 4 5 2 Starting Method Soft start Soft start Fan Type Propellor fan Propellor fan Motor Output kW 0 75 1 0 75 1 0 75 2 Air Flow Rate I s 3 083 3 333 3 333 3 333 m min 185 200 200 200 Drive Direct drive Direct drive Connecting Pipes Liquid Pipe φ15 9 C1220T Brazing connection φ15 9 C1220T Brazing connection Suction Gas Pipe φ28 6 C1220T Brazing connection φ34 9 C1220T Brazing connection Hig...

Page 26: ... 3 2 4 5 4 5 1 2 2 4 5 1 3 2 4 5 4 5 1 3 5 4 5 1 Starting Method Soft start Soft start Fan Type Propellor fan Propellor fan Motor Output kW 0 75 1 0 35 2 0 75 1 0 35 2 Air Flow Rate I s 3 083 3 833 3 333 3 833 m min 185 230 200 230 Drive Direct drive Direct drive Connecting Pipes Liquid Pipe φ19 1 C1220T Brazing connection φ19 1 C1220T Brazing connection Suction Gas Pipe φ34 9 C1220T Brazing conne...

Page 27: ...1 1 9 4 5 4 5 1 3 2 4 5 4 5 2 Starting Method Soft start Soft start Fan Type Propellor fan Propellor fan Motor Output kW 0 35 2 0 35 2 0 35 2 2 Air Flow Rate I s 3 833 3 833 3 833 3 833 m min 230 230 230 230 Drive Direct drive Direct drive Connecting Pipes Liquid Pipe φ19 1 C1220T Brazing connection φ19 1 C1220T Brazing connection Suction Gas Pipe φ34 9 C1220T Brazing connection φ34 9 C1220T Brazi...

Page 28: ...kW 3 2 4 5 4 5 1 2 2 4 5 1 4 7 1 3 2 4 5 4 5 1 3 5 4 5 1 4 7 1 Starting Method Soft start Soft start Fan Type Propellor fan Propellor fan Motor Output kW 0 75 1 0 75 1 0 35 2 0 75 1 0 75 1 0 35 2 Air Flow Rate I s 3 000 3 083 3 833 3 000 3 333 3 833 m min 180 185 230 180 200 230 Drive Direct drive Direct drive Connecting Pipes Liquid Pipe φ19 1 C1220T Brazing connection φ19 1 C1220T Brazing connec...

Page 29: ...W 3 2 4 5 4 5 1 3 5 4 5 1 2 2 4 5 1 3 2 4 5 4 5 1 3 5 4 5 2 Starting Method Soft start Soft start Fan Type Propellor fan Propellor fan Motor Output kW 0 75 1 0 75 1 0 35 2 0 75 2 0 35 2 Air Flow Rate I s 3 083 3 333 3 833 3 333 3 333 3 833 m min 185 200 230 200 200 230 Drive Direct drive Direct drive Connecting Pipes Liquid Pipe φ19 1 C1220T Brazing connection φ19 1 C1220T Brazing connection Sucti...

Page 30: ...Units kW 3 2 4 5 4 5 1 2 2 4 5 1 3 2 4 5 4 5 2 3 5 4 5 1 Starting Method Soft start Soft start Fan Type Propellor fan Propellor fan Motor Output kW 0 75 1 0 35 2 2 0 75 1 0 35 2 2 Air Flow Rate I s 3 083 3 833 3 833 3 333 3 833 3 833 m min 185 230 230 200 230 230 Drive Direct drive Direct drive Connecting Pipes Liquid Pipe φ19 1 C1220T Brazing connection φ19 1 C1220T Brazing connection Suction Gas...

Page 31: ...5 4 5 2 1 9 4 5 4 5 1 3 2 4 5 4 5 3 Starting Method Soft start Soft start Fan Type Propellor fan Propellor fan Motor Output kW 0 35 2 0 35 2 2 0 35 2 3 Air Flow Rate I s 3 833 3 833 3 833 3 833 3 833 3 833 m min 230 230 230 230 230 230 Drive Direct drive Direct drive Connecting Pipes Liquid Pipe φ19 1 C1220T Brazing connection φ19 1 C1220T Brazing connection Suction Gas Pipe φ41 3 C1220T Brazing c...

Page 32: ... Empty Tubeplate Hole 4 4 Fin Fin type Cross fin coil Multi louver fins and Hi XSS tubes Fan Type Turbo fan Quantity 1 1 1 1 1 Air Flow Rate Cooling High m min 12 5 12 5 12 5 13 5 15 5 Low m min 9 0 9 0 9 0 9 0 10 0 Heating High m min 12 5 12 5 12 5 13 5 15 0 Low m min 9 0 9 0 9 0 9 0 9 5 Fan Motor Model QTS48D11M Steps 2 2 2 2 2 Output high W 56 56 56 56 56 Refrigerant Name R 410A Sound Level Coo...

Page 33: ...00PVEB FXFQ125PVEB Capacity Cooling kW 7 1 9 0 11 2 14 0 Heating kW 8 0 10 0 12 5 16 0 Power Input Cooling kW 0 095 0 120 0 173 0 258 Heating kW 0 114 0 108 0 176 0 246 Casing Material Galvanised steel Dimensions Packing Height mm 220 262 262 304 Width mm 882 882 882 882 Depth mm 882 882 882 882 Unit Height mm 204 246 246 288 Width mm 840 840 840 840 Depth mm 840 840 840 840 Weight Unit kg 21 0 24...

Page 34: ... mold resistance Standard Accessories Standard Accessories Installation and operation manual Drain hose Washer for hanging bracket Screws Sealing Pads Insulation for fitting Clamp for drain hose Installation guide Drain sealing pad Notes The sound pressure values are mentioned for a unit installed with rear suction The sound power level is an absolute value indicating the power wich a sound source...

Page 35: ... FLA MFA 4 FLA next lower standard fuse rating minimum 16A select wire size based on the MCA instead of a fuse use a circuit breaker 1 2 ELECTRICAL SPECIFICATIONS FXFQ63PVEB FXFQ80PVEB FXFQ100PVEB FXFQ125PVEB Power Supply Name VE Frequency Hz 50 60 Voltage V 220 240 220 Current Minimum circuit amps MCA A 0 9 0 9 1 4 1 9 Maximum fuse amps MFA A 16 16 16 16 Full load amps FLA A 0 7 0 7 1 1 1 5 Volta...

Page 36: ...high W 55 55 55 55 55 Drive Direct drive Refrigerant Name R 410A Sound Level Cooling Sound power nominal dBA 47 0 47 0 49 0 53 0 58 0 Cooling Sound Pressure High dBA 30 0 30 0 32 0 36 0 41 0 Low dBA 25 0 25 0 26 0 28 0 33 0 Piping connections Liquid OD Type Flare connection Diameter mm 6 4 6 4 6 4 6 4 6 4 Gas Type Flare connection Diameter mm 12 7 12 7 12 7 12 7 12 7 Drain Diameter mm 26 26 26 26 ...

Page 37: ...MV1B Power Supply Name V1 Phase 1 1 1 1 1 Frequency Hz 50 50 50 50 50 Voltage V 220 240 Current Minimum circuit amps MCA A 0 80 0 80 0 80 0 80 0 90 Maximum fuse amps MFA A 15 00 15 00 15 00 15 00 15 00 Full load amps FLA A 0 60 0 60 0 60 0 60 0 70 Voltage range Minimum V 10 Maximum V 10 Notes Voltage range units are suitable for use on electrical systems where voltage supplied to unit terminals is...

Page 38: ...Tube type Hi XSS 7 Fin Fin type Symmetric waffle louvre Treatment Hydrophilic Fan Type Sirocco fan Quantity 1 1 1 2 2 Air Flow Rate Cooling High m min 7 0 9 0 9 0 12 0 12 0 Low m min 5 0 6 5 6 5 9 0 9 0 Heating High m min 7 0 9 0 9 0 12 0 12 0 Low m min 5 0 6 5 6 5 9 0 9 0 Fan Motor Quantity 1 1 1 1 1 Steps Phase cut control Output high W 10 15 15 20 20 Drive Direct drive Refrigerant Name R 410A S...

Page 39: ... Washer for hanging bracket Quantity 8 8 8 8 8 Standard Accessories Clamps Quantity 1 1 1 1 1 Standard Accessories Installation and operation manual Quantity 1 1 1 1 1 Standard Accessories Paper pattern for installation Quantity 1 1 1 1 1 Standard Accessories Insulation for fitting Quantity 2 2 2 2 2 Standard Accessories Drain hose Quantity 1 1 1 1 1 Notes Nominal cooling capacities are based on i...

Page 40: ...ype Hi XSS 7 Fin Fin type Symmetric waffle louvre Treatment Hydrophilic Fan Type Sirocco fan Quantily 2 3 3 Air Flow Rate Cooling High m min 16 5 26 0 33 0 Low m min 13 0 21 0 25 0 Heating High m min 16 5 26 0 33 0 Low m min 13 0 21 0 25 0 Fan Motor Quantity 1 1 1 Steps Phase cut control Output high W 30 50 85 Drive Direct drive Refrigerant Name R 410A Sound Level Cooling Sound power nominal dBA 5...

Page 41: ...ccessories Washer for hanging bracket Quantity 8 8 8 Standard Accessories Clamps Quantity 1 1 1 Standard Accessories Installation and operation manual Quantity 1 1 1 Standard Accessories Paper pattern for installation Quantity 1 1 1 Standard Accessories Insulation for fitting Quantity 2 2 2 Standard Accessories Drain hose Quantity 1 1 1 Notes Nominal cooling capacities are based on indoor temperat...

Page 42: ... For more details concerning conditional connections see http extranet daikineurope com select E Data Books Finally click on the document title of your choice 1 2 ELECTRICAL SPECIFICATIONS FXCQ63MV3B FXCQ80MV3B FXCQ125MV3B Power Supply Name V3 Phase 1 1 1 Frequency Hz 50 50 50 Voltage V 230 230 230 Current Minimum circuit amps MCA A 0 90 1 10 1 30 Maximum fuse amps MFA A 16 00 16 00 16 00 Full loa...

Page 43: ... Direct drive Refrigerant Name R 410A Cooling Sound Pressure High dBA 38 0 38 0 40 0 42 0 Low dBA 33 0 33 0 34 0 37 0 Piping connections Liquid OD Type Flare connection Diameter mm 6 4 6 4 6 4 9 5 Gas Type Flare connection Diameter mm 12 7 12 7 12 7 15 9 Drain Diameter mm 32 32 32 32 Heat Insulation Foamed Polyethylene Decoration Panel Model BYK45FJW1 BYK45FJW1 BYK45FJW1 BYK71FJW1 Colour White Dim...

Page 44: ...AVE FXKQ40MAVE FXKQ63MAVE Power Supply Name VE Phase 1 1 1 1 Frequency Hz 50 50 50 50 Voltage V 220 240 Current Minimum circuit amps MCA A 0 30 0 30 0 30 0 50 Maximum fuse amps MFA A 15 00 15 00 15 00 15 00 Full load amps FLA A 0 20 0 20 0 20 0 40 Voltage range Minimum V 10 Maximum V 10 Notes Voltage range units are suitable for use on electrical systems where voltage supplied to unit terminals is...

Page 45: ... dBA 29 0 29 0 29 0 30 0 31 0 32 0 Piping connections Liquid OD Type Flare connection Diameter mm 6 4 6 4 6 4 6 4 6 4 9 5 Gas Type Flare connection Diameter mm 12 7 12 7 12 7 12 7 12 7 15 9 Drain Diameter mm VP20 I D 20 O D 26 Air Filter Removable washable Mildew proof Refrigerant control Electronic expansion valve Temperature control Microprocessor thermostat for cooling and heating Safety device...

Page 46: ...d amps FLA A 0 60 0 60 0 60 0 80 0 80 0 90 Voltage range Minimum V 10 Maximum V 10 Notes Voltage range units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above listed range limits Maximum allowable voltage range variation between phases is 2 MCA MFA MCA 1 25 FLA MFA 4 FLA next lower standard fuse rating minimum 15A select wire size based on th...

Page 47: ... 7 Fin Fin type Symmetric waffle louvre Treatment Hydrophilic Fan Type Sirocco fan Quantity 1 1 Air Flow Rate Cooling High m min 6 70 7 40 Low m min 5 20 5 80 Heating High m min 6 70 7 40 Low m min 5 20 5 80 Fan Motor Quantity 1 1 Steps step motor Output high W 10 10 Drive Direct drive Refrigerant Name R 410A Sound Level Cooling Sound power nominal dBA 50 0 50 0 Cooling Sound Pressure High dBA 37 ...

Page 48: ... 2 ELECTRICAL SPECIFICATIONS FXDQ20MV3B FXDQ25MV3B Power Supply Name V1 Phase 1 1 Frequency Hz 50 50 Voltage V 230 230 Current Minimum circuit amps MCA A 0 20 0 20 Maximum fuse amps MFA A 16 00 16 00 Full load amps FLA A 0 10 0 10 Voltage range Minimum V 10 Maximum V 10 Power Supply Intake Both indoor and outdoor unit Notes Voltage range units are suitable for use on electrical systems where volta...

Page 49: ...f Stages 14 14 14 14 14 Empty Tubeplate Hole 14 Tube type Hi XSS 7 Fin Fin type Symmetric waffle louvre Treatment Hydrophilic Fan Type Sirocco fan Quantity 1 1 1 1 1 Air Flow Rate Cooling High m min 9 00 9 00 9 50 11 50 15 00 Low m min 6 50 6 50 7 00 9 00 11 00 Heating High m min 9 00 9 00 9 50 11 50 15 00 Low m min 6 50 6 50 7 00 9 00 11 00 Fan External static pressure High Pa 125 125 104 116 136...

Page 50: ...fitting Quantity 2 2 2 2 2 Standard Accessories Washer for hanger bracket Quantity 8 8 8 8 8 Standard Accessories Screws for duct flanges Quantity 6 6 6 8 8 Standard Accessories Screws for fixing the paper pattern for installation Quantity 6 6 6 6 6 Standard Accessories Fuse Installation and operation manual Quantity 1 1 1 1 1 Notes Nominal cooling capacities are based on indoor temperature 27 CDB...

Page 51: ... 221 0 338 0 338 0 338 Nr of Stages 14 14 14 14 Tube type Hi XSS 7 Fin Fin type Symmetric waffle louvre Treatment Hydrophilic Fan Type Sirocco fan Quantity 2 3 3 3 Air Flow Rate Cooling High m min 21 00 27 00 28 00 38 00 Low m min 15 50 20 00 20 50 28 00 Heating High m min 21 00 27 00 28 00 38 00 Low m min 15 50 20 00 20 50 28 00 Fan External static pressure High Pa 123 141 141 109 Standard Pa 111...

Page 52: ... Insulation for fitting Quantity 2 2 2 2 Standard Accessories Washer for hanger bracket Quantity 8 8 8 8 Standard Accessories Screws for duct flanges Quantity 12 16 16 16 Standard Accessories Screws for fixing the paper pattern for installation Quantity 6 6 6 6 Standard Accessories Fuse Installation and operation manual Quantity 1 1 1 1 Notes Nominal cooling capacities are based on indoor temperat...

Page 53: ...oncerning conditional connections see http extranet daikineurope com select E Data Books Finally click on the document title of your choice 1 2 ELECTRICAL SPECIFICATIONS FXSQ63MV3B FXSQ80MV3B FXSQ100MV3B FXSQ125MV3B Power Supply Name V3 Phase 1 1 1 1 Frequency Hz 50 50 50 50 Voltage V 230 230 230 230 Current Minimum circuit amps MCA A 1 10 1 40 1 50 2 00 Maximum fuse amps MFA A 16 00 16 00 16 00 1...

Page 54: ...iping connections Liquid OD Type Flare connection Diameter mm 6 4 6 4 9 5 9 5 Gas Type Flare connection Diameter mm 12 7 12 7 15 9 15 9 Drain Diameter mm 32 32 32 32 Heat Insulation Glass fiber Refrigerant control Electronic expansion valve Temperature control Microprocessor thermostat for cooling and heating Safety devices PC board fuse Fan motor thermal protector Standard Accessories Standard Ac...

Page 55: ... Diameter mm 9 5 9 5 9 5 9 5 Gas Type Flare connection Flare connection Braze connection Braze connection Diameter mm 15 9 15 9 19 1 22 2 Drain Diameter mm 32 32 PS1B PS1B Heat Insulation Glass fiber Refrigerant control Electronic expansion valve Temperature control Microprocessor thermostat for cooling and heating Safety devices PC board fuse Fan motor thermal protector Standard Accessories Stand...

Page 56: ...al connections see http extranet daikineurope com select E Data Books Finally click on the document title of your choice 1 2 ELECTRICAL SPECIFICATIONS FXMQ100MAVE FXMQ125MAVE FXMQ200MAVE FXMQ250MAVE Power Supply Name VE Phase 1 1 1 1 Frequency Hz 50 50 50 50 Voltage V 220 240 Current Minimum circuit amps MCA A 2 50 3 80 8 10 9 00 Maximum fuse amps MFA A 15 00 15 00 15 00 15 00 Full load amps FLA A...

Page 57: ...gh dBA 36 0 39 0 45 0 Low dBA 31 0 34 0 37 0 Piping connections Liquid OD Type Flare connection Diameter mm 6 4 9 5 9 5 Gas Type Flare connection Diameter mm 12 7 15 9 15 9 Drain Diameter mm 26 26 26 Heat Insulation Glass wool Air Filter Resin net with mold resistance Refrigerant control Electronic expansion valve Temperature control Microprocessor thermostat for cooling and heating Safety devices...

Page 58: ...0 Maximum V 10 Notes Voltage range units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above listed range limits Maximum allowable voltage range variation between phases is 2 MCA MFA MCA 1 25 FLA MFA 4 FLA next lower standard fuse rating minimum 15A select wire size based on the MCA instead of a fuse use a circuit breaker For more details conce...

Page 59: ...686M QCL9686M Output high W 40 40 40 43 43 43 Drive Direct drive Refrigerant Name R 410A Cooling Sound Pressure High dBA 35 0 36 0 37 0 39 0 42 0 46 0 Low dBA 29 0 29 0 29 0 34 0 36 0 39 0 Piping connections Liquid OD Type Flare connection Diameter mm 6 4 6 4 6 4 6 4 6 35 9 5 Gas Type Flare connection Diameter mm 12 7 12 7 12 7 12 7 12 7 15 9 Drain Diameter mm 18 18 18 18 18 18 Heat Insulation Foa...

Page 60: ...A 0 20 0 30 0 30 0 30 0 30 0 50 Voltage range Minimun V 10 Maximum V 10 Notes Voltage range units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above listed range limits Maximum allowable voltage range variation between phases is 2 MCA MFA MCA 1 25 FLA MFA 4 FLA next lower standard fuse rating minimum 15A select wire size based on the MCA inste...

Page 61: ...5 25 25 35 35 Drive Direct drive Refrigerant Name R 410A Cooling Sound Pressure High dBA 35 0 35 0 35 0 38 0 39 0 40 0 Low dBA 32 0 32 0 32 0 33 0 34 0 35 0 Piping connections Liquid OD Type Flare connection Diameter mm 6 4 6 4 6 4 6 4 6 4 9 5 Gas Type Flare connection Diameter mm 12 7 12 7 12 7 12 7 12 7 15 9 Drain Diameter mm O D 21 Heat Insulation Glass Fiber Urethane Foam Air Filter Resin net ...

Page 62: ... A 0 20 0 20 0 50 0 50 0 50 0 50 Voltage range Minimum V 10 Maximum V 10 Notes Voltage range units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above listed range limits Maximum allowable voltage range variation between phases is 2 MCA MFA MCA 1 25 FLA MFA 4 FLA next lower standard fuse rating minimum 15A select wire size based on the MCA inst...

Page 63: ...5 15 25 25 35 35 Drive Direct drive Refrigerant Name R 410A Cooling Sound Pressure High dBA 35 0 35 0 35 0 38 0 39 0 40 0 Low dBA 32 0 32 0 32 0 33 0 34 0 35 0 Piping connections Liquid OD Type Flare connection Diameter mm 6 4 6 4 6 4 6 4 6 4 9 5 Gas Type Flare connection Diameter mm 12 7 12 7 12 7 12 7 12 7 15 9 Drain Diameter mm O D 21 Heat Insulation Glass Fiber Urethane Foam Air Filter Resin n...

Page 64: ...s FLA A 0 20 0 20 0 50 0 50 0 50 0 50 Voltage range Minimum V 10 Maximum V 10 Notes Voltage range units are suitable for use on electrical systems where voltage supplied to unit terminals is not below or above listed range limits Maximum allowable voltage range variation between phases is 2 MCA MFA MCA 1 25 FLA MFA 4 FLA next lower standard fuse rating minimum 15A select wire size based on the MCA...

Page 65: ...5mm C1220T brazing connection 1 9 5mm C1220T brazing connection 9 5mm C1220T brazing connection Gas Pipes 15 9mm C1220T brazing connection 1 15 9mm C1220T brazing connection 2 22 2mm C1220T brazing connection 3 Outdoor Unit Liquid Pipes 9 5mm C1220T brazing connection 9 5mm C1220T brazing connection 9 5mm C1220T brazing connection Suction Gas Pipes 15 9mm C1220T brazing connection 15 9mm C1220T br...

Page 66: ...4P 16P 58 1 3 REMQ8P Multi 8HP 60 1 4 REMQ10P 12P Multi 10 12HP 62 1 5 REMQ14P 16P Multi 14 16HP 64 1 6 BS Unit Functional Parts 66 1 7 Indoor Units 67 2 Functional Parts Layout 68 2 1 REYQ8P 10P 12P 68 2 2 REYQ14P 16P 69 2 3 REMQ8P 70 2 4 REMQ10P 12P 71 2 5 REMQ14P 16P 72 3 Refrigerant Flow for Each Operation Mode 73 ...

Page 67: ...hen pressure increases to stop operation and avoid high pressure increase in the fault operation 23 S2PH HP pressure switch For STD 24 Pressure regulating valve Liquid pipe This is used when pressure increases to prevent any damage on components caused by pressure increase in transport or storage 25 Pressure regulating valve Refrigerant regulator This is used when pressure increases to prevent any...

Page 68: ... Pipe Dual Pressure Gas Pipe Liquid Pipe Subcool Heat Exchanger 2 Subcool Heat Exchanger 1 Heat Exchanger 2 Heat Exchanger 1 STD S2PH Stop Valve Stop Valve Stop Valve Gauge Port Left Gauge Port 19 18 46 48 50 26 45 47 23 34 29 42 40 24 26 38 36 39 35 37 25 27 30 22 33 28 31 32 S1NPH S2NPL 8 11 6 4 2 9 20 17 7 10 5 3 13 12 1 21 15 14 16 ...

Page 69: ... increases to stop operation and avoid high pressure increase in the fault operation 24 Pressure regulating valve Liquid pipe This is used when pressure increases to prevent any damage on components caused by pressure increase in transport or storage 25 Pressure regulating valve Refrigerant regulator This is used when pressure increases to prevent any damage on components caused by pressure increa...

Page 70: ...uction Pipe Stop Valve Stop Valve Stop Valve Gauge Port 50 26 48 8 45 46 18 19 23 33 28 2 41 40 26 39 37 10 35 36 20 12 22 31 3 7 38 17 5 13 25 27 30 16 32 1 21 29 14 15 28 24 9 47 6 4 11 Liquid Pipe INV1 INV2 Right Left S2PH S1NPH S2NPL S1PH Gauge Port Subcool Heat Exchanger 2 Heat Exchanger 2 Subcool Heat Exchanger 1 Heat Exchanger 1 ...

Page 71: ...ssure increase in the fault operation 22 Pressure regulating valve Liquid pipe This is used when pressure increases to prevent any damage on components caused by pressure increase in transport or storage 23 Pressure regulating valve Refrigerant regulator This is used when pressure increases to prevent any damage on components caused by pressure increase in transport or storage 24 Subcooling heat e...

Page 72: ...Circuit 61 REMQ8P S1NPH INV S1PH 7 S2NPL Stop Valve Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve Suction Pipe Gauge Port 22 15 36 35 37 23 11 38 24 39 4 17 10 16 8 31 26 19 18 32 1 14 13 12 25 29 30 6 40 9 ...

Page 73: ...ressure increase in the fault operation 20 S2PH HP pressure switch For STD compressor 1 22 Pressure regulating valve Liquid pipe This is used when pressure increases to prevent any damage on components caused by pressure increase in transport or storage 23 Pressure regulating valve Refrigerant regulator This is used when pressure increases to prevent any damage on components caused by pressure inc...

Page 74: ...EMQ10P 12P 40 7 9 6 Stop Valve Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve Suction Pipe Gauge Port 22 15 36 35 37 23 11 38 24 39 4 10 17 16 8 31 26 19 20 18 32 33 14 1 2 27 13 12 25 29 30 INV S1 S1NPH S1PH S2PH S2NPL ...

Page 75: ...e fault operation 20 S2PH HP pressure switch For STD compressor 1 21 S3PH HP pressure switch For STD compressor 2 22 Pressure regulating valve Liquid pipe This is used when pressure increases to prevent any damage on components caused by pressure increase in transport or storage 23 Pressure regulating valve Refrigerant regulator This is used when pressure increases to prevent any damage on compone...

Page 76: ...P 40 22 17 10 16 19 32 1 2 3 13 12 25 11 23 34 33 20 30 4 9 6 7 24 38 39 5 15 35 37 21 26 27 28 29 8 31 18 36 Stop Valve Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve Suction Pipe S2 INV S1 S1NPH S1PH S2PH S3PH S2NPL Gauge Port ...

Page 77: ...alve EVHS Y2E Opens while in heating operation or all indoor units are in cooling operation Max 480pls 4 Electronic expansion valve EVLS Y3E Opens while in cooling operation Max 480pls 5 Electronic expansion valve EVSC Y1E In simultaneous cooling and heating operation it is used to subcool liquid refrigerants when an indoor unit downstream of this BS unit is in heating operation Max 480pls 6 Capil...

Page 78: ...ated degree of gas when cooling and subcooled degree when heating Max 2000 pls Suction air thermistor R1T Used for thermostat control Liquid pipe thermistor R2T Used to control superheated degree of gas when cooling and subcooled degree when heating Gas pipe thermistor R3T Used for gas superheated degree control when cooling Gas side Piping Liquid side Piping Fan Filter Filter Electronic Expansion...

Page 79: ...1 68 Refrigerant Circuit 2 Functional Parts Layout 2 1 REYQ8P 10P 12P Plan Front View Note For reference numbers refer to page 56 19 18 11 23 10 17 34 33 12 22 16 13 14 15 4 36 46 47 48 42 45 6 8 9 2 40 7 3 5 38 20 21 31 32 37 39 1 35 ...

Page 80: ...nal Parts Layout Refrigerant Circuit 69 2 2 REYQ14P 16P Plan Front View Note For reference numbers refer to page 58 19 18 11 23 10 17 33 32 22 12 16 15 13 14 36 46 47 48 41 45 4 9 6 8 2 35 1 31 39 37 30 21 20 38 5 3 7 40 ...

Page 81: ... Parts Layout SiBE37 701 70 Refrigerant Circuit 2 3 REMQ8P Plan Front View Note For reference numbers refer to page 60 REFRIGERANT REGULATOR 11 7 9 25 19 32 31 10 8 18 40 38 16 15 36 37 39 35 12 13 4 6 17 30 14 1 ...

Page 82: ...ional Parts Layout Refrigerant Circuit 71 2 4 REMQ10P 12P Plan Front View Note For reference number refer to page 62 REFRIGERANT REGULATOR 11 7 9 25 20 19 33 31 31 10 8 18 40 38 16 15 36 37 39 35 12 13 4 6 17 30 14 2 1 ...

Page 83: ...out SiBE37 701 72 Refrigerant Circuit 2 5 REMQ14P 16P Plan Front View Note For reference number refer to page 64 REFRIGERANT REGULATOR 11 7 9 25 19 20 21 34 33 32 8 18 40 38 31 10 2 3 30 17 4 5 6 16 36 37 39 35 12 13 15 1 ...

Page 84: ...Suction Pipe Liquid Pipe Equalizing Pipe Refrigerant Regulator Equalizing Pipe Stop Valve Stop Valve Stop Valve Left Right One Body Type High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure EVH EVL EVHS EVLS EVSC EVH EVL EVHS EVLS EVSC Indoor Unit Cooling Unit Thermostat ON Thermostat OFF Cooling Unit EVH EVL EVHS EVLS EVSC Cooling Unit Suction Pipe...

Page 85: ...pe BS Unit Suction Pipe Fan OFF Indoor unit Operation Fan ON ON Fan LL ON 192pls 192pls OFF S1NPH S2NPL HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf Ta STD INV High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Stop Valve Stop Valve Stop Valve Left Right One Body Type Suc...

Page 86: ...ure Gas Pipe Liquid Pipe BS Unit Suction Pipe 192pls S1NPH S2NPL INV HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ STD HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf Ta High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Stop Valve Stop Valve Stop Valve Left Right One Body Type Suction Pipe Liquid Pipe Equalizing Pipe R...

Page 87: ...Liquid Pipe BS Unit Suction Pipe S1NPH S2NPL HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf Ta STD INV High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Stop Valve Stop Valve Stop Valve Left Right One Body Type Suction Pipe Liquid Pipe Equalizing Pipe Refrigerant Regulator...

Page 88: ...S EVSC Indoor Unit Heating Unit BS Unit Suction Pipe Fan LL ON S1NPH INV HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf Ta S2NPL STD High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Stop Valve Stop Valve Stop Valve Left Right One Body Type Suction Pipe Liquid Pipe Equaliz...

Page 89: ... Suction Pipe EVH EVL EVHS EVLS EVSC Heating Unit S1NPH S2NPL INV HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf Ta STD High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Stop Valve Stop Valve Stop Valve Left Right One Body Type Suction Pipe Liquid Pipe Equalizing Pipe Refr...

Page 90: ...sure Gas Pipe Liquid Pipe Liquid Pipe BS Unit BS Unit Suction Pipe Suction Pipe 0pls 160pls S1NPH S2NPL HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf Ta STD INV Stop Valve High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Stop Valve Stop Valve Left Right One Body Type Suc...

Page 91: ...l Pressure Gas Pipe Liquid Pipe Liquid Pipe BS Unit BS Unit Suction Pipe Suction Pipe 160pls 0pls S1NPH INV HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ STD HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf Ta S2NPL High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Stop Valve Stop Valve Left Right One Body Type Suction ...

Page 92: ...ipe Liquid Pipe BS Unit Suction Pipe Fan OFF Indoor unit Operation Fan ON ON Fan ON ON OFF INV HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ INV HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf Ta S1NPH S2NPL High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Stop Valve Stop Valve Stop Valve Left Right One Body Type Suct...

Page 93: ...ressure Gas Pipe BS Unit BS Unit Suction Pipe Suction Pipe INV HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ INV HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf Ta S1NPH S2NPL High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Liquid Pipe Stop Valve Stop Valve Stop Valve Left Right One Body Type Suction Pipe Liquid Pipe...

Page 94: ...ure Gas Pipe Liquid Pipe BS Unit Suction Pipe 192pls S1NPH S2NPL INV HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ INV HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf Ta High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Stop Valve Stop Valve Stop Valve Left Right One Body Type Suction Pipe Liquid Pipe Equalizing Pipe R...

Page 95: ...Liquid Pipe BS Unit Suction Pipe Fan OFF Indoor unit Operation Fan ON ON Fan ON ON 192pls OFF S1NPH S2NPL INV HPS EVM EVT 20SB Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL SVO SVG EVJ INV HPS EVM EVT Tdi Tb Tg Tsc Tsh 20SA SVE TS_A Tf Ta High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Stop Valve Stop Valve Stop Valve Left Right One Body Type S...

Page 96: ...ure gas High temperature high pressure liquid Low temperature low pressure Stop Valve Stop Valve Stop Valve Left Right One Body Type Suction Pipe Liquid Pipe Equalizing Pipe Refrigerant Regulator Equalizing Pipe EVH EVL EVHS EVLS EVSC EVH EVL EVHS EVLS EVSC Indoor Unit Heating Unit Thermostat ON Thermostat OFF Heating Unit EVH EVL EVHS EVLS EVSC Heating Unit Dual Pressure Gas Pipe Liquid Pipe BS U...

Page 97: ...erature high pressure gas High temperature high pressure liquid Low temperature low pressure Stop Valve Stop Valve Stop Valve Left Right One Body Type Suction Pipe Liquid Pipe Equalizing Pipe Refrigerant Regulator Equalizing Pipe EVH EVL EVHS EVLS EVSC EVH EVL EVHS EVLS EVSC Indoor Unit Cooling Unit Thermostat ON Thermostat ON Heating Unit EVH EVL EVHS EVLS EVSC Heating Unit Dual Pressure Gas Pipe...

Page 98: ...VL EVHS EVLS EVSC EVH EVL EVHS EVLS EVSC Indoor Unit Cooling Unit Thermostat ON Thermostat ON Heating Unit EVH EVL EVHS EVLS EVSC Heating Unit Dual Pressure Gas Pipe Liquid Pipe BS Unit Suction Pipe 0pls 160pls High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Stop Valve Stop Valve Stop Valve Left Right One Body Type Suction Pipe Liquid Pipe Equa...

Page 99: ... High temperature high pressure liquid Low temperature low pressure Stop Valve Stop Valve Stop Valve Left Right One Body Type Suction Pipe Liquid Pipe Equalizing Pipe Refrigerant Regulator Equalizing Pipe In operation of defrosting EVH EVL EVHS EVLS EVSC EVH EVL EVHS EVLS EVSC Indoor Unit Cooling Unit Thermostat ON Thermostat ON Heating Unit EVH EVL EVHS EVLS EVSC Heating Unit Dual Pressure Gas Pi...

Page 100: ... SVT SVO SVL SVG EVJ INV HPS EVM EVT Tdi Tb Tg Tsc TS_A Tsh INVFAN TL S1 HPS Tds1 20SA SVE Tf EVJ SVO SVL SVG SVP SVT S2NPL S1NPH S2NPL Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suction Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve Refrigerant Regulator Dual Pressure Gas Pipe Stop Valve High temperature...

Page 101: ...ation ON Theromstat OFF Operation ON Theromstat ON EVH EVL EVHS EVLS EVSC Heating Unit EVH EVL EVHS EVLS EVSC Heating Unit Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suction Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve Refrigerant Regulator Dual Pressure Gas Pipe Stop Valve High temperature high pressur...

Page 102: ... Theromstat ON Operation ON Theromstat ON Operation ON Theromstat OFF EVH EVL EVHS EVLS EVSC Heating Unit EVH EVL EVHS EVLS EVSC Heating Unit Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suction Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve Refrigerant Regulator Dual Pressure Gas Pipe Stop Valve High tempe...

Page 103: ... ON Theromstat OFF EVH EVL EVHS EVLS EVSC Cooling Unit EVH EVL EVHS EVLS EVSC Cooling Unit Operation ON Theromstat ON Operation OFF Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suction Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve Refrigerant Regulator Dual Pressure Gas Pipe Stop Valve High temperature hig...

Page 104: ...Valve Dual Pressure Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve Refrigerant Regulator Dual Pressure Gas Pipe Stop Valve High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Liquid Pipe Stop Valve Gauge Port REMQ8P Multi 8HP REMQ10 12P Multi 10 12HP EVH EVL EVHS EVLS EVSC BS Unit Indoor Unit...

Page 105: ...t Operation ON Theromstat ON Operation ON Theromstat OFF Operation ON Theromstat ON EVH EVL EVHS EVLS EVSC Heating Unit EVH EVL EVHS EVLS EVSC Heating Unit 224pls Liquid Pipe Stop Valve Equalizing Pipe Stop Valve Suction Pipe Stop Valve Dual Pressure Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve Refrigerant Regulator Dual Pressure Gas Pipe ...

Page 106: ...lve Dual Pressure Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve Refrigerant Regulator Dual Pressure Gas Pipe Stop Valve High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Liquid Pipe Stop Valve Gauge Port REMQ8P Multi 8HP REMQ10 12P Multi 10 12HP In operation of defrosting EVH EVL EVHS EVLS...

Page 107: ...lve Dual Pressure Gas Pipe Stop Valve Refrigerant Regulator Gauge Port Equalizing Pipe Stop Valve Suction Pipe Stop Valve Refrigerant Regulator Dual Pressure Gas Pipe Stop Valve High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Liquid Pipe Stop Valve Gauge Port REMQ8P Multi 8HP REMQ10 12P Multi 10 12HP In operation of defrosting EVH EVL EVHS EVLS...

Page 108: ...regulating valve Refrigerant regulator The circuit will be closed when SVL SVO SVG are all closed In this case the increased pressure in the refrigerant regulator will be transferred to the liquid refrigerant pipe side to regulate the pressure Suction Pipe Liquid Pipe Equalizing Pipe Refrigerant Regulator Right S1NPH S2NPL S1PH EVM EVT Tdi Tb Tg Tsc Tsh TL SVP 20SA SVE TS_A Tf SVL Pressure regulat...

Page 109: ...stem pressure Finally EVH and EVHS are opened and the electric expansion valve of the indoor unit is opened to start the operation as a heating circuit In cooling operation In equalization To heating operation BS Unit Indoor Unit Cooling Unit EVH EVL EVHS EVLS EVSC Suction Pipe Dual Pressure Gas Pipe Liquid Pipe BS Unit Indoor Unit Close EVH Close EVL Close EVHS Open EVLS Close EVSC Suction Pipe D...

Page 110: ... EVLS are opened and the electric expansion valve of the indoor unit is opened to start the operation as a cooling circuit In heating operation In equalization To cooling operation BS Unit Indoor Unit Heating Unit EVH EVL EVHS EVLS EVSC Suction Pipe Dual Pressure Gas Pipe Liquid Pipe BS Unit Indoor Unit In equalization EVH Close Close EVL Close EVHS Close EVLS Open EVSC Suction Pipe Dual Pressure ...

Page 111: ...Refrigerant Flow for Each Operation Mode SiBE37 701 100 Refrigerant Circuit ...

Page 112: ...3 7 Stopping Operation 129 4 Protection Control 130 4 1 High Pressure Protection Control 130 4 2 Low Pressure Protection Control 132 4 3 Discharge Pipe Protection Control 134 4 4 Inverter Protection Control 135 4 5 STD Compressor Overload Protection 137 5 Other Control 138 5 1 Backup Operation 138 5 2 Demand Operation 138 5 3 Heating Operation Prohibition 138 6 Outline of Control Indoor Unit 139 6...

Page 113: ...g heat exchanger Y5E Subcooling2 EVJ Y4E Y2E Electronic expansion valve at the refrigerant charge port HTDi Value of INV compressor discharge pipe temperature compensated with outdoor air temperature HTDs Value of STD compressor discharge pipe temperature compensated with outdoor air temperature Pc S1NPH S1NPH Value detected by high pressure sensor Pe S2NPL S2NPL Value detected by low pressure sen...

Page 114: ... Gas pipe1 R5T Temperature detected with the subcooling heat exchanger outlet thermistor R13T Gas pipe2 Tl R6T Liquid pipe1 R6T Liquid pipe temperature detected with the liquid pipe thermistor R14T Liquid pipe2 Tsc R9T R9T Temperature of liquid pipe between liquid shutoff valve and supercooled heat exchanger Tc High pressure equivalent saturation temperature TcS Target temperature of Tc Te Low pre...

Page 115: ...geover Malfunction Stand by Thermostat ON After completion of startup control Cooling startup Heating startup Thermostat ON Operation mode changeover No Yes Mode changeover Operation mode changeover Malfunction Stanby Indoor unit stop or thermostat OFF Malfunction Stanby Malfunction Stanby Indoor unit stop or thermostat OFF Indoor unit stop or thermostat OFF Oil return Defrost and Mode changeover ...

Page 116: ...S OFF Outdoor unit heat exchanger Condenser OFF Outdoor unit heat exchanger Evaporator ON Outdoor unit heat exchanger Condenser OFF Outdoor unit heat exchanger Evaporator ON Y9S Four way valve High low pressure gas pipe switch 20SB Y8S Y2S ON OFF OFF Solenoid valve Main bypass SVE Y5S Y6S ON OFF OFF Y10S Solenoid valve Hot gas SVP Y4S Y5S OFF OFF OFF Solenoid valve Refrigerant regulator liquid pip...

Page 117: ...pending on Te setting operating frequency etc On multi outdoor unit systems this control is made according to values of the first priority unit which is detected with the pressure sensor Te setting L M Normal factory setting H 3 6 7 8 9 10 11 Controls compressor capacity to adjust Tc to achieve target value TcS Tc High pressure equivalent saturation temperature C Te set value Make this setting whi...

Page 118: ...tes in any of Pattern 1 through Pattern 3 according to the rotation of outdoor units REYQ22P 24P Pattern 1 Pattern 2 Pattern 3 INV STD1 No 2 No 4 No 1 No 3 REYQ26P 28P INV STD1 No 1 No 3 INV STD1 STD2 No 2 No 4 No 5 No 2 No 4 No 1 No 3 No 5 REYQ18P 20P INV STD1 STD1 No 2 No 3 No 1 No 3 No 2 No 4 No 3 INV No 1 No 2 INV No 1 REYQ30P 32P INV STD1 STD2 No 2 No 4 No 6 No 1 No 3 No 5 INV STD1 STD2 No 1 ...

Page 119: ... No 3 No 6 No 9 No 2 No 5 No 8 No 1 No 4 No 7 INV STD1 STD2 No 1 No 4 No 7 No 3 No 6 No 9 No 2 No 5 No 8 INV STD1 STD2 No 2 No 5 No 8 No 1 No 4 No 7 No 3 No 6 No 9 REYQ42P 44P INV STD1 No 1 No 4 INV STD1 STD2 No 3 No 6 No 2 No 5 No 3 No 6 No 8 No 2 No 5 No 8 No 1 No 4 No 7 INV STD1 No 1 No 4 No 3 No 6 No 2 No 5 INV STD1 STD2 No 2 No 5 No 7 No 1 No 4 No 7 No 3 No 6 No 8 No 3 No 6 No 7 No 2 No 5 No ...

Page 120: ...2Hz 4 68Hz 5 74Hz 6 80Hz 7 88Hz 8 96Hz 9 104Hz 10 110Hz 11 116Hz 12 124Hz 13 132Hz 14 144Hz 15 158Hz 16 166Hz 17 176Hz 18 188Hz 19 202Hz 20 210Hz 21 52Hz ON 22 62Hz ON 23 68Hz ON 24 74Hz ON 25 80Hz ON 26 88Hz ON 27 96Hz ON 28 104Hz ON 29 116Hz ON 30 124Hz ON 31 132Hz ON 32 144Hz ON 33 158Hz ON 34 176Hz ON 35 188Hz ON 36 202Hz ON 37 210Hz ON Initial step REYQ14PY1 16PY1 STEP No INV1 INV2 1 52Hz 52H...

Page 121: ...ON 33 116Hz 116Hz ON 34 124Hz 124Hz ON 35 132Hz 132Hz ON 36 144Hz 144Hz ON 37 158Hz 158Hz ON 38 176Hz 176Hz ON 39 188Hz 188Hz ON 40 202Hz 202Hz ON 41 210Hz 210Hz ON REYQ22PY1 24PY1 10 12 12HP To increase Step No STEP No unit 1 INV unit 2 INV STD 1 52Hz 52Hz 2 56Hz 56Hz 3 62Hz 62Hz 4 66Hz 66Hz 5 70Hz 70Hz 6 74Hz 74Hz 7 80Hz 80Hz 8 88Hz 88Hz 9 92Hz 92Hz 10 96Hz 96Hz 11 104Hz 104Hz 12 110Hz 110Hz 13 ...

Page 122: ...4Hz ON3 41 92Hz 92Hz ON3 42 104Hz 104Hz ON3 43 116Hz 116Hz ON3 44 124Hz 124Hz ON3 45 144Hz 144Hz ON3 46 158Hz 158Hz ON3 47 166Hz 166Hz ON3 48 176Hz 176Hz ON3 49 188Hz 188Hz ON3 50 202Hz 202Hz ON3 51 210Hz 210Hz ON3 REYQ 30PY1 32PY1 14 16 16HP To increase Step No STEP No unit 1 INV unit 2 INV STD 1 52Hz 52Hz 2 56Hz 56Hz 3 62Hz 62Hz 4 66Hz 66Hz 5 70Hz 70Hz 6 74Hz 74Hz 7 80Hz 80Hz 8 88Hz 88Hz 9 92Hz ...

Page 123: ...6Hz 116Hz ON3 30 124Hz 124Hz 124Hz ON3 31 144Hz 144Hz 144Hz ON3 32 158Hz 158Hz 158Hz ON3 33 166Hz 166Hz 166Hz ON3 34 176Hz 176Hz 176Hz ON3 35 188Hz 188Hz 188Hz ON3 36 202Hz 202Hz 202Hz ON3 37 210Hz 210Hz 210Hz ON3 Initialstep To decrease Step No STEP No unit1 INV unit2 INV unit3 INV STD 1 52Hz 2 56Hz 3 62Hz 4 68Hz 5 74Hz 6 80Hz 7 88Hz 8 96Hz 9 104Hz 10 52Hz 52Hz 11 56Hz 56Hz 12 62Hz 62Hz 13 66Hz 6...

Page 124: ...0 12 16 16HP To increase Step No STEP No unit1 INV unit2 INV unit3 INV STD 1 52Hz 52Hz 52Hz 2 56Hz 56Hz 56Hz 3 62Hz 62Hz 62Hz 4 66Hz 66Hz 66Hz 5 68Hz 68Hz 68Hz 6 70Hz 70Hz 70Hz 7 74Hz 74Hz 74Hz 8 80Hz 80Hz 80Hz 9 88Hz 88Hz 88Hz 10 96Hz 96Hz 96Hz 11 104Hz 104Hz 104Hz 12 110Hz 110Hz 110Hz 13 116Hz 116Hz 116Hz 14 124Hz 124Hz 124Hz 15 80Hz 80Hz 80Hz ON1 16 88Hz 88Hz 88Hz ON1 17 96Hz 96Hz 96Hz ON1 18 1...

Page 125: ... changes Figures listed above are all those controlled while in standard mode which vary when the system is set to high static pressure or capacity precedence mode SH Tg Te SH Evaporator outlet superheated degree C Tg Suction pipe temperature C detected by the heat exchanger gas pipe thermistor R2T Te Low pressure equivalent saturated temperature C SH Tsh Te SH Evaporator outlet superheated degree...

Page 126: ...l using the outdoor unit fan to retain appropriate liquid pressure thus ensuring refrigerant circulation rate to be supplied to indoor units Hold the current step on outdoor unit fan 1 step on outdoor unit fan 1 step on outdoor unit fan PI control PI control Lapse of 20 sec Lapse of 20 sec Fan step 7 Pc 3 08MPa Pc 3 18MPa Fan step 8 Pc 3 28MPa Fan step 9 PI control PI control PI control ...

Page 127: ...ator Right side Evaporator Outdoor unit Left side Evaporator Right side Condenser GR 25 GR 20 GR 25 GR 20 GR 15 GR 10 GR 15 GR 10 A1 A2 Outdoor unit Note 1 GR is a numeric value representing the current balanced condition and calculated from target condensing temperature target evaporating temperature current condensing temperature and current evaporating temperature Note 2 On the system with two ...

Page 128: ...ssor 3 M3C Outdoor unit fan 1 M1F M1F STEP4 Ta 20 C OFF Ta 20 C STEP4 1step 15 sec When Pc_max 2 16 MPa 1step 15 sec When Pc_max 1 77 MPa Outdoor unit fan 2 M2F M2F Electronic expansion valve Main EVM Y1E Y3E Y1E 0 pls 1375 pls 1375 pls Electronic expansion valve Supercooling EVT Y2E Y5E Y3E 0 pls 0 pls 0 pls Electronic expansion valve Refrigerant charge EVJ Y4E Y2E 80 pls 80 pls 80 pls Four way v...

Page 129: ...onic expansion valve Refrigerant charge EVJ Y4E Y2E 80 pls 80 pls 80 pls Four way valve Heat exchanger switch 20SA Y2S Y9S Y3S When outdoor heat exchanger is evaporator ON When outdoor heat exchanger is condenser OFF When outdoor heat exchanger is evaporator ON When outdoor heat exchanger is condenser OFF When outdoor heat exchanger is evaporator ON When outdoor heat exchanger is condenser OFF Fou...

Page 130: ...ditions The system starts heating operation with thermostat ON at a high load The system completes defrosting operation The system switches the operation mode from cooling to heating or simultaneous cooling and heating operation Control 1 Start multiple INV compressors in the system at one time 2 Start multiple STD compressors in the system at intervals of 15 seconds Start up STD compressors at in...

Page 131: ...tion Operation after oil return REYQ REMQ Compressor 1 M1C M1C 52Hz ON ON Subsequently constant low pressure control Maintain the number of compressors that were used before oil return operation 52Hz ON ON Subsequently constant low pressure control Maintain the number of compressors that were used before oil return operation Compressor 2 M2C M2C Compressor 3 M3C Outdoor unit fan 1 M1F M1F Cooling ...

Page 132: ...torized valve Thermo ON unit Normal opening degree Unit not in operation 192pls Thermo OFF unit Normal opening degree for forced thermostat ON Cooling BS unit actuator Elect symbol Oil return operation Electronic expansion vale EVH Y4E 600pls Electronic expansion vale EVL Y5E 760pls Electronic expansion vale EVHS Y2E 480pls Electronic expansion vale EVLS Y3E 480pls Electronic expansion vale EVSC Y...

Page 133: ...ed for oil return operation turn ON the STD compressor every 10 seconds up to 3 units at maximum Compressor 2 M2C M2C Compressor 3 M3C Outdoor unit fan 1 M1F M1F When outdoor unit heat exchanger is condenser the fan will run under cooling fan control When outdoor unit heat exchanger is evaporator the fan will run at the fan step 7 or 8 Outdoor unit fan 2 M2F M2F Electronic expansion valve main EVM...

Page 134: ... valve Thermo ON unit Normal opening degree Unit not in operation 224 pls Thermo OFF unit Normal opening degree for forced thermostat ON Cooling BS unit actuator Elect symbol Oil return operation Electronic expansion vale EVH Y4E 0pls Electronic expansion vale EVL Y5E 760pls Electronic expansion vale EVHS Y2E 0pls 60pls when Pc_max 2 85MPa Electronic expansion vale EVLS Y3E 480pls Electronic expan...

Page 135: ...S OFF OFF Four way valve for high and low pressure gas pipe selection 20SB Y8S Y2S Holds Holds Electronic expansion valve main EVM Y1E Y3E Y1E 1375pls 0pls Electronic expansion valve subcooling EVT Y2E Y5E Y3E SH control 0pls Electronic expansion valve refilling refrigerant EVJ Y4E Y2E 80pls 80pls Solenoid valve main bypass SVE Y5S Y10S Y6S ON OFF Solenoid valve hot gas SVP Y4S Y5S OFF OFF Solenoi...

Page 136: ...igerant regulator SVG Y1S Y1S 0pls 0pls Solenoid valve drain pipe of refrigerant regulator SVO Y7S Y7S 0pls 0pls Solenoid valve discharge pipe of refrigerant regulator SVT Y6S Y8S 0pls 0pls Cooling indoor unit actuator Defrost operation Fan Thermo ON unit Remote controller setting Unit not in operation OFF Thermo OFF unit Remote controller setting Motorized valve Thermo ON unit Normal opening degr...

Page 137: ...C Compressor 3 M3C M3C Outdoor unit fan 1 M1F M1F Fan control Fan control Outdoor unit fan 2 M2F M2F Electronic expansion valve Main EVM Y1E Y3E Y1E 1375 pls 1375 pls Electronic expansion valve Supercooling EVT Y2E Y5E Y3E 0 pls 0 pls Electronic expansion valve Refrigerant charge EVJ Y4E Y2E 80 pls 80 pls Four way valve Heat exchanger switch 20SA Y2S Y9S Y3S OFF OFF Four way valve High low pressur...

Page 138: ... 0 pls Electronic expansion valve Refrigerant charge EVJ Y4E Y2E 80 pls 80 pls Four way valve Heat exchanger switch 20SA Y2S Y9S Y3S When outdoor heat exchanger is evaporator ON When outdoor heat exchanger is condenser OFF When outdoor heat exchanger is evaporator ON When outdoor heat exchanger is condenser OFF Four way valve High low pressure gas pipe switch 20SB Y8S Y2S OFF OFF Solenoid valve Ma...

Page 139: ... C OFF Ta 30 C STEP4 Ta 30 C OFF Outdoor unit fan2 MF2 MF2 Ta 30 C STEP4 Ta 30 C OFF Ta 30 C STEP4 Ta 30 C OFF Electronic expansion valve Main EVM Y1E Y3E Y1E 0 pls Electronic expansion valve Supercooling EVT Y2E Y5E Y3E 0 pls Electronic expansion valve Refrigerant charge EVJ Y4E Y2E 80 pls Four way valve Heat exchanger switch 20SA Y2S Y9S Y3S Holds Four way valve High low pressure gas pipe switch...

Page 140: ...ercooling EVT Y2E Y5E Y3E 0 pls Electronic expansion valve Refrigerant charge EVJ Y4E Y2E 80 pls Four way valve Heat exchanger switch 20SA Y2S Y9S Y3S Holds Four way valve High low pressure gas pipe switch 20SB Y8S Y2S Holds Solenoid valve Main bypass SVE Y5S Y10S Y6S OFF Solenoid valve Hot gas SVP Y4S Y5S OFF Solenoid valve Refrigerant regulator liquid pipe SVL Y3S Y4S OFF Solenoid valve Refriger...

Page 141: ...rmal Operation Pc_max 3 47MPa Pc_max 3 55MPa Pc_max 3 47MPa Pc_max 3 24MPa Pc_max 3 64MPa Upper limit compressor step max Max Step When occurring 3 times within 30 min HPS is activated without high pressure standby thus outputting the malfunction code E3 Upper limit compressor step 2 step down After 10 sec Current step maintained Upper limit compressor step 1 step up After 15 sec After 10 sec High...

Page 142: ...the maximum value within the system Pc_max 2 94MPa Pc_max 3 42MPa Pc_max 3 31MPa Pc_max 3 31MPa Pc_max 3 64MPa When occurring 3 times within 30 min HPS is activated without high pressure standby thus outputting the malfunction code E3 Normal Operation After 10 sec High pressure standby Compressor step 7 STEP down Set the compressor step to STEP 1 When high pressure is limited ...

Page 143: ... value within the system Pe_min 0 34MPa Pe_min 0 39MPa Pe_min 0 29MPa Pe_min 0 25MPa Pe_min 0 07MPa Pe_min 0 15MPa When occurring 4 times within 30 min the malfunction code E4 is output Normal Operation During the control of low pressure protection Low pressure standby Single type Compressor step of the present situation 0 5 Multi type 210Hz OFF OFF upper Single type 8 12HP 52Hz OFF 14 16HP 52Hz 5...

Page 144: ...ction code E4 is output Normal Operation Upper limit compressor step max Max step Upper limit compressor step 2 step up Upper limit compressor step 1 step up During the control of low pressure protection Compressor step 2 step down After 10 sec After 10 sec After 15 sec After 15 sec Pe_min 0 20MPa Low pressure standby For single unit 8 to 12HP 52Hz OFF 14 to 16HP 52Hz 52Hz upper limit For multi un...

Page 145: ...C Tp 110 C HTdi 130 C or HTdi 135 C HTdi 120 C continues for 10 minutes or more or After 30 sec After 20 sec Frequency agreement Tp 135 C HTdi 110 C Tp 125 C 52Hz OFF OFF HTdi 120 C continues for 90 seconds or more When occuring 3 times within 100 min the malfunction code F3 is output Normal operation INV upper limit step max Max step Discharge pipe temperature standby or After 10 min Discharge pi...

Page 146: ...protection control Perform the following control of integrated as well as multi units for each INV compressor Normal operation During the control of inverter protection Inverter current value 14 7A INV upper limit frequency max 210Hz Inverter current value 14 7A INV Comp upper limit step 1 step up Inverter current value 14 7A continues for 20 seconds Current status maintained 10 seconds INV Comp u...

Page 147: ... operation During the control of fin temperature protection Tfin 81 C INV upper limit frequency max 210Hz Tfin 84 C INV Comp upper limit step 1 step up Tfin 81 C continues for 3 minutes Current status maintained 10 seconds INV Comp upper limit step 1 step down Tfin 84 C Tfin 93 C Fin temperature standby When occuring 4 times within 60 min the malfunction code L4 is output ...

Page 148: ...esulting from failures of STD compressor such as locking STD compressor ON CT detection current value 15 0A STD compressor OFF for 30 min Demand to operate When occurring 3 times within 90 min the malfunction code E6 is output If the power supply is reset while in operation prohibition mode the prohibition timer will continue counting when the power supply is turned ON ...

Page 149: ...e compressor with operation disable setting made from operating and only operate other compressors On the system with 1 compressor REYQ8PY1 this emergency operation is not available 5 2 Demand Operation In order to save the power consumption the capacity of outdoor unit is saved with control forcibly by using Demand 1 Setting or Demand 2 Setting To operate the unit with this mode additional settin...

Page 150: ...c expansion valve Closed 20E MA OFF 52H Aux electric heater OFF 52H Humidifier OFF Mu Humidifier OFF Mu OFF ON a b Set temperature Suction air temperature a b 1 a b 0 5 is only available for the FXCQ FXFQ FXHQ and FXKQ series 20E Initialize electronic expansion valve The previous settings of air flow rate wind direction and temperature are displayed Is the safety device activated Is the RUN indica...

Page 151: ...g in progress Swing flap Set wind direction Fan Operating with set air flow rate MF Electronic expansion valve Capacity control 20E 20E 20E Fan LL operation MF Fan Operating in L mode MF Fan Stop MF b a 2 4 Suction air temp Set temp b a 3 2 1 3 2 1 Closed Electronic expansion valve Closed DEFROST HOT START indicating lamp OFF Electronic expansion valve Closed Electronic expansion valve Open Is out...

Page 152: ...near the preset temperature Ex When cooling Assuming the preset temperature in the figure above is 24 C and the suction temperature has changed from 18 C to 30 C A F This example also assumes there are several other air conditioners the VRV system is off and that temperature changes even when the thermostat sensor is off Body thermostat sensor is used for temperatures from 18 C to 23 C A C Remote ...

Page 153: ...can be used so that suction temperature is higher than the preset temperature Ex When heating Assuming the preset temperature in the figure above is 24 C and the suction temperature has changed from 18 C to 28 C A D This example also assumes there are several other air conditioners the VRV system is off and that temperature changes even when the thermostat sensor is off Body thermostat sensor is u...

Page 154: ...ormation on page onward 6 2 3 Thermostat Control in Dry Operation While in dry operation the thermostat control is conducted according to a suction temperature at the time of starting the dry operation Assuming that the suction air temperature at the time of starting the dry operation is Tro and the suction air temperature in operation is Tr Furthermore while in dry operation mode fans operate at ...

Page 155: ...al value 0 C 27 C 25 C 30 C Set cooling heating temp Heating mode Cooling mode Control temp Differential value set to 1 C 26 C 24 5 C 29 C Set heating temp 27 C Set cooling temp Heating mode Cooling mode Control temp Differential value set to 2 C 24 C 28 C Heating mode Cooling mode Control temp Differential value set to 3 C 23 5 C Heating mode Cooling mode Control temp 25 C Set heating temp 27 C S...

Page 156: ... in the figure below 6 3 1 When the Float Switch is Tripped while the Cooling Thermostat is ON 1 The objective of residual operation is to completely drain any moisture adhering to the fin of the indoor unit heat exchanger when the thermostat goes off during cooling operation 6 3 2 When the Float Switch is Tripped while the Cooling Thermostat is OFF ...

Page 157: ...reset even after the 5 minutes operation 5 seconds stop 5 minutes operation cycle ends operation continues until the switch is reset 6 3 4 When the Float Switch is Tripped and AF is Displayed on the Remote Controller Note If the float switch is tripped five times in succession a drain malfunction is determined to have occurred AF is then displayed as operation continues ...

Page 158: ...r As T Remote controller set temp Suction air temp becomes samller SHS becomes higher Sub cooled degree control in heating operation This function is used to adjust the opening of the electronic expansion valve so that the high pressure equivalent saturated temperature Tc which is converted from the detected pressure of the high pressure sensor in the outdoor unit and the subcooled degree SC which...

Page 159: ...sfied it returns Conditions for starting freeze prevention Temperature is 1 C or less for total of 40 min or temperature is 5 C or less for total of 10 min Conditions for stopping freeze prevention Temperature is 7 C or more for 10 min continuously Conditions for starting when air flow direction is two way or three way Conditions for starting Temperature is 1ºC or less for a total of 15 minutes or...

Page 160: ...FF is conducted by converting the heater temperature into the condensing pressure equivalent saturated temperature Tc according to the temperature detection through the high pressure sensor SINPH of the outdoor unit Fan residual operation While the heater turns OFF in order to prevent the activation of the thermal protector the fan conducts residual operation for a given period of time after the h...

Page 161: ...ostat OFF mode for prevention of cold air Swing LL Horizontal Horizontal Horizontal Wind direction set LL Horizontal Horizontal Horizontal Stop Swing OFF Horizontal Horizontal Totally closed Wind direction set OFF Horizontal Horizontal Totally closed Cooling Thermostat ON in dry operation using micro computer Swing L 1 Swing Swing Swing Wind direction set L 1 Set Set Set Thermostat OFF in dry oper...

Page 162: ...rt condition 2 is established the operations shown below will be conducted TH2 Temperature C detected with the gas thermistor TC High pressure equivalent saturated temperature Defrost ending or oil return ending or Thermostat ON The fan is not OFF before initiating the hot start LL The fan is OFF before initiating the hot start OFF Hot start control Hot start in progress Normal control Normal cont...

Page 163: ...low multi flow and corner types P0 P1 P2 P4 P3 P0 P1 P2 P4 P3 P0 P0 P1 P2 P4 P4 P2 P1 P0 P4 P4 P3 P2 P1 P0 P3 Existing position Draft prevention position Standard Setting position Ceiling soiling prevention position Not for Multi flow type Draft prevention position Standard position Prohibited Prohibited Dirt prevention position P0 P0 P0 P1 P2 P2 P1 P3 P3 P4 P4 P1 P2 P3 P4 Same as existing positio...

Page 164: ...st Operation 154 1 1 Installation Process 154 1 2 Procedure and Outline 155 1 3 Operation when Power is Turned On 187 2 Outdoor Unit PC Board Layout 188 3 Field Setting 189 3 1 Field Setting from Remote Controller 189 3 2 Field Setting from Outdoor Unit 202 ...

Page 165: ...r of the steps shown 3 Selection of Location 4 Inspecting and Handling the Unit 5 Placing the Unit 7 Field Wiring 6 Refrigerant Piping 8 Airtight Test and Vacuum Drying 9 Pipe Insulation 10 Checking of Device and Installation Conditions 11 Additional Refrigerant Charge and Check Operation 13 Test Run Operations which require the power to be turned on ...

Page 166: ... tester for other circuits than 200V or 240V circuit 1 Measure to be taken against decreased insulation resistance in the compressor If the compressor is left to stand for an extended period of time after the refrigerant charge with the stop valve open and the power supply OFF the refrigerant may be mixed in the compressor thus decreasing the insulation resistance Heat the compressor as shown on t...

Page 167: ... name Correction amount Ratio of total capacity of the connected indoor units to the rated capacity of the outdoor unit A Correction amount Model REYQ8 16PY1B 3 6 kg Model REYQ18 20P7Y1B 1 0kg Model REYQ18 32P7Y1B Model REYQ34 48P7Y1B Model REYQ22 24P7Y1B 1 5kg Model REYQ26P7Y1B 2 0kg Model REYQ28 30P7Y1B 2 5kg 100 A 120 0 5kg Model REYQ32 40P7Y1B 3 0kg 120 A 130 0 5kg 1 0kg Model REYQ42P7Y1B 3 5k...

Page 168: ...pen stop valves Check for excessive refrigerant refilling Automatic judgment of piping length Before starting the normal operation after the completion of check operations make sure indoor and outdoor units normally operate Turn outdoor unit and indoor unit power on Check the LED display of the outdoor unit PC board Conduct check operations Check for normal operation Make field settings with outdo...

Page 169: ... valve The refrigerant charge port is connected to unit pipe When shipped the unit contains the refrigerant so use caution when attaching the charge hose Gauge manifold Charge hose valve To prevent entry of any impurities and insure sufficient pressure resistance always use the special tools dedicated for R 410A Use charge hose that have pushing stick for connecting to service port of shutoff valv...

Page 170: ...pes should be done after performing 1 2 3 Air Tight Test and Vacuum Drying Always insulate the liquid piping the HP LP gas piping the gas piping the equalizer pipe between the outdoor units for the outdoor multi system and these pipe connections Failing to insulate the pipes may cause leaking or burns Especially be sure to insulate the HP LP gas piping as withstanding as the suction pipe because t...

Page 171: ...ylinder Check whether the cylinder has a siphon pipe before charging and place the cylinder so that the refrigerant is charged in liquid form See the figure below Note Always use the proper refrigerant R 410A If charged with the refrigerant containing an improper material it may cause an explosion or accident R 410A is a mixed refrigerant so charging it as a gas will cause the refrigerant composit...

Page 172: ...N60335 2 40 standard This means that in case the total maximum refrigerant charge of the system factory and additional charge is equal to or more than 100kg you must divide your multiple outdoor system into smaller independent systems each containing less than 100kg refrigerant charge For factory charge refer to the unit name plate Important information regarding the refrigerant used This product ...

Page 173: ...The 12HP type corresponds to the 12 7 diameter onsite piping using the accessory pipe Suction gas shutoff valve φ25 4 The 8HP type corresponds to the 19 1 diameter onsite piping using the accessory pipe The 10HP type corresponds to the 22 2 diameter onsite piping using the accessory pipe The 12 16 HP type corresponds to the 28 6 diameter onsite piping using the accessory pipe HP LP gas shutoff val...

Page 174: ...h the hexagon wrench JISB4648 2 Securely tighten the valve until the shaft contacts the main body seal 3 Make sure to tighten the cap securely For the tightening torque refer to the item Tightening Torque Tightening torque Shutoff valve size Tightening torque N m Turn clockwise to close Shaft valve body Cap valve lid Service port φ 9 5 5 4 6 6 Hexagonal wrench 4 mm 13 5 16 5 11 5 13 9 φ 12 7 8 1 9...

Page 175: ... once at Setting Mode 1 H1P off and set the MONITOR MODE H1P Blinking l h h h h h h 2 Press the SET button BS2 the number of times until the LED display matches that at right For checking the number of outdoor units eight times l h h k h h h For checking the number of indoor units five times l h h h k h k 3 Press the RETURN button BS3 and read the number of units from the display of H2P through H7...

Page 176: ... port is connected to the piping inside the unit When the unit is shipped from the factory the unit s internal piping is already charged with refrigerant so be careful when connecting the charge hose After adding the refrigerant make sure to close the lid of the refrigerant charging port The tightening torque for the lid is 11 5 to 13 9 Nm See Shutoff valve operation procedure in chapter 1 2 5 1 f...

Page 177: ...erating the push button and opening or closing the valves follow the procedure z During Automatic refrigerant charging operation the system will select charging mode cooling mode or heating mode by the temperature condition as follows When charging in cooling mode the system will stop operation when the required amount of refrigerant is charged During charging in heating mode a person must manuall...

Page 178: ...ge any state in below 3 go to In case of cooling mode or In case of heating mode in accordance with the LED displays In case of cooling mode 7 Push the TEST button BS4 once within 5 minutes after procedure 5 4 and close the all front panels 5 After that open the valve A immediately See bottom figure on page 166 6 and watch the remote controller display of indoor unit 8 If the remote controller dis...

Page 179: ... 5 If the front panel is opened during the operation the system cannot operate properly 6 If you leave the system without connecting the refrigerant tank or opening the valve A for 30 minutes or more the system stop operation and P2 code are displayed in remote controller In this case refer Remote controller cooling or heating mode malfunction code 7 Depending on the situation of operation such as...

Page 180: ...connected BS indoor units Be sure to turn the power on at least 6 hours before operation in order to have power running to the crank case heater 2 Make the onsite settings as needed using the push button BS1 BS5 on the outdoor unit PC board A1P with the power on See Field setting from outdoor unit on page 202 3 Perform the check operation following the Check Operation Method of the Service Precaut...

Page 181: ... continue operating for further 5 minutes at maximum z The outdoor unit fan may rotate at low speeds if the Night time low noise setting or the External low noise level setting is made but this is not a malfunction Malfunction code Installation error Remedial action E3 E4 F3 F6 UF The shutoff valve of the outdoor unit is left closed Open the shutoff valve U1 The phases of the power to the outdoor ...

Page 182: ...s complete z Record the contents of field setting Record them on the accessory REQUEST FOR THE INDICATION label And attach the label on the back side of the front panel z Record the installation date Record the installation date on the accessory REQUEST FOR THE INDICATION label in accordance with the IEC60335 2 40 And attach the label on the back side of the front panel Note After the test run whe...

Page 183: ... check the LED display after the power is on via the service lid which is in the lid of the electric component box Operate switches with an insulated stick such as a ball point pen to avoid touching the life parts Make sure to re attach the inspection cover into the switch box cover after the job is finished If the power of some units is turned off the charging procedure can not be finished proper...

Page 184: ... via the liquid pipe stop valve service port See figure below 4 If the calculated amount of pre charging is reached close valve B At least the unit should be charged with its original amount of refrigerant refer to the nameplate on the unit before starting the automatic charging 5 After pre charging perform the refrigerant charge operation as shown below and charge the remaining refrigerant of the...

Page 185: ...rm the refrigerant charging operation within the refrigerant system with one or more units with power OFF the refrigerant charging operation can not be accomplished properly For confirming the number of indoor units with power ON refer to How to check how many units are connected on page 179 In case of a multi system turn the power ON to all outdoor units in the refrigerant system To energize the ...

Page 186: ...or more the outdoor unit will stop operation and the P2 code will be displayed on the remote controller of the indoor unit Follow the procedure as described in Remote controller malfunction code display on page 178 When a malfunction occurs check the display of the remote controller and refer to Remote controller malfunction code display on page 178 9 Complete If the calculated amount of refrigera...

Page 187: ...mote controller Refer to Remote controller malfunction code display on page 178 8 Operation When the following LED display is shown open valve A and close the front panel If the front panel is left open the system can not operate properly during the refrigerant charging When the refrigerant tank is not connected or is left with the valve closed for 30 minutes or more the outdoor unit will stop ope...

Page 188: ...d in the display of the remote controller and restart the complete charging procedure When the charging amount is little the PE code may not be displayed but instead the P9 code will be displayed immediately 10 Press the BS1 MODE button once and the charging is complete Record the amount that was added on the additional refrigerant charge label provided with the unit and attach it on the back side...

Page 189: ...C slave unit 2 flashing PA PH and PC all units After recplacing the cylinder open valve A again and continue the work In case of an outdoor multi system replacing the refrigerant tank of the outdoor unit during the refrigerant charging operation when the display on the remote controller is not showing PA PH or PC may cause an abnormal stop of the refrigerant charging operation P8 recharge operatio...

Page 190: ...u will return to setting mode 1 H1P h OFF 1 Setting mode 1 default system status Press the BS1 MODE button to switch from setting mode 1 to monitor mode 2 Monitor mode To check the number of indoor units press the BS2 SET button 5 times 3 Monitor mode Pressing the BS3 RETURN button causes the LED display to show the data on the number of indoor units that are connected 4 Monitor mode Calculate the...

Page 191: ...n the main circuit and cause electric shock 5 After the service is finished plug the junction connecter back in Otherwise the error code E7 will be displayed on the remote controller and normal operation will not be performed For details refer to the wiring diagram labelled on the back of the electric box cover Pay attention to the fan It is dangerous to inspect the unit while the fan is running B...

Page 192: ...cover 6 Insulation test of the main power circuit Measure the insulation resistance and check if the value is in accordance with relevant local and national regulations 7 Installation date and field setting Be sure to keep record of the installation date on the sticker on the rear of the upper front panel according to EN60335 2 40 and keep record of the contents of the field setting 1 2 6 3 Field ...

Page 193: ... of the H8P multi LED in a multi system shows which unit is the master unit i slave 1 unit j or slave 2 unit h Only the master unit is connected to the indoor units with interunit wiring For changing the set mode For field setting For field setting For test operation For resetting the address when the wiring is changed or when an additional indoor unit is installed BS2 SET BS1 MODE BS3 RETURN BS4 ...

Page 194: ...ton according to the required setting possibility as shown below in the field marked 3 1Possible settings for function A B F and G are ON or OFF a This setting factory setting BS1 MODE BS1 MODE BS1 MODE BS1 MODE BS1 MODE Possible functions A additional refrigerant charging operation B refrigerant recovery operation vacuuming operation C automatic low noise operation setting at nighttime D low nois...

Page 195: ...r preparation or under test operation 2 Indication of low noise operation state h standard operation factory setting i operation 3 Indication of power consumption limitation setting h standard operation factory setting i operation 1 2 6 4 Test operation Do not insert fingers rods or other objects into the air inlet or outlet When the fan is rotating at high speed it will cause injury Do not perfor...

Page 196: ...the field setting as described in the paragraph 1 2 6 3 Field setting on page 181 4 Press the button once and set to the SETTING MODE H1P LED OFF 5 Press and hold the button down for 5 seconds or more The unit will start the test operation The test operation is automatically carried out in cooling mode the H2P LED will light up and the messages Test operation and Under centralized control will dis...

Page 197: ... and under the setting mode 2 set the required function B refrigerant recovery operation vacuuming operation to ON The indoor unit BS unit and the outdoor unit expansion valves will fully open The H1P LED is on and the remote controller indicates test operation and external control and the operation will be prohibited 2 Recover the refrigerant by a refrigerant reclaimer For details see the operati...

Page 198: ...door outdoor address etc Status Outdoor unit Test lamp H2P Blinks Can also be set during operation described above Indoor unit If ON button is pushed during operation described above the UH malfunction indicator blinks Returns to normal when automatic setting is complete Outdoor unit Test lamp H2P Blinks Can also be set during operation described above Indoor unit If ON button is pushed during ope...

Page 199: ...r Multi outdoor 2 Set mode display LED 3 Mode setting switch 1 Microcomputer normal monitor 4 Local setting switch Connection terminal for transmission use DS1 DS2 HAP V3054 1 Microcomputer normal monitor This monitor blinks while in normal operation and turns on or off when a malfunction occurs 2 Set mode display LED LEDs display mode according to the setting 3 Mode setting switch Used to change ...

Page 200: ...for a minimum of four seconds and the FIELD SET MODE is entered 2 Select the desired MODE NO with the button 3 During group control when setting by each indoor unit mode No 20 22 and 23 have been selected push the button and select the INDOOR UNIT NO to be set This operation is unnecessary when setting by group 4 Push the upper button and select FIRST CODE NO 5 Push the lower button and select the...

Page 201: ...he field set mode 2 Select the desired mode No with the button 3 Pushing the button select the first code No 4 Pushing the button select the second code No 5 Push the timer button and check the settings 6 Push the button to return to the normal mode Example When setting the filter sign time to Filter Dirtiness High in all group unit setting set the Mode No to 10 Mode setting No to 0 and setting po...

Page 202: ...ach indoor unit mode No 20 22 and 23 have been selected push the BS8 BUTTON unit No and select the INDOOR UNIT NO to be set This operation is unnecessary when setting by group 5 Push the BS9 BUTTON set A and select FIRST CODE NO 6 Push the BS10 BUTTON set B and select SECOND CODE NO 7 Push the BS7 BUTTON set cancel once and the present settings are SET 8 Push the BS6 BUTTON field set to return to ...

Page 203: ...Only body thermostat Only remote controller thermostat 3 3 Display time to clean air filter calculation Set when filter sign is not to be displayed Display No display 4 12 22 0 Optional accessories output selection field selection of output for adaptor for wiring Indoor unit turned ON by thermostat Operation output Malfunction output 5 1 ON OFF input from outside Set when ON OFF is to be controlle...

Page 204: ...Floor standing unit Concealed floor standing unit Roundflow 4 way blow 2 way blow Corner type FXFQ FXZQ FXCQ FXKQ FXDQ FXDQ FXSQ FXMQ FXHQ FXAQ FXLQ FXNQ Filter sign Ultra long life filter sign Remote controller thermostat sensor Set fan speed when thermostat OFF Air flow adjustment Ceiling height Air flow direction Air flow direction adjustment Down flow operation Air flow direction adjustment ra...

Page 205: ...ected 5 Optional Output Switching Using this setting operation output signal and abnormal output signal can be provided Output signal is output between terminals K1 and K2 of customized wiring adapter an optional accessory Filter Specs Setting Standard Long Life Ultra Long Life Filter Contamination Light 200 hrs 2 500 hrs 10 000 hrs Contamination Heavy 100 hrs 1 250 hrs 5 000 hrs Mode No Setting S...

Page 206: ...ence over 7 Fan Stop When Thermostat is OFF 9 Setting of operation mode to AUTO This setting makes it possible to change differential values for mode selection while in automatic operation mode The automatic operation mode setting is made by the use of the Operation Mode Selector button F2 T1 T2 Forced stop Input A Mode No Setting Switch No Setting Position No Operation by input of the signal A 12...

Page 207: ...he Case of FXFQ100 125 Caution 1 The air conditioner starts operation suddenly after power failure reset or the main power supply turned on again Consequently the user might be surprised with question for the reason why 2 In the service work for example turning off the main power switch during the unit is in operation and turning on the switch again after the work is completed start the unit opera...

Page 208: ...tting of the Static Pressure Selection for FXDQ model 17 Humidification When Heating Thermostat is OFF Setting to Humidification Setting turns ON the humidifier if suction temperature is 20ºC or above and turns OFF the humidifier if suction temperature is 18ºC or below when the heating thermostat is OFF Mode No First Code No Second Code No Setting 13 23 1 01 F 4 direction air flow 02 T 3 direction...

Page 209: ...he unit this setting is unnecessary 20 Individual Setting of Ventilation This is set to perform individual operation of heat reclaim ventilation using the remote controller central unit when heat reclaim ventilation is built in Switch only when heat reclaim ventilation is built in Mode No First Code No Second Code No Contents 15 25 2 01 Without direct duct connection 02 With direct duct connection...

Page 210: ...et the selected group No 5 Press to return to the NORMAL MODE Note For wireless remote controller see the following For setting group No of HRV and wiring adaptor for other air conditioners etc refer to the instruction manual attached NOTICE Enter the group No and installation place of the indoor unit into the attached installation table Be sure to keep the installation table with the operation ma...

Page 211: ...e set and displayed by operation modes 0 through 19 ON OFF control impossible by remote controller Used when you want to turn on off by central remote controller only Cannot be turned on off by remote controller OFF control only possible by remote controller Used when you want to turn on by central remote controller only and off by remote controller only Centralized Used when you want to turn on b...

Page 212: ...rol by remote controller Controlmode Operation OFF Temperature control Operation mode setting Unified operation individual operation by central remote controller or operation controlled by timer Unified OFF individual stop by central remote controller or timer stop ON OFF control impossible by remote controller Rejection Example Rejection Example Rejection Example Rejection Acceptance 0 Rejection ...

Page 213: ...o 29 218 222 3 Setting of demand operation 1 Used to place limits on the compressor operating frequency to control the upper limit of power consumption 1 Mode 1 of Demand 1 60 or less of rating 2 Mode 2 of Demand 1 70 or less of rating 3 Mode 3 of Demand 1 80 or less of rating 4 Demand 2 40 or less of rating For setting with the use of external control adapter Set the system to External control ad...

Page 214: ...door unit s concerned and to conduct emergency operation of the system only with operable or outdoor unit s Make this setting while in Setting mode 2 For system with multiple outdoor units Set with No 38 39 or 40 226 229 8 Additional refrigerant charging 1 If a necessary amount of refrigerant cannot be charged due to the stop of outdoor unit operate the outdoor unit and then refill refrigerant Set...

Page 215: ...arts PC board After the replacement by the spare PC board be sure to make settings shown below When you change the main PC board A1P to spare parts PC board please carry out the following setting DIP Switch Detail DS No Item Contents DS1 2 Power supply specification ON 200V class 220V OFF Factory setting of spare PC board 400V class 380V DS1 3 Except Multiple use Cooling only Heat pump setting ON ...

Page 216: ...ches HEAT RECOVERY 8HP REYQ8PY1B Set DS1 4 and DS2 3 to ON 1 2 3 1 2 3 4 ON OFF 4 DS1 DS2 HEAT RECOVERY 10HP REYQ10PY1B Set DS1 4 to ON 1 2 3 1 2 3 4 ON OFF 4 DS1 DS2 HEAT RECOVERY 12HP REYQ12PY1B Set DS1 4 and DS2 2 to ON 1 2 3 1 2 3 4 ON OFF 4 DS1 DS2 HEAT RECOVERY 14HP REYQ14PY1B Set DS1 3 DS1 4 and DS2 2 to ON 1 2 3 1 2 3 4 ON OFF 4 DS1 DS2 HEAT RECOVERY 16HP REYQ16PY1B Set DS1 3 DS1 4 and DS2...

Page 217: ...and DS2 2 to ON 1 2 3 1 2 3 4 ON OFF 4 DS1 DS2 HEAT RECOVERY 10HP REYQ10PY1B Set DS1 3 and DS2 2 to ON 1 2 3 1 2 3 4 ON OFF 4 DS1 DS2 HEAT RECOVERY 12HP REYQ12PY1B Set DS1 3 and DS2 2 to ON 1 2 3 1 2 3 4 ON OFF 4 DS1 DS2 HEAT RECOVERY 14HP REYQ14PY1B Set DS1 3 DS2 1 and DS2 4 to ON 1 2 3 1 2 3 4 ON OFF 4 DS1 DS2 HEAT RECOVERY 16HP REYQ16PY1B Set DS1 3 DS2 1 and DS2 3 to ON 1 2 3 1 2 3 4 ON OFF 4 D...

Page 218: ... OFF 4 DS1 DS2 Application model HEAT RECOVERY 8HP REMQ8PY1B HEAT RECOVERY 10HP REMQ10PY1B HEAT RECOVERY 12HP REMQ12PY1B HEAT RECOVERY 14HP REMQ14PY1B HEAT RECOVERY 16HP REMQ16PY1B Set DS1 4 DS2 2 and DS2 3 to ON Set DS1 4 and DS2 4 to ON Set DS1 4 DS2 2 and DS2 4 to ON Set DS1 4 DS2 3 and DS2 4 to ON Set DS1 4 DS2 2 DS2 3 and DS2 4 to ON 1 2 3 1 2 3 4 ON OFF 4 DS1 DS2 Multiple Type Allocation For...

Page 219: ... in servicing the system e Monitor mode H1P blinks Used to check the program made in Setting mode 2 Mode changing procedure 1 LED display MODE H1P TEST H2P COOL HEAT select Low noise H6P Demand H7P Multi H8P IND H3P MASTER H4P SLAVE H5P Single outdoor unit system h h k h h h h h Outdoor multi system Master h h k h h h h k Slave 1 h h h h h h h l Slave 2 h h h h h h h h Pushbutton switches BS1 MODE...

Page 220: ...Press BS3 RETURN button Setting item selection SET button Setting mode 2 Set Select mode with BS2 SET button in each selection step Setting condition selection SET button Setting condition Contents display Press BS3 RETURN button Press BS3 RETURN button Press BS3 RETURN button Press BS1 MODE button Press BS1 MODE button Press BS1 MODE button Press BS1 MODE button for more than 5 sec V2762 ...

Page 221: ...mode other than that push the MODE BS1 button to set the system to Setting mode 1 Check the system for each condition through LED displays Refer to information in table on the right Pushing the RETURN BS3 button will bring the system to the initial state of Setting mode 1 Procedure for checking check items V2763 MODE H1P TEST H2P COOL HEAT select IND H3P MASTER H4P SLAVE H5P Low noise H6P Demand H...

Page 222: ...ration Used to forcedly turn ON the ENECUT Be noted that the ENECUT is only functional with outdoor unit in the stopped state Japanese domestic model only 25 Setting of external low noise level Sets low noise level when the low noise signal is input from outside 26 Night time low noise operation start setting Sets starting time of nighttime low noise operation Night time low noise setting is also ...

Page 223: ...ndoor unit is long in length refrigerant passing sounds may become louder at the time of BS Cool Heat selection This setting shortens the Cool Heat selection time of all BS units provided in the same refrigerant system 42 Setting of BS Cool Heat selection control time Make this setting to prevent a rise in room temperature due to minute heating capacity generated by heating thermostat OFF unit or ...

Page 224: ...gh k h h h k k k 9 Tc setting k h h k h h k Low k h h h h h k Normal factory setting k h h h h k h High k h h h k h h 10 Defrost changeover setting k h h k h k h Slow defrost k h h h h h k Normal factory setting k h h h h k h Quick defrost k h h h k h h 11 Sequential operation setting k h h k h k k OFF k h h h h h k ON k h h h h k h 12 External low noise demand setting k h h k k h h External low n...

Page 225: ...h k k k k h 60 demand k h h h h h k 70 demand k h h h h k h 80 demand k h h h k h h 32 Normal demand setting k k h h h h h OFF k h h h h h k Demand 1 k h h h h k h Demand 2 k h h h k h h 38 Emergency operation Master unit is inhibited to operate k k h h k k h OFF k h h h h h k Master unit operation Inhibited k h h h h k h 39 Emergency operation Slave unit 1 is inhibited to operate k k h h k k k OF...

Page 226: ...l h h h k h k 6 Number of connected BS units 2 l h h h k k h 7 Number of connected zone units Fixed to 0 l h h h k k k 8 Number of outdoor units 3 l h h k h h h 9 Number of BS units 4 l h h k h h k Lower 4 digits upper 10 Number of BS units 4 l h h k h k h Lower 4 digits lower 11 Number of zone units l h h k h k k Lower 6 digits 12 Number of terminal units 5 l h h k k h h Lower 4 digits upper 13 N...

Page 227: ... address is expressed as a binary number consisting of the lower 6 digits 0 63 In c the address is 010110 binary number which translates to 16 4 2 22 base 10 number In other words the address is 22 The number of terminal blocks for No 12 and 13 is expressed as an 8 digit binary number which is the combination of four upper and four lower digits for No 12 and 13 respectively 0 128 In d the address ...

Page 228: ...TE 1 2 1 2 F2 B C A F2 F1 F1 F2 F1 Outside unit TOIN DUNIT TOOUT DUNIT F1 F2 F1 F2 F1 F2 F1 F2 IN D OUT D BS REMOTE CONTROLLER BS unit A F1 F2 F1 F2 IN D OUT D BS BS unit B COOL HEAT selector Branch wiring Use 2 core wires There is no polarity B C A REMOTE CONTROLLER COOL HEAT selector Cool heat selector remote control wiring Use 3 core wires Keep in mind the polarity F1 F2 F1 F2 IN D OUT D BS B C...

Page 229: ...The external control adaptor for outdoor unit is not required 1 While in Setting mode 2 select the setting condition i e Level 1 Level 2 or Level 3 for set item No 22 Setting of nighttime low noise level 2 If necessary while in Setting mode 2 select the setting condition i e 20 00 22 00 or 24 00 for set item No 26 Setting of start time of nighttime low noise operation Use the start time as a guide...

Page 230: ...db target Approx 45 db target Note1 Above values are reference only measured in silent room Note2 Above values are for 1 module only Operation sound of level 2 Operation sound of level 1 Operation sound of level 3 Operation sound of level 2 Operation sound of level 1 Operation sound of level 3 Operation sound of level 2 Operation sound of level 1 Operation sound of level 3 Mole 2 precedes Level 1 ...

Page 231: ... constant demand to ON 2 While in Setting mode 2 select the set item No 30 Setting of Demand 1 level and then set the setting condition to targeted mode Description of setting Setting procedure Setting item Condition Description External control adaptor Outdoor unit PC board Demand 1 Level 1 Operate with power of approx 60 or less of the rating Short circuit between 1 and C of the terminal block T...

Page 232: ...hen the Normal demand setting is set to ON OFF has been set at factory the power consumption can be set with the Demand 1 level setting 70 of rated power consumption has been set at factory Power consumption Rated power consumption 80 of rated power consumption 70 of rated power consumption 60 of rated power consumption V3083 The power consumption set with Demand 1 level setting 0Demand level 2 in...

Page 233: ... H1P on c In setting 1 push and hold the BS1 MODE button for more than 5 seconds Setting mode 2 is entered and H1P lights d Push the BS2 SET button several times and match the LED display with the Setting No you want e Push the BS3 RETURN button one time and the present setting content is displayed Push the BS2 SET button several times and match the LED display with the setting content as shown be...

Page 234: ... z z z z l Mode 2 Factory setting z z z z l z Mode 3 z z z l z z 26 Night time low noise start setting z z z PM 8 00 z z z z z l PM 10 00 Factory setting z z z z l z PM 0 00 z z z l z z 27 Night time low noise end setting z z AM 6 00 z z z z z l AM 7 00 z z z z l z AM 8 00 Factory setting z z z l z z 29 Capacity precedence setting z z Low noise precedence Factory setting z z z z z l Capacity prece...

Page 235: ...uming mode to ON The respective expansion valve of indoor and outdoor units are fully opened H2P turns to display TEST OPERATION blinks TEST OPERATION and UNDER CENTRALIZED CONTROL are displayed on the remote controller and the all indoor outdoor unit operation is prohibited After setting do not cancel Setting Mode 2 until completion of refrigerant recovery operation d Collect the refrigerant usin...

Page 236: ...e the vacuum pump to perform vacuuming operation e Press Mode button BS1 once and reset Setting Mode 2 3 2 8 Check Operation Detail Unit stopping Press the TEST button for 5 seconds 10 sec to 10 minutes LED display H1P H7P k ON h OFF l BLINK h h k h h h h h l h h h h k Pressure equalizing Step 1 20 sec to 2 minutes Stop valve check Stop valve check Wrong wiring check Piping length check 5 minutes ...

Page 237: ...ile in heating or cooling heating concurrent operation One out of three connected outdoor units malfunctions Emergency operation is possible Two out of three connected outdoor units malfunction Emergency operation is not possible One out of two connected outdoor units malfunctions Emergency operation is not possible Emergency operation by setting outdoor unit PC board In malfunction stop state of ...

Page 238: ...h h h 6 Press the PAGE button BS1 once h h k h h h h LED display k ON h OFF l Blink H1P H7P H8P Outdoor unit 1 h h k h h h h k Outdoor unit 2 h h h h h h h l Outdoor unit 3 h h h h h h h h Factory setting LED display k ON h OFF l Blink Step H1P H7P 1 Press and hold the PAGE button BS1 for 5 sec or more k h h h h h h 2 Press the OPERATE button BS2 38 times k k h h k k h 3 Press the CHECK button BS3...

Page 239: ...more k h h h h h h 2 Press the OPERATE button BS2 38 times k k h h k k h 3 Press the CHECK button BS3 once k h h h h l h 4 Press the OPERATE button BS2 once k h h h h h l Factory setting 5 Press the CHECK button BS3 twice k h h h h h h 6 Press the PAGE button BS1 once h h k h h h h LED display k ON h OFF l Blink Step H1P H7P 1 Press the PAGE button BS1 for 5 seconds or more k h h h h h h 2 Press t...

Page 240: ...button BS2 39 times k k h h k k k 3 Press the CHECK button BS3 once k h h h h l h 4 Press the OPERATE button BS2 once k h h h h h l Factory setting 5 Press the CHECK button BS3 twice k h h h h h h 6 Press the PAGE button BS1 once h h k h h h h LED display k ON h OFF l Blink Step H1P H7P 1 Press the PAGE button BS1 for 5 seconds or more k h h h h h h 2 Press the OPERATE button BS2 40 times k k h k ...

Page 241: ... heating prevention setting of every BS unit In this case enable the outdoor unit setting 3 2 11 Reduction of Cooling Heating Selection Time of BS Units Make this setting to reduce selection time between cooling and heating of the BS units with careful attention paid to the following points This setting is only enabled in case the refrigerant piping length between every BS unit connected to the ou...

Page 242: ...mit 266 3 8 AJ Indoor Unit Malfunction of Capacity Determination Device 267 3 9 C4 Indoor Unit Malfunction of Thermistor R2T for Heat Exchanger 268 3 10 C5 Indoor Unit Malfunction of Thermistor R3T for Gas Pipes 269 3 11 C9 Indoor Unit Malfunction of Thermistor R1T for Suction Air 270 3 12 CJ Indoor Unit Malfunction of Thermostat Sensor in Remote Controller 271 3 13 E1 Outdoor Unit PC Board Defect...

Page 243: ...ction 320 3 42 P4 Outdoor Unit Malfunction of Inverter Radiating Fin Temperature Rise Sensor 322 3 43 PJ Outdoor Unit Faulty Field Setting after Replacing Main PC Board or Faulty Combination of PC Board 324 3 44 U0 Outdoor Unit Gas Shortage Alert 326 3 45 U1 Reverse Phase Open Phase 328 3 46 U2 Outdoor Unit Power Supply Insufficient or Instantaneous Failure 329 3 47 U3 Outdoor Unit Check Operation...

Page 244: ...ntralized Control 360 4 4 MC Address Duplication Improper Setting 362 5 Troubleshooting OP Unified ON OFF Controller 363 5 1 Operation Lamp Blinks 363 5 2 Display Under Centralized Control Blinks Repeats Single Blink 365 5 3 Display Under Centralized Control Blinks Repeats Double Blink 368 ...

Page 245: ... system is controlled so as not to put unreasonable loads on the system Normal operation The system will automatically start operation after a lapse of five minutes Pressing the TEMP ADJUST button immediately resets the system The remote controller displays UNDER CENTRALIZED CONTROL which blinks for a period of several seconds when the OPERATION button is depressed The system is controlled with ce...

Page 246: ...ration Indoor and outdoor units After the completion of defrosting operation the system is switched to heating operation Defrosted moisture turns to be vapor and comes out from the units Normal operation 11 The system produces sounds Indoor unit Immediately after turning ON the power supply indoor unit produces ringing sounds These are operating sounds of the electronic expansion valve of the indo...

Page 247: ...he system is checking to be sure the remote controller is normal Normal operation This code is displayed for a period of approximately one minute at maximum 16 The outdoor unit compressor or the outdoor unit fan does not stop After stopping operation It stops in order to prevent oil or refrigerant from dwelling Normal operation It stops after a lapse of approximately 5 to 10 minutes 17 The outdoor...

Page 248: ...tion button for more than 4 seconds Press Inspection Test Operation button once Press Inspection Test Operation button once Or after 30 minutes After 10 seconds Press Inspection Test Operation button once Press Inspection Test Operation button once Indoor unit settings can be made Filter sign time Air flow direction Others Following codes can be checked Malfunction codes Indoor model code Outdoor ...

Page 249: ...malfunction code and malfunction contents Note 1 Pressing the INSPECTION TEST button will blink the check indication 2 While in check mode pressing and holding the ON OFF button for a period of five seconds or more will clear the failure history indication shown above In this case on the codes display the malfunction code will blink twice and then change to 00 Normal the Unit No will change to 0 a...

Page 250: ...nduct all of the following operations 1 short beep Conduct steps 3 and 4 Continue the operation in step 4 until a buzzer remains ON The continuous buzzer indicates that the malfunction code is confirmed Continuous beep No abnormality 3 Press the MODE selector button The left 0 upper digit indication of the malfunction code flashes 4 Malfunction code upper digit diagnosis Press the UP or DOWN butto...

Page 251: ...Troubleshooting by Remote Controller SiBE37 701 240 Troubleshooting The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed ...

Page 252: ...SiBE37 701 Troubleshooting by Remote Controller Troubleshooting 241 ...

Page 253: ...II Heat Recovery Series Display A A 1 A A 3 A 9 2 A A 5 A A A A A C A A E A 9 E Outdoor model code Model RSXYP RXYP RSEYP RSXYP L RXYQ M RXYQ MA RXYQ P RXQ P REYQ P Unit Malfunction code Inspection Normal display No display 0 L 0 Malfunction code blinks when a malfunction occurs Unit Malfunction code Inspection Inspection mode Push the button Inspection test operation Push the button Inspection te...

Page 254: ...or wireless remote controller Mode 43 only can be set 2 Select the unit No For group control only Select the indoor unit No to be set with the time mode For wireless remote controller button 3 Make the settings required for each mode Modes 41 44 45 In case of Mode 44 45 push button to be able to change setting before setting work LCD code blinks For details refer to the table in next page 4 Define...

Page 255: ...nit When you want to search for the unit No By selecting the unit No with the button you can turn the fan of each indoor unit on forced ON individually 44 Individual setting Set the fan speed and air flow direction by each unit Select the unit No with the time mode button Set the fan speed with the button Set the air flow direction with the button 45 Unit No transfer Transfer unit No Select the un...

Page 256: ...d with a self diagnosis function so that more appropriate maintenance can be carried out If a malfunction occurs during operation the operation lamp malfunction code and display of malfunctioning unit No let you know the contents and location of the malfunction When there is a stop due to malfunction the contents of the malfunction given below can be diagnosed by a combination of operation lamp IN...

Page 257: ...ck 277 E6 l l l STD copmressor motor overcurent lock 279 E7 l l l Malfunction of outdoor unit fan motor 280 E9 l l l Malfunction of moving part of electronic expansion valve Y1E Y5E 283 F3 l l l Abnormal discharge pipe temperature 285 F6 l l l Refrigerant overcharged 287 F9 l l l Malfunction of BS unit electronic expansion valve 288 H7 l l l Abnormal outdoor fan motor signal 290 H9 l l l Malfuncti...

Page 258: ...door and outdoor units in the same system 344 UA l l l Improper combination of indoor and outdoor units indoor units and remote controller 345 UC k k k Address duplication of centralized controller 351 UE l l l Malfunction of transmission between centralized controller and indoor unit 352 UF l l l System is not set yet 355 UH l l l Malfunction of system refrigerant system address undefined 356 Cen...

Page 259: ...gnal malfunction Abnormal outdoor temperature Ta sensor malfunction short circuited or open H9 Abnormal discharge pipe temperature Td malfunction F3 Abnormal heat exchanger temperature Refrigerant overcharged F6 BS unit electronic expansion valve malfunction BS EVH disconnected Y4E F9 BS EVL disconnected Y5E BS EVHS disconnected Y2E BS EVLS disconnected Y3E BS EVSC disconnected Y1E Current sensor ...

Page 260: ... h l h h 1 F6 l h l l h l h h h h l h h l l F9 l l h h l l h h h l l h h l l l h h l h l h h l l l h h l l l h h l l l h l h h l h h l l l h l h l l h h l l J2 l h l l h l h h l h l h h h h l h h 1 l h h h h l h l l h h h h l h l J3 l h h l l l h h h h l h h l h h h h l h l l h h h h l l h J4 l h l h h l h h h h l h h J5 l h l h l l h h h h l h h J6 l h l l h l h h h h l h h J7 l h l l l l h h h h...

Page 261: ...Reversed phase malfunction ON Abnormal power supply voltage Insufficient INV voltage U2 INV open phase single phase Abnormal charge of capacitor of INV main circuit Test run not carried out yet Test run not carried out yet U3 Faulty transmission between indoor and outdoor units IN OUT transmission malfunction U4 System malfunction Faulty transmission between outdoor units Malfunction caused when m...

Page 262: ... h l h h l l l h h h h l h l l l U7 l h l l l l h h h h l h h l l l h h h h l h l l l l h h h h l l h l l l h h h h l l l l l l h h h l l h h l l l h h h l l h l l l l h h h l l l h l l l h h h l l l l l l U9 l l h h l l h h h h l h h l l UA l l h l h l h h h h l l h l l l h h h l l h h l l l h h h l l h l l l l h h l h l h l l l l h h l h l l h l l l h h l l l h l l l l h h l l l l h l l l h h l ...

Page 263: ...nals with the remote controller set to external ON OFF terminal Supposed Causes Actuation of external protection device Improper field set Defect of indoor unit PC board Troubleshooting V2776 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Indoor unit PC board replacement Actuation of external protection device Change the second code ...

Page 264: ...ceived from the E PROM E PROM Type of nonvolatile memory Maintains memory contents even when the power supply is turned off Supposed Causes Defect of indoor unit PC board Troubleshooting Turn power supply OFF then power ON again Does the system return to normal YES Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Replace the indoor uni...

Page 265: ...FXHQ Option FXMQ200 250M Option FXAQ Option Method of Malfunction Detection By float switch OFF detection Malfunction Decision Conditions When rise of water level is not a condition and the float switch goes OFF Supposed Causes 220 240V power supply is not provided Defect of float switch or short circuit connector Defect of drain pump Drain clogging upward slope etc Defect of indoor unit PC board ...

Page 266: ...indoor unit PC board Loose connection of connector NO NO NO YES YES NO NO YES NO YES NO NO The float switch is connected to X8A of the indoor unit PC board NO The drain pump works when the power supply is reset for the indoor unit The drain pump is connected to X25A or terminals Y1 and Y2 of the indoorunit PC board The voltage of terminals Y1 and Y2 or X25A is 220 240 V within 5minutes of resettin...

Page 267: ...ditions When the fan revolutions do not increase Supposed Causes Broken wires in short circuit of or disconnection of connectors from the fan motor harness Faulty fan motor Broken wires or faulty insulation Abnormal signal output from the fan motor Faulty circuit Faulty PC board Instantaneous disturbance in the power supply voltage Fan motor lock Due to motor or external causes The fan does not ro...

Page 268: ... 6 7 Red FG Vsp Vcc GND Vdc Vdc 1 GND 2 3 3 FG 4 Vsp 1 2 5 Vcc Measuring point FG GND Vsp GND Vcc GND Vdc GND Criteria Not less than 1MΩ Not less than 100kΩ Not less than 100Ω Not less than 100kΩ Judgment Criteria FXAQ 20 63MAVE FXFQ 20 125P7VE Disconnect the connector from the fan motor and then make measurement of resistance between pins 2 Turn OFF the power supply and then wait for a period of ...

Page 269: ...the maximum output voltage to the fan Supposed Causes Faulty indoor fan motor Broken wires Faulty contact Troubleshooting Is the power of approx 12VDC supplied between the Pins1 and 3 when the X27A is disconnected and the power supply turns ON YES NO NO YES Are the X4A and X27A connectors securely connected At this time check for any faulty connector contact or broken wires Check the indoor unit f...

Page 270: ... for the indoor unit fan turns ON while in operation Supposed Causes Faulty power supply for the indoor unit fan motor Clogged drain piping Actuation of the indoor unit safety device Faulty contact in the fan wiring circuit Troubleshooting NO NO YES Is the power supply cable of the indoor unit fan properly connected YES Is the fan normally running Restart the fan Properly connect the cable It is s...

Page 271: ...limit switch when the motor turns Malfunction Decision Conditions When ON OFF of the microswitch for positioning cannot be reversed even though the swing flap motor is energized for a specified amount of time about 30 seconds Error code is displayed but the system operates continuously Supposed Causes Defect of swing motor Defect of connection cable power supply and limit switch Defect of air flow...

Page 272: ...ace indoor unit PC board NO NO YES NO YES NO YES YES NO Indoor unit is a model equipped with a swing flap function The swing motor works when the power supply is turned off and then back on When the air flow direction flap s cam mechanism is disconnected from the swing motor operation is normal when turned on again The connecting cable has no continuity After turning the swing flap ON and then sto...

Page 273: ...tronic expansion valve main body by using microcomputer Malfunction Decision Conditions Pin input for electronic expansion valve coil is abnormal when initializing microcomputer Either of the following conditions is seen caused occurs while the unit stops operation z Temperature of suction air R1T temperature of liquid pipe of heat exchanger R2T 8 C z Temperature of liquid pipe of heat exchanger R...

Page 274: ...alve main body When power is supplied YES YES 1 How to check the coil of electronic expansion valve drive Remove the connector for electronic expansion valve X7A from PC board Measure the resistance value between pins and check the continuity to judge the condition 1 White 2 Yellow 3 Orange 4 Blue 6 Brown 5 Red The normal products will show the following conditions No continuity between 1 and 2 Re...

Page 275: ...e Models Indoor units except FXFQ models Method of Malfunction Detection Check coil condition of electronic expansion valve by using microcomputer Malfunction Decision Conditions Pin input for electronic expansion valve coil is abnormal when initializing microcomputer Supposed Causes Defective drive of electronic expansion valve Defective PC board of indoor unit Defective relay cables ...

Page 276: ...oard Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred YES 1 How to check the coil of electronic expansion valve drive Remove the connector for electronic expansion valve X7A from PC board Measure the resistance value between pins and check the continuity to judge the condition 1 White 2 Yellow 3 Orange 4 Blue 6 Brown 5 Red The normal p...

Page 277: ...om ON to OFF while the compressor is in non operation Error code is displayed but the system operates continuously Supposed Causes Humidifier unit optional accessory leaking Defect of drain pipe upward slope etc Defect of indoor unit PC board Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Defect of indoor unit PC boar...

Page 278: ... is determined Malfunction Decision Conditions When the capacity code is not contained in the PC board s memory and the capacity setting adaptor is not connected Supposed Causes The capacity setting adaptor was not installed Defect of indoor unit PC board Troubleshooting V2783 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Install a ...

Page 279: ...unning Supposed Causes Defect of thermistor R2T for liquid pipe Defect of indoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P437 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Remove the thermistor from the indoor unit PC board and then insert it again Remove the thermistor from ...

Page 280: ...ed Causes Defect of indoor unit thermistor R3T for gas pipe Defect of indoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P437 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Remove the thermistor from the indoor unit PC board and then insert it again Remove the thermistor from the ...

Page 281: ...s running Supposed Causes Defect of indoor unit thermistor R1T for air inlet Defect of indoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P437 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Remove the thermistor from the indoor unit PC board and then insert it again Remove the the...

Page 282: ...auses Defect of remote controller thermistor Defect of remote controller PC board Troubleshooting Note 1 How to delete the record of malfunction codes Press the Operate Stop button for 4 seconds and more while the malfunction code is displayed in the inspection mode Refer to Thermistor Resistance Temperature Characteristics table on P437 Clear the malfunction code history While in inspection mode ...

Page 283: ...e hardware section between the indoor unit and the outdoor unit are not normal Supposed Causes Defect of outdoor unit PC board A1P Defective connection of inside outside relay wires Troubleshooting Turn off the power once and turn on again Return to normal Check if inside outside relay wires of outdoor main PC board is disconnected YES Caution Be sure to turn off power switch before connect or dis...

Page 284: ...ct of the high pressure protection switch opens Malfunction Decision Conditions Error is generated when the HPS activation count reaches the number specific to the operation mode Reference Operating pressure of high pressure switch Operating pressure 4 0MPa Reset pressure 2 85MPa Supposed Causes Actuation of outdoor unit high pressure switch Defect of High pressure switch Defect of outdoor unit ma...

Page 285: ...gh pressure sensor The high pressure sensor is normal and the pressure detected with the PC board is also normal The high pressure has really become high CHECK 5 Referring to information on P372 remove the causes by which the high pressure has become high 1 Make a comparison between the voltage of the pressure sensor and that read by the pressure gauge As to the voltage of the pressure sensor make...

Page 286: ...P Method of Malfunction Detection Abnormality is detected by the pressure value with the low pressure sensor Malfunction Decision Conditions Error is generated when the low pressure is dropped under compressor operation Operating pressure 0 07MPa Supposed Causes Abnormal drop of low pressure Lower than 0 07MPa Defect of low pressure sensor Defect of outdoor unit PC board Stop valve is not opened ...

Page 287: ...mation on P373 remove the causes by which the low pressure has become low 1 Make a comparison between the voltage of the pressure sensor and that read by the pressure gauge As to the voltage of the pressure sensor make measurement of voltage at the connector and then convert it to pressure according to information on P439 2 Make measurement of voltage of the pressure sensor Caution Be sure to turn...

Page 288: ... signal from UVW line connected between the inverter and compressor and the malfunction is detected when any abnormality is observed in the phase current waveform Malfunction Decision Conditions This malfunction will be output when the inverter compressor motor does not start up even in forced startup mode Supposed Causes Inverter compressor lock High differential pressure 0 5MPa or more Incorrect...

Page 289: ... of wires Restart and check the operation Check if the condition occurs again Check if the start mode is in the high differential pressure not less than 0 5 MPa Check if the inverter output voltage between 3 phases is within 5V The insulation resistance of the compressor is low not more than 100kΩ YES YES U V W Check if the wiring has any error in mistake for inverter compressor Remove the connect...

Page 290: ... the possible factors may be chattering due to rough MgS contact 2 Abnormal case The current sensor value is 0 during STD compressor operation The current sensor value is more than 15 0A during STD compressor stop Is the stop valve open NO Obstacle exists around the air outlet YES Is the power supply voltage normal NO NO NO YES NO Is the magnetic switch K2M K3M normal 1 Is above wiring correct NO ...

Page 291: ...r of rotation detected by hole IC during the fan motor operation Malfunction Decision Conditions Overcurrent is detected for INVERTER PC board A2P or fan INVERTER PC board A5P System down is caused by 4 times of detection In the condition of fan motor rotation the number of rotation is below the fixed number for more than 6 seconds System down is caused by 4 times of detection Supposed Causes Fail...

Page 292: ...49 for how to check Check the connection status of the connectors Fan motor 1 relay connector or X1A X2A of compressor inverter PC board Fan motor 2 relay connector or X1A X2A of fan inverter PC board Check the color of relay connectors Fan motor 1 Both power supply wire and signal wire are all white Fan motor 2 Both power supply wire and signal wire are red in the PC board side and white in the m...

Page 293: ...nector of the fan motor NO Replace the corresponding fan motor YES Resistance value between the power supply wire terminal of fan motor and the motor frame metal is 1MΩ and below NO Replace the corresponding fan motor YES The resistance value between UVW phases of fan motor is out of balance or short circuit between UVW phases Check 1 Check fan motor connector power supply wire Check 2 Check fan m...

Page 294: ...Q8P 48P Method of Malfunction Detection Check disconnection of connector To be detected based on continuity existence of coil of electronic expansion valve Malfunction Decision Conditions No current is detected in the common COM when power supply is ON Supposed Causes Disconnection of connectors for electronic expansion valve Y1E Defect of moving part of electronic expansion valve Defect of outdoo...

Page 295: ...ronic expansion valve is connected Replace the connecting cable Replace outdoor unit PC board A1P YES YES NO Ensure correct connection External factor other than malfunction for example noise etc NO The coil resistance of electronic expansion valve isnormal Refer to 1 NO Check the electronic expansion valve corresponding to the malfunction code E9 in the monitor mode Refer to P248 249 for how to c...

Page 296: ...ty is detected according to the temperature detected by the discharge pipe temperature sensor Malfunction Decision Conditions When the discharge pipe temperature rises to an abnormally high level 135 C and above When the discharge pipe temperature rises suddenly 120 C and above for10 successive minutes Supposed Causes Faulty discharge pipe temperature sensor Faulty connection of discharge pipe tem...

Page 297: ...ES Discharge pipe thermister is normal and the temperature detection of the main PC board is also normal Actually the temperature of discharge pipe is high Check 3 Remove the factor of overheat operation referring to P370 Service Checker Connect the service checker to compare the temperature of discharge pipe by using service checker with actual measurement value of discharge pipe thermister Refer...

Page 298: ...gnment of the outside air thermistor Misalignment of the heat exchanging deicer thermistor Misalignment of the liquid pipe thermistor Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P437 V2797 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Are the above thermistor installed on pipes correctly Check...

Page 299: ... unit Method of Malfunction Detection This malfunction is detected by whether or not all coils of the electronic expansion valve have continuity Malfunction Decision Conditions When the power supply turns ON there is no currents pass through the common COM Supposed Causes Connector disconnected from the electronic expansion valve Faulty coil of the electronic expansion valve Faulty PC board of the...

Page 300: ...he connector for the electronic expansion valve of the PC board concerned properly connected NO YES Is the resistance of the electronic expansion valve coil normal See 1 YES NO NO YES Turn OFF the power supply once and then ON again Does the power supply normally come back ON While in monitor mode identify an electronic expansion valve subject to the Malfunction Code F9 For checking procedure refe...

Page 301: ...7 Applicable Models REYQ8P 48P Method of Malfunction Detection Detection of abnormal signal from fan motor Malfunction Decision Conditions In case of detection of abnormal signal at starting fan motor Supposed Causes Abnormal fan motor signal circuit malfunction Broken short or disconnection connector of fan motor connection cable Fan Inverter PC board malfunction A2P ...

Page 302: ...are balanced Check the connector of the fan motor 1 Cut the power supply off 1 Check procedure for fan motor connector 1 Power OFF the fan motor 2 Remove the connector X2A or X4A on the PC board to measure the following resistance value Judgment criteria resistance value between each phase is within 20 Connector for signal wires X2A or X4A Check the fan motor corresponding to the malfunction code ...

Page 303: ...r connection Defect of thermistor R1T for outdoor air Defect of outdoor unit PC board A1P Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P437 V3070 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Resistance is normal when measured after disconnecting the thermistor R1T from the outdoor unit PC boar...

Page 304: ...y be occurred Is the current sensor mounted on the T phase A6P and R phase A8P wire Are the current sensors inversely connected to two STD compressors Is the connector for current sensor connected to X25A X26A on outdoor unit PC board A1P Replace current sensor or outdoor unit PC board Connect the connector and operate unit again NO NO Mount the current sensor correctly and operate unit again YES ...

Page 305: ...ipe Defect of outdoor unit PC board A1P Defect of thermistor connection Troubleshooting The alarm indicator is displayed when the fan is being used also Refer to Thermistor Resistance Temperature Characteristics table on P437 V3072 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Resistance is normal when measured after disconnecting t...

Page 306: ...ion of thermistor Defective thermistor Defective outdoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P437 V3070 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Resistance is normal when measured after disconnecting the thermistor R2T or R11T from the outdoor unit PC board 1 8kΩ to ...

Page 307: ...r R10T for outdoor unit suction pipe Defect of outdoor unit PC board A1P Defect of thermistor connection Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P437 V3073 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Resistance is normal when measured after dis connecting the thermistor R8T or R10T from ...

Page 308: ...r R4T or R12T for outdoor unit coil Defect of outdoor unit PC board A1P Defect of thermistor connection Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P437 V3074 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Resistance is normal when measured after disconnecting the thermistor R4T or R12T from th...

Page 309: ... Faulty outdoor unit PC board Defect of thermistor connection Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P437 V3075 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Is the resistance measured after removing the thermistor R6T R9T or R14T from outdoor unit PC board normal 1 8kΩ to 800kΩ Replace o...

Page 310: ... Faulty outdoor unit PC board Defect of thermistor connection Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P437 V3075 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Is the resistance measured after removing the thermistor R7T or R15T from outdoor unit PC board normal 1 8kΩ to 800kΩ Replace outdo...

Page 311: ...ng heat exchanger gas pipe thermistor R5T or R13T Faulty outdoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P437 V3075 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Is the resistance measured after removing the thermistor R5T or R13T from outdoor unit PC board normal 1 8kΩ to 80...

Page 312: ...ction Detection Malfunction is detected from the pressure detected by the high pressure sensor Malfunction Decision Conditions When the high pressure sensor is short circuit or open circuit Not less than 4 22MPa or 0 01MPa and below Supposed Causes Defect of high pressure sensor system Connection of low pressure sensor with wrong connection Defect of outdoor unit PC board Defective connection of h...

Page 313: ...he main PC board Replace the high pressure sensor YES NO Replace the main PC board NO Replace the high pressure sensor YES NO Are the characteristics of the high pressure sensor normal Make a comparison between the voltage characteristics 2 and the gauge pressure YES If the PC board pressure detection normal Make a comparison between the checker pressure data and the voltage characteristics 2 1 Se...

Page 314: ...r Troubleshooting V2808 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Replace the main PC board Replace the low pressure sensor YES NO Replace the main PC board NO Replace the low pressure sensor YES NO Are the characteristics of the low pressure sensor normal Make a comparison between the voltage characteristics 1 and the gauge pre...

Page 315: ...Troubleshooting by Indication on the Remote Controller SiBE37 701 304 Troubleshooting 1 Voltage measurement point 2 Refer to Pressure Sensor Pressure Voltage Characteristics table on P439 ...

Page 316: ...cted based on the current value during waveform output before starting compressor Malfunction is detected based on the value from current sensor during synchronous operation when starting the unit Malfunction Decision Conditions Overcurrent OCP flows during waveform output Malfunction of current sensor during synchronous operation IPM failure Supposed Causes Inverter PC board A2P z IPM failure z C...

Page 317: ...NO YES YES NO Replace the lead wires Replace the compressor and compressor inverter PC board A2P at the same time Replace the inverter PC board A2P Replace the compressor inverter PC board A2P and fan inverter PC board A5P Replace the inverter PC board A2P Does the power supply normally come back ON Is the individual system applied to the outdoor unit YES NO It is supposed that the malfunction res...

Page 318: ...e Controller Display L4 Applicable Models REYQ8P 48P Method of Malfunction Detection Fin temperature is detected by the thermistor of the radiation fin Malfunction Decision Conditions When the temperature of the inverter radiation fin increases above 87 C Supposed Causes Actuation of fin thermal Actuates above 87 C Defect of inverter PC board Defect of fin thermistor ...

Page 319: ...ontrol PC board 3 While in monitor mode check the outdoor unit concerned Individual system Multi system Is the thermistor resistance normal NO YES Replace the thermistor Does the malfunction recur when the power supply turns ON to start the compressor NO Replace the compressor inverter PC board Continue operation It is supposed that the radiation fin temperature became high due to some field facto...

Page 320: ...SiBE37 701 Troubleshooting by Indication on the Remote Controller Troubleshooting 309 Inverter PC board for compressor Refer to Thermistor Resistance Temperature Characteristics table on P437 ...

Page 321: ...REYQ8P 48P Method of Malfunction Detection Malfunction is detected from current flowing in the power transistor Malfunction Decision Conditions When an excessive current flows in the power transistor Instantaneous overcurrent also causes activation Supposed Causes Defect of compressor coil disconnected defective insulation Compressor start up malfunction mechanical lock Defect of inverter PC board...

Page 322: ...S YES NO NO YES YES YES YES NO NO Power OFF Check if the stop valve is open Check if the compressor lead wires are normal Check if the wiring and connection to the compressor are normal Insulation resistance of the compressor is 100 kΩ or below Check 4 Check if the power transistor is normal Failure occurs again after restarting the unit Compressor coils are disconnected YES Replace inverter compr...

Page 323: ... 48P Method of Malfunction Detection Malfunction is detected by current flowing in the power transistor Malfunction Decision Conditions When overload in the compressor is detected Inverter secondary current 16 1A 1 19 0A and over continues for 5 seconds 2 16 1A and over continues for 260 seconds Supposed Causes Compressor overload Compressor coil disconnected Defect of inverter PC board Faulty com...

Page 324: ...e compressor is 100 kΩ or below Compressor coils are disconnected Connect the compressor lead wires then restart the operation Check 4 Check if the power transistor is normal Malfunction code L8 is displayed again Checkifthe pressuredifferencebetweenhigh pressureandlowpressurebefore restartingis0 2MPa orbelow YES YES Open the stop valve Replace compressor lead wires Correct the wiring and connecti...

Page 325: ... Models REYQ8P 48P Method of Malfunction Detection Detect the failure based on the signal waveform of the compressor Malfunction Decision Conditions Starting the compressor does not complete Supposed Causes Failure to open the stop valve Defective compressor Wiring connection error to the compressor Large pressure difference before starting the compressor Defective inverter PC board ...

Page 326: ... of the compressor is more than 100kΩ Check if the compressor lead wires are disconnected Go on to the next page Starting failure due to aged operation Charge a right amount of refrigerant Open the stop valve Cancel the sleeping state of refrigerant Cancel the sleeping state of refrigerant Fix the compressor lead wire Correct the wiring then supply power to restart NO NO NO YES NO YES NO YES YES Y...

Page 327: ...or more than 6 hours Check if the insulation resistance of the compressor is 100kΩ or over Broken inside the compressor Cancel the sleeping state of refrigerant Replace the inverter compressor Replace the inverter compressor Replace the compressor inverter PC board Recheck the compressor refrigerant circuit NO NO NO YES NO YES YES YES Check 4 Check if the power transistor is normal Check 4 Referri...

Page 328: ...e between inverter PC board and control PC board by micro computer Malfunction Decision Conditions When the correct communication is not conducted in certain period Supposed Causes Malfunction of connection between the inverter PC board and outdoor main PC board Defect of outdoor main PC board transmission section Defect of inverter PC board Defect of noise filter Faulty fan inverter Incorrect typ...

Page 329: ...e to turn off power switch before connect or disconnect connector or parts damage may be occurred Are the connectors of the inverter PC board main PC board and sub PC board all securely connected Is the type of the inverter PC board correct 1 The INV compressor has insulation resistance of not more than 100kΩ The fan motor has insulation resistance of not more than 1MΩ Replace it with a correct PC...

Page 330: ...yed malfunction code Not the LC malfunction Check the malfunction code again Replace the main PC board A1P Continue operation It is supposed that the malfunction results from causes such as instantaneous power failure Replace the inverter PC board A4P If the replaced PC board has significant damage the compressor is probably get faulty In this case carry out inspections on the compressor again NO ...

Page 331: ...nverter Consequently the increased ripple is detected Malfunction Decision Conditions When the resistance value of thermistor becomes a value equivalent to open or short circuited status Malfunction is not decided while the unit operation is continued P1 will be displayed by pressing the inspection button When the amplitude of the ripple exceeding a certain value is detected for consecutive 4 minu...

Page 332: ... voltage imbalance Even if the power supply voltage is not unbalanced when measuring it there are many cases where it gets unbalanced during nighttime around 6 00PM to 10 00PM No abnormalities are observed in the power supply but the imbalance in voltage recurs Explanation for users Fix power supply voltage imbalance Replace the inverter PC board YES YES NO Imbalance in supplied voltage is in exce...

Page 333: ...ion button Supposed Causes Defect of radiator fin temperature sensor Defect of inverter PC board Faulty inverter compressor Faulty fan motor Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Replace the inverter PC board NO YES NO NO YES NO Measure resistance value of the radiation fin thermistor Is the thermistor resist...

Page 334: ...SiBE37 701 Troubleshooting by Indication on the Remote Controller Troubleshooting 323 Inverter PC board for compressor Refer to Thermistor Resistance Temperature Characteristics table on P437 ...

Page 335: ...ontroller Display PJ Applicable Models REYQ8P 48P Method of Malfunction Detection This malfunction is detected according to communications with the inverter Malfunction Decision Conditions Make judgment according to communication data on whether or not the type of the inverter PC board is correct Supposed Causes Faulty or no field setting after replacing main PC board Mismatching of type of PC boa...

Page 336: ...replace the control PC board 1 A1P or the control PC board 3 A3P With multi systems replace the main PC board A1P YES YES YES YES NO NO NO Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Make correct setting of DIP switch For setting procedure refer to information on page 182 Replace it with the correct compressor inverter PC board Wa...

Page 337: ...changer Malfunction Decision Conditions In cooling mode Low pressure becomes 0 1MPa or below In heating mode The degree of superheat of suction gas becomes 20 degrees and over SH Ts1 Te Ts1 Suction pipe temperature detected by thermistor Te Saturated temperature corresponding to low pressure Malfunction is not determined The unit continues operation Supposed Causes Gas shortage or refrigerant clog...

Page 338: ...Replace the thermister Replace the main PC board With individual systems replace the control PC board 1 A1P or the control PC board 3 A3P With multi systems replace the main PC board A1P NO NO YES Reset the operation using the remote controller then restart Set up a pressure gauge at the service port on the low pressure side Reset the operation using the remote controller then restart 3 Compare th...

Page 339: ...ply open phase Defect of outdoor PC board A1P Troubleshooting V2820 Operation is normal if one place of power supply line phase is replaced Fix the open phase Requires inspection of field power supply section Reverse phase Counter measure of the problem is completed by phase replacement Replace outdoor unit PC board A1P With individual systems replace the control PC board 1 A1P or the control PC b...

Page 340: ... capacitor built in the inverter and power supply voltage Malfunction Decision Conditions When the voltage aforementioned is not less than 780V or not more than 320V or when the current limiting voltage does not reach 200V or more or exceeds 740V Supposed Causes Power supply insufficient Instantaneous power failure Open phase Defect of inverter PC board Defect of outdoor control PC board Main circ...

Page 341: ...re of the PC board Even if the PC board is replaced it may cause failure again To avoid that recheck the compressor for ground and for any broken wires Furthermore even after the completion of PC board replacement check the compressor Replace the fan driver PC board Observe the conditions of the PC board NO NO YES YES YES YES YES YES NO NO NO NO NO NO Check for power supply voltage Voltage between...

Page 342: ...place it if necessary End of measures The malfunction may temporarily result from on site causes Causes Instantaneous power failure open phase noises or else YES YES YES YES YES NO NO NO NO NO Check for connector connections Remove and insert the connectors shown below Furthermore check the connectors for terminal conditions and continuity X1M power receiving terminal X400A A3P A3P X401A X10A A4P ...

Page 343: ... operation is not executed Troubleshooting V3052 Performs the chech operation again and completes the check operation When a leakage detection function is needed normal operation of charging refrigerant must be completed And then start once again and complete a check operation Has the check operation performed on Outdoor unit PC board Press and hold BS4 on the outdoor master PC board for 5 seconds...

Page 344: ...Check if the transmission between indoor unit and outdoor unit is correctly executed using microcomputer Malfunction Decision Conditions When transmission is not carried out normally for a certain amount of time Supposed Causes Indoor to outdoor outdoor to outdoor transmission wiring F1 F2 disconnection short circuit or wrong wiring Outdoor unit power supply is OFF System address doesn t match Def...

Page 345: ...tage between RS terminals on the outdoor unit PC board is 200V The fuse on the outdoor unit PC board is blown Check if the normal condition monitor for the microcomputer HAP on the outdoor unit PC board blinks Check if the LED in preparation mode H2P on the outdoor unit PC board blink Lights do not go out for 12 minutes or more Check if the indoor outdoor outdoor outdoor connecting wires are norma...

Page 346: ...e indication in 2 minutes and over The indoor units PC board indicating U9 are normal Check the indoor units in the other circuits to diagnose failure according to the corresponding malfunction codes Start operation of all the indoor units Check if all the units indicate U9 Check if more than 2 minutes passed since U9 was indicated Caution Be sure to turn off power switch before connect or disconn...

Page 347: ...ollers Defect of indoor unit PC board Defect of remote controller PC board Malfunction of transmission caused by noise Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred V2823 NO NO NO YES NO Replace indoor unit PC board Set one remote controller to SUB turn the power supply off once and then back on There is possibility ...

Page 348: ...Malfunction Decision Conditions When transmission is not carried out normally for a certain amount of time Supposed Causes Connection error in connecting wires between outdoor unit and outdoor unit outside control adapter Connection error in connecting wires across outdoor units Setting error in switching cooling heating Integrated address setting error for cooling heating function unit outdoor un...

Page 349: ...Go on to the Diagnosis Flow 5 Multi connection REYP units Go on to the Diagnosis Flow 6 Erroneous manual address settings of the slave units 1 and 2 Go on to the Diagnosis Flow 7 Connection of four or more outdoor units to the same circuit Go on to the Diagnosis Flow 8 Faulty auto address of the slave units 1 and 2 Check the LED lamps for Check 3 corresponding to the malfunction code U7 and for Ch...

Page 350: ...e the outdoor unit main PC board NO YES NO Correct the connecting wiring with the outside control adapter Diagnosis Flow 1 Check if any disconnection or connection error is detected in connecting wires with outside control adapter Supply power to the outdoor unit Check if power is supplied to the outdoor units Check if the normal condition monitor LED for the outdoor unit PC board blinks Check if ...

Page 351: ...l condition monitor LED for the outdoor unit main PC board blinks Check if the outdoor unit is powered on Check if the power supply wire for the outside control adapter is connected to 5V supply line Check if the normal condition monitor LED for the outside control adapter blinks Set the cooling heating switch of the outside control adapter to individual Then check if the failure occurs again YES ...

Page 352: ...tus ofconnectingwiresofMulti Slave2withoutdoormulti Checkifthewiring isdisconnectedorisabout tobedisconnected Check if the outdoor unit REYQ8 16PY1 is connected to multi system Check 3 Check theconnectionstatus ofconnectingwiresofMultiSlave1 withoutdoormulti Checkifthewiring is disconnectedorisaboutto bedisconnected Replace the outdoor unit main PC board of the Multi Slave 1 Correct the connecting...

Page 353: ...f the outdoor unit Correct the connecting wires of the outdoor multi and then reset the power supply Diagnosis Flow 7 Diagnosis Flow 8 Check the connection status of one of the connecting wires of Outdoor Multi Check if the wiring is broken or disconnected YES NO Correct the manual address settings For detail refer to information in the AirNet Installation Manual Are manual address settings of the...

Page 354: ...t continue for specified period Supposed Causes Malfunction of transmission between main and sub remote controller Connection between sub remote controllers Defect of remote controller PC board Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred V2825 SS1 of both remote controllers is set to SUB Set SS1 to MAIN the power s...

Page 355: ...ssion within or outside of other system Malfunction of electronic expansion valve in indoor unit of other system Defect of PC board of indoor unit in other system Improper connection of transmission wiring between indoor and outdoor unit Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred The outdoor unit PC board indicate...

Page 356: ...igerant between indoor and outdoor units The number of indoor units is out of the allowable range Incorrect signals are transmitted among the indoor unit BS unit and outdoor unit Malfunction Decision Conditions The malfunction decision is made as soon as either of the abnormalities aforementioned is detected Supposed Causes Excess of connected indoor units Defect of outdoor unit PC board A1P Misma...

Page 357: ... 3 Check 4 To Diagnosis Flow 3 Faulty combination of outdoor units Check 3 Check 4 Check 3 Check 4 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred To Diagnosis Flow 4 Faulty wiring in units dedicated to multi connections Check 3 Check 4 To Diagnosis Flow 5 Connection of erroneous models of BS units Check 3 Check 4 To Diagnosis Flow 6 ...

Page 358: ...the main PC board of the outdoor unit With individual systems replace the control PC board 1 A1P With multi systems replace the main PC board A1P Match the refrigerant types of the outdoor unit and the indoor unit Check 3 Check 4 Diagnosis Flow 1 Check 3 Check 4 Diagnosis Flow 2 The number of indoor units connected to the same refrigerant circurt system should not be more than 64 units Check if th...

Page 359: ...ts PC board Check if the unit is not connected to outdoor units of different models Check if the outdoor unit PC board is replaced with PC board for spare parts Check if the spare parts PC board setting is correct Check 3 Check 3 Check 4 Check 4 NO YES Is a correct substitute PC board procured Replace it with the correct substitute PC board NO YES Correct the connection wirings Replace the main PC...

Page 360: ...l BSVQ P Replace the outdoor unit PC board as shown below With individual systems replace the control PC board 1 A1P With multi systems replace the main PC board A1P Is the model BSVQ P connected Check 3 Check 3 Check 4 Check 4 YES NO Correct the wiring Replace the outdoor unit PC board as shown below With individual systems replace the control PC board 1 A1P With multi systems replace the main PC...

Page 361: ...ect connector or parts damage may be occurred Diagnosis Flow 7 Diagnosis Flow 8 Correct the connection wiring Replace the BS unit PC board concerned Is the wiring between the BS units correct Check 3 Check 3 Check 4 Check 4 YES NO Correct the connection wiring Replace the indoor unit or BS unit PC board Is the connection wiring between the indoor unit and the BS unit correct ...

Page 362: ...it detects the same address as that of its own on any other indoor unit Malfunction Decision Conditions The malfunction decision is made as soon as the abnormality aforementioned is detected Supposed Causes Address duplication of centralized controller Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Make setting change...

Page 363: ...tection Microcomputer checks if transmission between indoor unit and centralized controller is normal Malfunction Decision Conditions When transmission is not carried out normally for a certain amount of time Supposed Causes Malfunction of transmission between optional controllers for centralized control and indoor unit Connector for setting master controller is disconnected or disconnection of co...

Page 364: ...g length types of cables and wires number of units connected and others If no problems replace the indoor unit PC board NO YES Continued to A on the following page YES Check the indoor unit for which UE is displayed Is the the transmission malfunction UE caused on all indoor units Is the power supply of the indoor unit on which the UE occurred turned ON Has the setting of central control group No ...

Page 365: ...to P372 A Has the master unit central setting connector been connected NO Correct the wiring Abnormal Correct the connection of the connector NO YES YES Check the transmission wiring with the master unit central equipment for any broken wire For details refer to information in the Procedure for checking broken wires section Refer to P372 Disconnect the transmission wiring of the master unit centra...

Page 366: ...k operation Defect of indoor unit PC board Stop valve is left in closed Troubleshooting Note Wiring check operation may not be successful if carried out after the outdoor unit has been off for more than 12 hours or if it is not carried out after running all connected indoor units in the fan mode for at least an hour Caution Be sure to turn off power switch before connect or disconnect connector or...

Page 367: ... indoor units REYQ8P 48P Method of Malfunction Detection Detect an indoor unit with no address setting Malfunction Decision Conditions The malfunction decision is made as soon as the abnormality aforementioned is detected Supposed Causes Improper connection of transmission wiring between indoor outdoor units and outdoor outdoor units Defect of indoor unit PC board Defect of outdoor unit main PC bo...

Page 368: ...ect the outdoor outdoor unit transmission wiring to create the one system status and then check whether or not the system is normal NO Does a UH malfunction occur for all indoor units in the system YES NO Does a malfunction occur even after 12 minutes elapses from the time when electricity is introduced to indoor and outdoor units YES Replace indoor unit PC board Replace outdoor unit PC board A1P ...

Page 369: ... at the same time Supposed Causes Defect of central remote controller PC board Defect of Intelligent Touch Controller PC board Defect of Schedule timer PC board Troubleshooting Replace the central remote controller Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Is the M1 displayed again Replace the central equipment Central equipment...

Page 370: ...the power supply of the central equipment Replace Ve Up controller Set the Reset switch located inside of equipment SS1 been set to the Normal side Replace the central equipment Correct the wiring Some central equipment gets faulty Conduct RUN STOP operations on every central equipment and then replace the central equipment that cannot control the indoor unit NO Have power supplies to every centra...

Page 371: ...unction Detection Detect the malfunction according to DIII NET transmission data Malfunction Decision Conditions When the schedule timer is set to individual use mode other central component is present When multiple master controller are present When the remote control adapter is present Supposed Causes Improper combination of optional controllers for centralized control More than one master contr...

Page 372: ...entral connector is connected and then reset power supplies of every central equipment Disconnect the master unit central setting connector and connect this connector to different central equipment and then reset power supplies of every central equipment Central equipment to which the master unit central setting connector is connected at the time when the malfunction code is cleared is faulty Repl...

Page 373: ...very central equipment Reset the power supplies of every central equipment Replace the central equipment Central equipment Normal It is supposed that the malfunction results from external factors e g noises from other equipment NO YES YES NO Did the malfunction occur while in the first test run using the intelligent Touch controller Is the Master Slave setting of the central equipment correct Was ...

Page 374: ...of indoor units Unified ON OFF controller Method of Malfunction Detection Detect the malfunction according to DIII NET transmission data Malfunction Decision Conditions Supposed Causes Malfunction of transmission between optional central controller and indoor unit Connector for setting master controller is disconnected Defect of unified ON OFF controller PC board Defect of indoor unit PC board Mal...

Page 375: ...ster controller disconnected Set the group No correctly Replace the central PC board Fix the wiring correctly Fix the wiring correctly Connect the connector correctly Replace the central PC board Reset power supply for all optional controllers for centralized control simultaneously NO YES NO YES NO NO NO Turn the power supply of the indoor unit on YES NO YES YES YES YES NO Has a once connected ind...

Page 376: ...lized controller which was connected once shows no response The control ranges are overlapped When multiple master central controller are present When the schedule timer is set to individual use mode other central controller is present When the wiring adaptor for electrical appendices is present Supposed Causes Address duplication of optional controllers for centralized control Improper combinatio...

Page 377: ...or schedule timer NO YES YES NO NO Fix the wiring correctly Set reset switch to normal NO NO YES YES YES Is the power supply turned on for all optional controllers for centralized control Reset power supply simultaneously for all optional controllers for centralized control NO YES Has a once connected optional controller for centralized control been disconnected or its address changed Is the centr...

Page 378: ...ntroller for centralized control and reset the power supply for all optional controllers for centralized control simultaneously Disconnect the connector for setting master controller from the master controller connect to another optional controller for centralized control and simultaneously reset all optional controllers for centralized control again The controller connected by the connector for s...

Page 379: ...ress group No is not set for indoor unit Improper control range setting switch Improper wiring of transmission wiring Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred V2844 Is the control range setting switch set correctly Is the transmission wiring disconnected or wired incorrectly Replace the unified ON OFF controller...

Page 380: ...Turn off the power supply 2 Measure the resistance between Vcc and each phase of U V W and GND and each phase at the motor side connectors five core wire to check that the values are balanced within the range of 20 while connector or relay connector is disconnected Furthermore to use a multiple meter for measurement connect the probe of negative pole to Vcc and that of positive pole to GND Red Whi...

Page 381: ...mister resistance property is normal Check if the piping temperature connected to the 4 way switch valve is normal Check if the pressure value given by the service checker corresponding to actual measurement value by the sensor Check if coil resistance and insulation are normal Check if the connector is connected properly Check if the thermister resistance property is normal Check if the connector...

Page 382: ...ue mode in the range of multiplying 1kΩ Point of Measurement Judgment Criteria Remarks No 15kΩ and above including 2 15kΩ 2 15kΩ Due to condenser charge and so on resistance measurement may require some time P2 P2 P2 U V W N3 N3 N3 U V W 1 2 3 4 5 6 7 8 9 10 11 12 P2 P2 P2 U V W U V W N3 N3 N3 Point of Measurement Judgment Criteria Remarks No 0 3 0 7V 1 2V and over 1 2V and over Due to condenser c...

Page 383: ...ent of the pressure sensor In cooling High suction air temperature of the condenser In heating High suction air temperature of outdoor unit Short circuit High ambient temperature Is the suction air temperature not more than 43 C Is the outdoor temperature not more than 43 C High suction air temperature of indoor unit High ambient temperature Is the suction air temperature not more than 27 C Is the...

Page 384: ...ure of the evaporator In heating Low suction air temperature of indoor unit Short circuit Is the suction air temperature not less than 14 C Is the indoor temperature not more than 14 C Low ambient temperature Faulty suction air thermistor of indoor unit Is the connector properly connected Are the thermistor resistance characteristics normal Low suction air temperature of outdoor unit Is the outdoo...

Page 385: ...ce with continuity 2 Procedure for checking indoor outdoor unit transmission wiring for broken wires for checking the indoor outdoor unit transmission wiring of the Outdoor Unit C for broken wires Turn OFF the power supply to all equipment short circuit between the indoor outdoor unit terminal parts F1 and F2 in the Outdoor Unit C and then conduct continuity checks between the transmission wirings...

Page 386: ...dule timer are not available for combined use 2 The intelligent Touch controller central remote controller and the unified ON OFF controller have been set to Provided with the master unit central setting connector at the factory The schedule timer has been set to Not provided with the master unit central setting connector at the factory which is attached to the casing of the main unit Pattern Cent...

Page 387: ...o do with those described in the list of Setting of master unit central setting connector 1 2 3 4 Pattern 1 00 4 15 Master Slave 5 00 8 15 Master Slave 1 00 4 15 Master Slave 5 00 8 15 Master Slave CRC Master CRC Master CRC Slave CRC Slave CRC Master CRC Slave Intelligent Touch controller Master Intelligent Touch controller Slave CRC Master Intelligent Touch controller Slave Intelligent Touch cont...

Page 388: ...tion Refer to information in the Check 11 section Are the voltage characteristics normal Is the connector correctly connected Does the thermistor have normal resistance characteristics Is the pressure reading of the service checker corresponding to the actual measurement of the sensor Can the fan motor be rotated by hand Does the fan motor coil have normal resistance and insulation Does the air fi...

Page 389: ...perature of outlet air passing through the supercooled section becomes lower Cooling High pressure Low pressure Frequency High pressure drooping control LP is maintained at a constant level To maintain LP frequency increases under the capacity control HP gradually rises with increase in frequency Frequency comes to the minimum level Supercooled degree becomes higher Liquid connection pipe temperat...

Page 390: ...s larger Either of the motorized valves becomes fully open Frequency comes to the minimum level Fan control is activated for HP protection under cooling control at low outdoor temperature i e the fan is hunting at HP HP drops with decrease in compressor capacity If frequency comes to the minimum level LP cannot be maintained LP rises as the opening degree of the indoor unit motorized valve becomes...

Page 391: ...of 100 7kPa or less for a period of one hour or more and then check to be sure that the vacuum gauge reading does not rise If the reading rises moisture may have remained in the system or refrigerant leakage may have been caused Refrigerant charge Purge air from the manifold gauge connection hoses and then charge a necessary quantity of refrigerant Special vacuuming and dehydration In case moistur...

Page 392: ...sive oil or refrigerant Faulty inverter PC board E5 Inverter compressor lock The compressor is in the locked status does not rotate Faulty compressor L4 Radiator fin temperature rise The radiator fin temperature reaches 87 C or more while in operation Malfunction of fan Running in overload for an extended period of time Faulty inverter PC board U2 Power supply voltage error The inverter power supp...

Page 393: ... or more Transmission error Overcurrent of inverter compressor When transmissions between the main PC board and the inverter PC board are not normal Main Control PC board Weak current part Heavy current part Power transmission etc Inverter PC board Compressor Power supply 3 phase 400VAC Current Time L5 L8 L8 Instantaneous overcurrent Compressor overcurrent Electronic thermal 2 Compressor overcurre...

Page 394: ...tdoor Unit 418 3 2 Indoor Side 422 4 Option List 428 4 1 Option List of Controllers 428 4 2 Option Lists Outdoor Unit 430 5 Piping Installation Point 431 5 1 Piping Installation Point 431 5 2 The Example of a Wrong Pattern 432 6 Example of connection 433 7 Thermistor Resistance Temperature Characteristics 437 8 Pressure Sensor 439 9 Method of Checking the Inverter s Power Transistors and Diode Mod...

Page 395: ...Piping Diagrams SiBE37 701 384 Appendix 1 Piping Diagrams 1 1 Outdoor Unit REYQ8P 10P 12P 3D058154B S1NPH S2NPL ...

Page 396: ...SiBE37 701 Piping Diagrams Appendix 385 REYQ14P 16P 3D058153B S2NPL S1NPH ...

Page 397: ...Piping Diagrams SiBE37 701 386 Appendix REMQ8P 3D057743 ...

Page 398: ...SiBE37 701 Piping Diagrams Appendix 387 REMQ10P 12P 3D057742 ...

Page 399: ...Piping Diagrams SiBE37 701 388 Appendix REMQ14P 16P 3D057741 ...

Page 400: ...SiBE37 701 Piping Diagrams Appendix 389 1 2 Indoor Unit FXFQ P ...

Page 401: ...Piping Diagrams SiBE37 701 390 Appendix FXZQ Refrigerant pipe connection port diameters mm Model Gas Liquid FXZQ20M 25M 32M 40M 50M φ12 7 φ6 4 ...

Page 402: ...XDQ25 25 M FXSQ Refrigerant pipe connection port diameters C 3TW25515 1 C 3TW21175 1C Model Gas Liquid FXSQ20 25 32 40 50 φ12 70 φ6 35 FXSQ63 80 100 125 φ15 90 φ9 52 FXCQ20 25 32 40 50 φ12 70 φ6 35 FXCQ63 80 125 φ15 90 φ9 52 FXDQ20 25 φ12 70 φ6 35 ...

Page 403: ...ic expansion valve Y1E Used for gas superheated degree control while in cooling operation or subcooled degree control while in heating operation 2 Suction air temperature thermistor R1T Used for thermostat control 3 Liquid pipe R2T Used for gas superheated degree control while in cooling operation or subcooled degree control while in heating operation 4 Gas pipe R3T Used for gas superheated degree...

Page 404: ...SiBE37 701 Piping Diagrams Appendix 393 FXDQ NA P Refrigerant pipe connection port diameters 4D043864J mm Model Gas Liquid FXDQ20NA P 25NA P 32NA P 40NA 50NAVE φ12 7 φ6 4 FXDQ63NAVE φ15 9 φ9 5 ...

Page 405: ...Piping Diagrams SiBE37 701 394 Appendix 1 3 BS Unit 4D057985A ...

Page 406: ...2U F1U F1U F400U K1 K2 K3 K4 K2M H1P 8P HAP K1R K1R K2R K3R K3R K4R K5R K5R K5R K6R K7R K8R K11R K11R L1R M1C M2C M1F M2F PS Q1RP R10 R50 R59 R90 R95 R1T R1T R2T R31T R32T R4T R5T R6T R7T R8T R9T R10T R11T R12T R13T R14T R15T S1NPH S2NPL S1PH S2PH T1A V1CP V1R V1R V2R X1M X1M X2M X1A X9A Y1E Y2E Y3E Y4E Y5E Y1S Y2S Y3S Y4S Y5S Y6S Y7S Y8S Y9S Y10S Z1C 8C Z1F X7A X9A X37A PRINTED CIRCUIT BOARD MAIN...

Page 407: ...BLU ELECTRONIC EXPANSION VALVE CHARGE ELECTRONIC EXPANSION VALVE SUBCOOL 2 SOLENOID VALVE RMTG SOLENOID VALVE 4 WAY VALVE HEAT EXC 1 SOLENOID VALVE RMTL SOLENOID VALVE HOT GAS SOLENOID VALVE EV BYPASS 1 SOLENOID VALVE RMTT SOLENOID VALVE RMTO SOLENOID VALVE 4 WAY VALVE PIPE SOLENOID VALVE 4 WAY VALVE HEAT EXC 2 SOLENOID VALVE EV BYPASS 2 NOISE FILTER FERRITE CORE NOISE FILTER WITH SURGE ABSORBER A...

Page 408: ...ISE FILTER PRINTED CIRCUIT BOARD INV PRINTED CIRCUIT BOARD FAN PUSH BUTTON SWITCH MODE SET RETURN TEST RESET CAPACITOR CAPACITOR CRANKCASE HEATER FUSE T 3 15A 250V A1P FUSE T 3 15A 250V A2P FUSE 8A DC650V A5P FUSE T 6 3A 250V PILOT LAMP SERVICE MONITOR ORANGE H2P PREPARE TEST FLICKERING MALFUNCTION DETECTION LIGHT UP PILOT LAMP SERVICE MONITOR GREEN A1P A2P MAGNETIC RELAY MAGNETIC CONTACTOR M1C WH...

Page 409: ...A6P BS1 5 C1 C63 C66 E1HC E2HC F1U F2U F1U F1U F400U H1P 8P HAP K1 K2 K3 K4 K2M K1R K1R K2R K3R K3R K4R K5R K5R K6R K7R K8R K11R L1R M1C M2C M1F PS Q1RP R10 PRINTED CIRCUIT BOARD MAIN PRINTED CIRCUIT BOARD SUB PRINTED CIRCUIT BOARD NOISE FILTER PRINTED CIRCUIT BOARD INV PRINTED CIRCUIT BOARD FAN PRINTED CIRCUIT BOARD CURRENT SENSOR PUSH BUTTON SWITCH MODE SET RETURN TEST RESET CAPACITOR CAPACITOR ...

Page 410: ...LTI UNIT F1 Q2 F2 TO IN D UNIT TO OUT D UNIT Q1 H6P H8P H4P BS3 H5P BS1 H1P BS5 HAP H7P BS2 BS4 H3P H2P X1A 4A X5A X1M X1M Y1E Y2E Y3E Y1S Y2S Y3S Y4S Y5S Y6S Y7S Z1C 10C Z1F CONNECTOR FOR OPTIONAL PARTS X7A X9A R50 R59 R90 R95 R1T R1T R2T R31 33T R4T R5T R6T R7T R8T R9T S1NPH S2NPL S1PH 3PH T1A V1CP V1R V1R V2R K3 K4 K2M K3M K1R K2R K1R K2R K3R K4R K5R K5R K6R K7R K8R K9R K11R L1R M1C 3C M1F M2F ...

Page 411: ...ents must be provided by licensed electrician FUSE N L2 SWITCH N SWITCH FUSE L1 L2L3 N L L SWITCH L1 MAIN SWITCH FUSE SWITCH N SWITCH N L L3 6 Unit shall be grounded in compliance with the applicable local and national codes 7 Wiring shown are general points of connection guides only and are not intended for or to include all details for a specific installation 8 Be sure to install the switch and ...

Page 412: ...SSION LINE 2 WIRES CABLE POWER LINE FUSE SWITCH FUSE SWITCH FUSE SWITCH FUSE SWITCH FUSE SWITCH FUSE SWITCH FUSE SWITCH FUSE SWITCH L N INDOOR UNITS 2 WIRES CABLE POWER LINE FUSE SWITCH L N 2 WIRES CABLE POWER LINE L N 2 WIRES CABLE POWER LINE L N 2 WIRES CABLE POWER LINE L N When the power source is supplied to each outdoor unit individually When the power source is connected in series between th...

Page 413: ...INE FUSE SWITCH L N 2 WIRES CABLE TRANSMISSION LINE 2 WIRES CABLE TRANSMISSION LINE 2 WIRES CABLE TRANSMISSION LINE 2 WIRES CABLE TRANSMISSION LINE 2 WIRES CABLE TRANSMISSION LINE 2 WIRES CABLE TRANSMISSION LINE 2 WIRES CABLE TRANSMISSION LINE 2 WIRES CABLE TRANSMISSION LINE 2 WIRES CABLE TRANSMISSION LINE 2 WIRES CABLE TRANSMISSION LINE 2 WIRES CABLE TRANSMISSION LINE MAIN SWITCH N L2 L1 L3 2 WIR...

Page 414: ...SiBE37 701 Wiring Diagrams for Reference Appendix 403 2 3 Indoor Unit FXFQ20P 25P 32P 40P 50P 63P 80P 100P 125PVEB ...

Page 415: ...Wiring Diagrams for Reference SiBE37 701 404 Appendix FXZQ20M 25M 32M 40M 50MV1 ...

Page 416: ...SiBE37 701 Wiring Diagrams for Reference Appendix 405 FXCQ20M 25M 32M 63MV3 ...

Page 417: ...Wiring Diagrams for Reference SiBE37 701 406 Appendix FXCQ40M 50M 80M 125MV3 ...

Page 418: ...CED OFF OR ON OFF CONTROL OPERATION CAN BE SELECTED BY REMOTE CONTROLLER IN DETAILS REFER TO THE INSTALLATION MANUAL ATTACHED THE UNIT 5 IN CASE HIGH E S P OPERATION CHANGE OVER THE WIRING CONNECTION FROM X2A TO X3A 6 SYMBOLS SHOW AS FOLLOWS PNK PINK WHT WHITE YLW YELLOW ORG ORANGE BLU BLUE BLK BLACK RED RED BRN BROWN GRY GRAY 7 USE COPPER CONDUCTORS ONLY X4A BLK R2T RED N HAP S1Q Y1 A1P BLK FC NO...

Page 419: ...CK WHT WHITE YLW YELLOW PRP PURPLE GRY GRAY BLU BLUE PNK PINK ORG ORANGE GRN GREEN KPR X13A M1P RED X7A L POWER SUPPLY X18A R1T 220V 60Hz X31A X8A BLK TRANSMISSION WIRING CENTRAL REMOTE CONTROLLER WHT NOTE 5 Z2C N 3 t BLU CONTROL BOX GRN YLW N L V1TR Q1M 220 240V 50Hz P1 WIRED REMOTE CONTROLLER X1M P2 F1U M F2 T2 P2 T1 F1 P1 R3T BLK GRY BLU PRP INPUT FROM OUTSIDE X12A WIRED REMOTE CONTROLLER CONNE...

Page 420: ...SiBE37 701 Wiring Diagrams for Reference Appendix 409 FXDQ20M 25MV3 ...

Page 421: ...Wiring Diagrams for Reference SiBE37 701 410 Appendix FXSQ20M 25M 32M 40M 50M 63MV3 ...

Page 422: ...SiBE37 701 Wiring Diagrams for Reference Appendix 411 FXSQ80M 100M 125MV3 ...

Page 423: ... BY REMOTE CONTROLLER IN DETAILS REFER TO THE INSTALLATION MANUAL ATTACHED THE UNIT 5 IN CASE HIGH E S P OPERATION CHANGE THE WIRING CONNECTION OF X2A AS SHOWN UPPER FIGURE 6 SYMBOLS SHOW AS FOLLOWS PNK PINK WHT WHITE YLW YELLOW ORG ORANGE BLU BLUE BLK BLACK RED RED BRN BROWN 7 USE COPPER CONDUCTORS ONLY Y1 RED FC X3A FL BRN FH CONNECTOR FOR OPTIONAL PARTS KPR RED K2R A2P BLU M N BRN A1P L X2M X3A...

Page 424: ...HED INSTRUCTION MANUAL 4 WHEN CONNECTING THE INPUT WIRES FROM OUTSIDE FORCED OFF OR ON OFF CONTROL OPERATION CAN BE SELECTED BY REMOTE CONTROLLER IN DETAILS REFER TO THE INSTALLATION MANUAL ATTACHED THE UNIT 5 IN CASE INSTALLING THE DRAIN PUMP REMOVE THE SHORT CIRCUIT CONNECTOR OF X8A AND EXECUTE THE ADDITIONAL WIRING FOR FLOAT SWITCH AND DRAIN PUMP 6 SYMBOLS SHOW AS FOLLOWS PNK PINK WHT WHITE YLW...

Page 425: ... MSW P2 YLW X12A TRANSMISSION WIRING CENTRAL REMOTE CONTROLLER X23A X1A A1P NOTE 5 R3T Q1M M X7A BLU NOTE 6 RED WHT T2 X18A X1A F2 POWER SUPPLY BLK C1R NOTE 3 KAR X23A INPUT FROM OUTSIDE X1M R2T WHT ELECTRIC PARTS BOX RED SS1 A2P X2M X8A X27A X2A L X6A A1P F1 N A1P C1R F1U HAP KAR KPR M1F M1S Q1M R1T R2T R3T S1Q T1R X1M X2M Y1E PC M1P R1T SS1 A2P A3P BS1 H1P H2P H3P H4P SS1 SS2 X8A X18A X23A LIGHT...

Page 426: ...ER ORG NOTE 8 RECEIVER DISPLAY UNIT WIRELESS REMOTE CONTROLLER R3T R1T SS1 WHT N NOTE 8 X15A X35A X18A PNK R2T POWER SUPPLY TRANSMISSION WIRING CENTRAL REMOTE CONTROLLER RED M1S R1T CONNECTOR FOR OPTIONAL PARTS RECEIVER DISPLAY UNIT ATTACHED TO WIRELESS REMOTE CONTROLLER P1 BS1 NOTE 2 SS1 INPUT FROM OUTSIDE RED L YLW NE 5 WHEN CONNECTING THE INPUT WIRES FROM OUTSIDE FORCED OFF OR ON OFF CONTROL OP...

Page 427: ...T IT TO THE UNIT IN ACCORDANCE WITH THE ATTACHED INSTRUCTIO MANUAL 4 WHEN CONNECTING THE INPUT WIRES FROM OUTSIDE FORCED OFF OR ON OFF CONTROL OPERATION CAN BE SELECTED BY REMOTE CONTROLLER IN DETAILS REFER TO THE INSTALLATION MANUAL ATTACHED THE UNIT 5 SYMBOLS SHOW AS FOLLOWS PNK PINK WHT WHITE YLW YELLOW ORG ORANGE BLU BLUE BLK BLACK RED RED BRN BROWN 6 USE COPPER CONDUCTORS ONLY NOTES A1P C1 F1...

Page 428: ... SWITCH DS1 2 INITIAL SETTINGS ARE AS FOLLOWS FOR USING DIP SWITCH DS1 2 REFER TO INSTALLATION MANUAL OR SERVICE PRECAUTION LABEL ON EL COMPO BOX COVER X2A BSVQ250PV1 F1 DS2 DS1 F1 Y3E POWER SUPPLY 220 240V 50Hz RED X6A ON DS2 ON DS1 X2M A1P DS1 BSVQ160PV1 BS UNIT TOP 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 1 2 3 4 A1P DS1 DS2 F1U HAP PS X1M X1M A1P X2M Y1E PRINTED CIRCUIT BOARD DIP SWITCH FUSE T ...

Page 429: ... Fully open 1375pls Electronic expansion valve Subcool Y2E Fully closed 0pls Fully open 480pls Electronic expansion valve Refrigerant charge EV 0 480pls Pressure protection Highpressure switch For M1C S1PH OFF 4 0 MPa ON 3 0 0 15MPa For M2C S2PH OFF 4 0 MPa ON 3 0 0 15MPa For M3C S3PH Low pressure sensor SENPL OFF 0 07MPa Temperature protection Discharge gas temperature protection Discharge pipe t...

Page 430: ...Y2E Fully closed 0pls Fully open 480pls Electronic expansion valve Refrigerant charge EV 0 480pls Pressure protection Highpressure switch For M1C S1PH OFF 4 0 MPa ON 3 0 0 15MPa For M2C S2PH OFF 4 0 MPa ON 3 0 0 15MPa For M3C S3PH OFF 4 0 MPa ON 3 0 0 15MPa Low pressure sensor SENPL OFF 0 07MPa Temperature protection Discharge gas temperature protection Discharge pipe thermistor R3T OFF 135 C Inve...

Page 431: ...harge Y2E Fully closed 0pls Fully open 480pls Electronic expansion valve Subcool Y3E Fully closed 0pls Fully open 480pls Pressure protection Highpressure switch For M1C S1PH OFF 4 0 MPa ON 3 0 0 15MPa For M2C S2PH OFF 4 0 MPa ON 3 0 0 15MPa For M3C S3PH Low pressure sensor SENPL OFF 0 07MPa Temperature protection Discharge gas temperature protection Discharge pipe thermistor R3T OFF 135 C Inverter...

Page 432: ... Fully closed 0pls Fully open 480pls Electronic expansion valve Subcool Y3E Fully closed 0pls Fully open 480pls Pressure protection Highpressure switch For M1C S1PH OFF 4 0 MPa ON 3 0 0 15MPa For M2C S2PH OFF 4 0 MPa ON 3 0 0 15MPa For M3C S3PH OFF 4 0 MPa ON 3 0 0 15MPa Low pressure sensor SENPL OFF 0 07MPa Temperature protection Discharge gas temperature protection Discharge pipe thermistor R3T ...

Page 433: ...tor Heat Exchanger R2T ST8602A 5 φ6 L1000 20kΩ 25 C Others Float Switch S1L FS 0211B Fuse F1U 250V 5A φ5 2 Thermal Fuse TFu Transformer T1R Parts Name Symbol Model Remark FXCQ 20MV3 FXCQ 25MV3 FXCQ 32MV3 FXCQ 40MV3 FXCQ 50MV3 FXCQ 63MV3 FXCQ 80MV3 FXCQ 125 MV3 Remote Controller Wired Remote Controller BRC1D52 Option Wireless Remote Controller BRC7C62 Motors Fan Motor M1F AC 220 240V 50Hz 1φ10W 1φ1...

Page 434: ...istor Heat Exchanger R2T ST8602A 3 φ6 L630 20kΩ 25 C Others Float Switch S1L FS 0211 Fuse F1U 250V 5A φ5 2 Transformer T1R TR22H21R8 Parts Name Symbol Model Remark FXKQ 25MAVE FXKQ 32MAVE FXKQ 40MAVE FXKQ 63MAVE Remote Controller Wired Remote Controller BRC1D52 Option Wireless Remote Controller BRC4C61 Motors Fan Motor M1F AC 220 240V 50Hz 1φ15W 4P 1φ20W 4P 1φ45W 4P Thermal Fuse 146 C Thermal prot...

Page 435: ...e 145 C Thermistors Thermistor Suction Air R1T ST8601 1 φ4 L 250 20kΩ 25 C Thermistor for Heat Exchanger High Temp R3T ST8605 4 φ8 L 800 20kΩ 25 C Thermistor Heat Exchanger R2T ST8602A 4 φ6 L 800 20kΩ 25 C Others Float Switch S1L FS 0211E Fuse F1U 250V 5A φ5 2 Transformer T1R TR22H21R8 Parts Name Symbol Model Remark FXDQ20MV3 FXDQ25MV3 Remote Controller Wired Remote Controller BRC1D52 Option Wirel...

Page 436: ...kΩ 25 C Others Float Switch S1L FS 0211B Fuse F1U 250V 5A φ5 2 Transformer T1R TR22H21R8 Parts Name Symbol Model Remark FXMQ 40MAVE FXMQ 50MAVE FXMQ 63MAVE FXMQ 80MAVE FXMQ 100MAVE FXMQ 125MAVE FXMQ 200MAVE FXMQ 250MAVE Remote Controller Wired Remote Controller BRC1D52 Option Wireless Remote Controller BRC4C62 Motors Fan Motor M1F AC 220 240V 50Hz 1φ100W 1φ160W 1φ270W 1φ430W 1φ380W 2 Thermal prote...

Page 437: ...50 20kΩ 25 C Thermistor Heat Exchanger R2T ST8602A 6 φ6 L 1250 20kΩ 25 C ST8602A 6 φ6 L 1250 20kΩ 25 C Others Fuse F1U 250V 5A φ5 2 Transformer T1R TR22H21R8 Parts Name Symbol Model Remark FXAQ 20MAVE FXAQ 25MAVE FXAQ 32MAVE FXAQ 40MAVE FXAQ 50MAVE FXAQ 63MAVE Remote Controller Wired Remote Controller BRC1D52 Option Wireless Remote Controller BRC7E618 Motors Fan Motor M1F AC 220 240V 50Hz 1φ40W 1φ...

Page 438: ...8 L2500 20kΩ 25 C Thermistor for Heat Exchanger R2T ST8602A 9 φ6 L2500 20kΩ 25 C Others Fuse F1U AC250V 5A Transformer T1R TR22H21R8 Parts Name Symbol Model Remark FXNQ 20MAVE FXNQ 25MAVE FXNQ 32MAVE FXNQ 40MAVE FXNQ 50MAVE FXNQ 63MAVE Remote Controller Wired Remote Controller BRC1D52 Option Wireless Remote Controller BRC4C62 Motors Fan Motor M1F AC 220 240V 50Hz 1φ15W 1φ25W 1φ35W Thermal protecto...

Page 439: ...r for wiring KRP1B56 KRP1B57 KRP1B61 KRP1B3 PC board when equipped with auxiliary electric heater in the indoor unit 2 DIII NET Expander Adaptor DTA109A51 Up to 1 024 units can be centrally controlled in 64 different groups Wiring restrictions max length 1 000 m total wiring length 2 000 m max number of branches 16 apply to each adaptor No Part name Model No Function 1 Central remote controller DC...

Page 440: ...system using the Internet and a Web browser application on a PC 2 3 Eco DAM003A51 ECO Energy saving functions 2 4 Optional DIII Ai unit DAM101A51 External temperature sensor for intelligent Manager III 2 5 Di unit DEC101B51 Input contacts 16 points 2 6 Dio unit DEC102B51 Input contacts 8 points output contacts 4 points 3 Communication line 1 Interface for use in BACnet DMS502B51 Interface unit to ...

Page 441: ...RV III H R REYQ26PY1 REYQ28PY1 REYQ30PY1 REYQ32PY1 Distributive Piping Refnet header Model KHRP25M33H KHRP25M72H KHRP25M73H Max 8 branch Max 8 branch Max 8 branch Refnet joint Model KHRP25A22T KHRP25A33T KHRP25A72T KHRP25M72TP KHRP25A73T KHRP25M73TP Outdoor unit multi connection piping kit Model BHFP26P90 Central drain pan kit Model KWC26C280 KWC26C450 KWC26C450 2 Digital pressure gauge kit Model ...

Page 442: ... to level or go up to an outdoor unit and to make a slope V3036 When the piping length between the multi connection kits or between multi connection kit and outdoor unit is 2m or more prepare a vertical projection part 200mm or more as shown below only on the gas pipe line location less than 2m from multi connection kit The projection part between multi connection piping kits Less than 2m In the c...

Page 443: ...Wrong Good Good Vertical Projection V3040 Max allowable Piping Length Outdoor Unit Multi Connection Piping Kit Actual piping length 10m or less equivalent length 13m or less Multi Connection Piping Kit Indoor Unit Actual piping length 165m or less equivalent length 190m or less the total extension 1000m or less REFNET Joint Indoor Unit Actual piping length 40m or less Refer to Page 449 Note 2 in c...

Page 444: ...a o 165m Equvalent pipe length between outdoor unit 2 and indoor unit 190m Note 1 Assume eqivalent pipe length of REFNET joint to be 0 5m that of REFNET header to be 1m that of BSVQ100 160 to be 4m that of BSVQ250 to be 6m for calculation purposes Total piping length from outdoor unit 2 to all indoor unit 1000m Actual pipe length from first outdoor unit multi connection piping kit to outdoor unit ...

Page 445: ...26M22H or KHRP26M33H KHRP26M33H KHRP26M72H KHRP26M73H KHRP26M73HP Refrigerant branch kit name Example for indoor units connected downstream Example REFNET joint C Indoor units 5 6 7 8 Example REFNET joint B Indoor units 7 8 Example REFNET header Indoor units 1 2 3 4 5 6 Example REFNET header Indoor units 1 2 3 4 5 6 7 8 The thickness of the pipes in the table shows the requirements of Japanease Hi...

Page 446: ... size at φ6 4 0 37 0 18 0 059 0 26 0 12 0 022 1 02 HEAT RECOVER SYSTEM MODEL NAME THE AMOUNT OF REFRIGERANT REYQ8 16PY1 REYQ18 20PY1 REYQ22 24PY1 REYQ26PY1 REYQ28 30PY1 REYQ32 40PY1 REYQ42PY1 REYQ44 46PY1 REYQ48PY1 3 6kg 1 0kg 1 5kg 2 0kg 2 5kg 3 0kg 3 5kg 4 0kg 4 5kg REFRIGERANT AMOUNT FOR EXCEEDING CONNECTION CAPACITY OF INDOOR UNIT INDOOR CONNECTION CAPACITY MORE THAN 100 120 OR LESS MORE THAN ...

Page 447: ...Example of connection SiBE37 701 436 Appendix ...

Page 448: ... 3 56 49 55 08 53 6 41 6 53 4 53 71 52 38 54 6 65 6 53 5 51 09 49 83 55 6 41 6 53 6 48 61 47 42 56 6 18 6 06 7 46 26 45 14 57 5 95 5 84 8 44 05 42 98 58 5 74 5 43 9 41 95 40 94 59 5 14 5 05 10 39 96 39 01 60 4 96 4 87 11 38 08 37 18 61 4 79 4 70 12 36 30 35 45 62 4 62 4 54 13 34 62 33 81 63 4 46 4 38 14 33 02 32 25 64 4 30 4 23 15 31 50 30 77 65 4 16 4 08 16 30 06 29 37 66 4 01 3 94 17 28 70 28 05...

Page 449: ...6 233 14 71 33 92 33 35 121 7 26 7 16 22 228 05 223 08 72 32 78 32 23 122 7 06 6 97 23 218 24 213 51 73 31 69 31 15 123 6 87 6 78 24 208 90 204 39 74 30 63 30 12 124 6 69 6 59 25 200 00 195 71 75 29 61 29 12 125 6 51 6 42 26 191 53 187 44 76 28 64 28 16 126 6 33 6 25 27 183 46 179 57 77 27 69 27 24 127 6 16 6 08 28 175 77 172 06 78 26 79 26 35 128 6 00 5 92 29 168 44 164 90 79 25 91 25 49 129 5 84...

Page 450: ...H Low Pressure PL PH Detected Pressure High Side MPa PL Detected Pressure Low Side MPa VH Output Voltage High Side VDC VL Output Voltage Low Side VDC PH 1 38V 0 69 PL 0 57V 0 28 PH High pressure MPa PL Low pressure MPa V Voltage V Output Voltage VH VL Detected Pressure V3053 ...

Page 451: ...e for the checking Test points h Turn OFF the power supply Then after a lapse of 10 minutes or more make measurement of resistance Preparation h To make measurement disconnect all connectors and terminals Inverter PC board Electronic circuit According to the checking aforementioned it is probed that the malfunction results from the faulty inverter The following section describes supposed causes of...

Page 452: ...0 U N3 2 to 15kΩ 10 U N3 Not less than 1 2V including It may take time to determine the voltage due to capacitor charge or else 11 V N3 11 V N3 12 W N3 12 W N3 When using the analog type of multiple tester make measurement in resistance measurement mode in the x1kΩ range When using the digital type of multiple tester make measurement in diode check mode No Measuring point Criterion Remark No Measu...

Page 453: ...Method of Checking the Inverter s Power Transistors and Diode Modules SiBE37 701 442 Appendix ...

Page 454: ...7 701 Precautions for New Refrigerant R 410A 443 Part 8 Precautions for New Refrigerant R 410A 1 Precautions for New Refrigerant R 410A 444 1 1 Outline 444 1 2 Refrigerant Cylinders 446 1 3 Service Tools 447 ...

Page 455: ...ropic mixture refrigerant mixture of two or more refrigerants having similar boiling points 3 The design pressure is different at each product Please refer to the installation manual for each product Reference 1 MPa 10 19716 kgf cm2 HFC units Units using new refrigerants HCFC units Refrigerant name R 407C R 410A R 22 Composing substances Non azeotropic mixture of HFC32 HFC125 and HFC134a 1 Quasi a...

Page 456: ... New Refrigerant R 410A 445 Thermodynamic characteristic of R 410A Temperature Steam pressure kPa Liquid Vapor Density kg m3 Liquid Vapor Specific heat at constant pressure kJ kgK Liquid Vapor Specific enthalpy kJ kg Liquid Vapor Specific entropy kJ KgK Liquid Vapor ...

Page 457: ...ned in high pressure vessels Although those vessels are durable and strong careless handling can cause damage that can lead to unexpected accidents Do not drop vessels let them fall apply impact or roll them on the ground 3 Storage Although R 410A is not flammable it must be stored in a well ventilated cool and dark place in the same way as any other high pressure gases It should also be noted tha...

Page 458: ...on differs for R 410A and R 407C Charging cylinder Weighting instrument used for HFCs Gas detector The same tool can be used for HFCs Vacuum pump pump with reverse flow preventive function To use existing pump for HFCs vacuum pump adaptor must be installed Weighting instrument Charge mouthpiece Seal material is different between R 22 and HFCs Thread specification is different between R 410A and ot...

Page 459: ...pipe extension margin of 0 to 0 5mm was provided for flaring For R 410A air conditioners perform pipe flaring with a pipe extension margin of 1 0 to 1 5mm For clutch type only Conventional tool with pipe extension margin adjustment can be used Flare gauge Nominal size 1 4 3 8 1 2 5 8 3 4 Tube O D Do 6 35 9 52 12 70 15 88 19 05 Class 2 R 410A 9 1 13 2 16 6 19 7 24 0 Class 1 Conventional 9 0 13 0 16...

Page 460: ...ed z Maximum degree of vacuum 50 l min 50Hz Select a vacuum pump which is able to keep 60 l min 60Hz the vacuum degree of the system in excess of Suction port UNF7 16 20 1 4 Flare 100 7 kPa 5 torr 755 mmHg UNF1 2 20 5 16 Flare with adapter Differences Equipped with function to prevent reverse oil flow Previous vacuum pump can be used by installing adapter Nominal size Class 1 Class 2 Previous 1 2 ...

Page 461: ...ts hydrogen 5 Refrigerant oil Air compal Specifications Contains synthetic oil therefore it can be used for piping work of every refrigerant cycle Offers high rust resistance and stability over long period of time Differences Can be used for R 410A and R 22 units 6 Gauge manifold for R 410A Specifications High pressure gauge 0 1 to 5 3 MPa 76 cmHg to 53 kg cm2 Low pressure gauge 0 1 to 3 8 MPa 76 ...

Page 462: ...e with and without hand operate valve that prevents refrigerant from outflow Differences Pressure proof hose Change in service port diameter Use of nylon coated material for HFC resistance 8 Charging cylinder Specifications Use weigher for refrigerant charge listed below to charge directly from refrigerant cylinder Differences The cylinder can not be used for mixed refrigerant since mixing ratio i...

Page 463: ...check liquid refrigerant charging A manifold with separate ports for HFCs and previous refrigerants is equipped as standard accessories Differences Measurement is based on weight to prevent change of mixing ratio during charging 10 Charge mouthpiece Specifications For R 410A 1 4 5 16 2min 2 5min Material is changed from CR to H NBR Differences Change of thread specification on hose connection side...

Page 464: ...on 370 CJ 271 Concept of Inverter related Malfunction Codes 382 Cooling only Heat pump setting 204 Current Sensor Malfunction 293 D Defective Inverter PC Board 305 Detailed Explanation of Setting Modes 194 Display Under Centralized Control Blinks Repeats Double Blink 368 Display Under Centralized Control Blinks Repeats Single Blink 365 Drain Level above Limit 266 E E1 272 E3 273 E4 275 E5 277 E6 2...

Page 465: ...for Suction Air 270 Malfunction of Thermistor R2T for Heat Exchanger 268 Malfunction of Thermistor R3T for Gas Pipes 269 Malfunction of Thermistor R4T or R12T for Outdoor Unit Heat Exchanger 297 Malfunction of Thermistor R8T or R10T for Suction Pipe 296 Malfunction of Thermostat Sensor in Remote Controller 271 Malfunction of Transmission between Centralized Controller and Indoor Unit 352 Malfuncti...

Page 466: ...de 2 211 Startup Control 117 STD Compressor Motor Overcurrent Lock 279 Symptom based Troubleshooting 234 System is not Set yet 355 T The Example of a Wrong Pattern 432 Transmission Failure Across Outdoor Units 337 Troubleshooting OP Central Remote Controller 358 Troubleshooting OP Unified ON OFF Controller 363 U U0 326 U1 328 U2 329 U3 332 U4 333 U5 336 U7 337 U8 343 U9 344 UA 345 UC 351 UE 352 UF...

Page 467: ...SiBE37 701 iv Index ...

Page 468: ...erter PC Board 305 Detailed Setting Procedure of Low Noise Operation and Demand Control 222 Discharge Pipe Protection Control 134 Display Under Centralized Control Blinks Repeats Double Blink 368 Display Under Centralized Control Blinks Repeats Single Blink 365 Drain Level above Limit 266 Drain Pump Control 145 When the Float Switch is Tripped and AF is Displayed on the Remote Controller 146 When ...

Page 469: ...8 Malfunction of Thermistor R3T for Gas Pipes 269 Malfunction of Thermistor R4T or R12T for Outdoor Unit Heat Exchanger 297 Malfunction of Thermistor R8T or R10T for Suction Pipe 296 Malfunction of Thermostat Sensor in Remote Controller 271 Malfunction of Transmission between Centralized Controller and Indoor Unit 352 Malfunction of Transmission between Indoor and Outdoor Units in the Same System ...

Page 470: ... 221 Image of Operation in the Case of B 219 221 Simplified Remote Controller 191 BRC2A51 BRC2C51 191 STD Compressor Motor Overcurrent Lock 279 STD Compressor Overload Protection 137 System is not Set yet 355 T Test Operation 154 Thermostat Sensor in Remote Controller 141 Cooling 141 Heating 142 Transmission Failure Across Outdoor Units 337 Troubleshooting OP Central Remote Controller 358 Troubles...

Page 471: ...SiBE37 701 viii Drawings Flow Charts ...

Page 472: ...ion Ask a qualified installer or contractor to install this product Do not try to install the product yourself Improper installation can result in water or refrigerant leakage electrical shock fire or explosion Use only those parts and accessories supplied or specified by Daikin Ask a qualified installer or contractor to install those parts and accessories Use of unauthorised parts and accessories...

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