Daikin VRV III REYQ10PY1 Service Manual Download | Manualshive

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Si37-701

Troubleshooting by Indication on the Remote Controller

Troubleshooting

299

Troubleshooting

(V2816)

Caution

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

Is

the voltage

imbalance applied to the

inverter in excess of

14 V (Y1)?

∗

2

NO

Part or wiring defect
After turning the power supply
OFF, check and repair the
main circuit wiring or parts.
(1) Loose or disconnected

wiring between power
supply and inverter

(2) K2 contact disposition,

fusion or contact is poor.

(3) Loose or disconnected

noise filter

Using a device capable of
constant recording of power
supply voltage record
power supply voltage
between 3 phases (L1 ~ L2,
L2 ~ L3, L3~L1) for about
one continuous week.

Open phase
Normalize field cause.

Power supply 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 excess of 14 V

(Y1).

∗

1

Open phase?

<When voltage monitoring is possible:>

∗

1. Measure voltage at the X1M power supply

terminal block.

∗

2. Measure voltage at connector X10A (RED,

WHITE and BLACK wire pins) of the diode
module inside the inverter while the compressor
is running.

∗

In accordance with "notification of inspection results" accompanying spare parts.

Give the user a copy of "notification of inspection results"and leave
it up to him to improve the imbalance.

Be sure to explain to the user that
there is a "power supply imbalance"
for which DAIKIN is not responsible.

measure

YES

NO

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Summary of Contents for VRV III REYQ10PY1

Page 1: ...REYQ8 48PY1 R 410A Heat Recovery 50Hz Si37 701 ...

Page 2: ...1 3 BS Units 47 Part 3 Refrigerant Circuit 49 1 Refrigerant Circuit 50 1 1 REYQ8P 10P 12P 50 1 2 REYQ14P 16P 52 1 3 REMQ8PY1 Multi 8HP 54 1 4 REMQ10PY1 12PY1 Multi 10 12HP 56 1 5 REMQ14PY1 16PY1 Multi 14 16HP 58 1 6 BS Unit Functional Parts 60 1 7 Indoor Units 61 2 Functional Parts Layout 62 2 1 REYQ8P 10P 12P 62 2 2 REYQ14P 16P 63 2 3 REMQ8P 64 2 4 REMQ10P 12P 65 2 5 REMQ14P 16P 66 3 Refrigerant ...

Page 3: ...D Compressor Overload Protection 131 5 Other Control 132 5 1 Backup Operation 132 5 2 Demand Operation 132 5 3 Heating Operation Prohibition 132 6 Outline of Control Indoor Unit 133 6 1 Operation Flow Chart 133 6 2 Thermostat Control 135 6 3 Drain Pump Control 139 6 4 Control of Electronic Expansion Valve 141 6 5 Freeze Prevention 142 6 6 Heater Control Optional PC Board KRP1B is required 143 6 7 ...

Page 4: ... of Capacity Determination Device 245 3 9 C4 Indoor Unit Malfunction of Thermistor R2T for Heat Exchanger 246 3 10 C5 Indoor Unit Malfunction of Thermistor R3T for Gas Pipes 247 3 11 C9 Indoor Unit Malfunction of Thermistor R1T for Suction Air 248 3 12 CJ Indoor Unit Malfunction of Thermostat Sensor in Remote Controller 249 3 13 E1 Outdoor Unit PC Board Defect 250 3 14 E3 Outdoor Unit Actuation of...

Page 5: ...utdoor Unit Inverter Over Ripple Protection 298 3 42 P4 Outdoor Unit Malfunction of Inverter Radiating Fin Temperature Rise Sensor 300 3 43 PJ Outdoor Unit Faulty Field Setting after Replacing Main PC Board or Faulty Combination of PC Board 302 3 44 U0 Outdoor Unit Gas Shortage Alert 304 3 45 U1 Reverse Phase Open Phase 306 3 46 U2 Outdoor Unit Power Supply Insufficient or Instantaneous Failure 30...

Page 6: ...ing Diagrams for Reference 372 2 1 Outdoor Unit 372 2 2 Field Wiring 377 2 3 Indoor Unit 380 2 4 BS Unit 395 3 List of Electrical and Functional Parts 396 3 1 Outdoor Unit 396 3 2 Indoor Side 401 4 Option List 407 4 1 Option List of Controllers 407 4 2 Option Lists Outdoor Unit 409 5 Piping Installation Point 410 5 1 Piping Installation Point 410 5 2 The Example of a Wrong Pattern 411 6 Example of...

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 dischargin...

Page 8: ...he 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 strengt...

Page 9: ...ice 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 imme...

Page 10: ...l 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 t...

Page 11: ...ries 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 Sept 2007 After Sales Service Division ...

Page 12: ...01 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: ...Cassette Type FXZQ 20M8 25M8 32M8 40M8 50M8 V1B Ceiling Mounted Cassette Corner Type FXKQ 25MA 32MA 40MA 63MA VE Slim Ceiling Mounted Duct Type FXDQ PVE 20P 25P 32P FXDQ PVET 20P 25P 32P FXDQ NAVE 20NA 25NA 32NA 40NA 50NA 63NA FXDQ NVET 20N 25N 32N 40N 50N 63N Ceiling Concealed Duct Type Aus exclusive use FXDYQ 80M 100M 125M 145M 180M 200M 250M V1 Ceiling Mounted Built In Type FXSQ 20M 25M 32M 40M...

Page 14: ...25M8 FXZQ32M8 FXZQ40M8 FXZQ50M8 Wall Mounted Type FXAQ20MA FXAQ25MA FXAQ32MA FXAQ40MA FXAQ50MA FXAQ63MA Ceiling Mounted Cassette Corner Type FXKQ25MA FXKQ32MA FXKQ40MA FXKQ63MA Floor Standing Type FXLQ20MA FXLQ25MA FXLQ32MA FXLQ40MA FXLQ50MA FXLQ63MA Slim Ceiling Mounted Duct Type FXDQ20P FXDQ20N A FXDQ25P FXDQ25N A FXDQ32P FXDQ32N A FXDQ40N A FXDQ50N A FXDQ63N A with Drain Pump VE without Drain P...

Page 15: ... 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: ...t 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 4...

Page 17: ...34P 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 name RE...

Page 18: ...ed Cassette Type Multi Flow FXFQ 25M 32M 40M 50M 63M 80M 100M 125M 600 600 Ceiling Mounted Cassette Type Multi Flow FXZQ 20M8 25M8 32M8 40M8 50M8 V1B Ceiling Mounted Cassette Corner Type FXKQ 25MA 32MA 40MA 63MA VE Slim Ceiling Mounted Duct Type FXDQ PVE 20P 25P 32P FXDQ PVET 20P 25P 32P FXDQ NAVE 20NA 25NA 32NA 40NA 50NA 63NA FXDQ NVET 20N 25N 32N 40N 50N 63N Ceiling Concealed Duct Type Aus exclu...

Page 19: ...qualizer 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 BHFP26P...

Page 20: ...Si37 701 Specifications 9 Part 2 Specifications 1 Specifications 10 1 1 Outdoor Units 10 1 2 Indoor Units 21 1 3 BS Units 47 ...

Page 21: ...r of Units kW 1 0 4 5 2 2 4 5 Starting Method Soft Start Soft Start Fan Type Propeller Fan Propeller 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 Pres...

Page 22: ...980 Motor Output Number of Units kW 3 3 4 5 3 8 3 8 Starting Method Soft Start Soft Start Fan Type Propeller Fan Propeller 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 Conn...

Page 23: ...n Coil Comp Type Hermetically Sealed Scroll Type Piston Displacement 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 Propeller 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 H...

Page 24: ... 2900 7980 Motor Output Number of Units kW 2 2 4 5 1 4 7 1 3 5 4 5 1 4 7 1 Starting Method Soft start Soft start Fan Type Propeller fan Propeller 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 ...

Page 25: ...0 2900 2 Motor Output Number of Units kW 3 5 4 5 1 2 2 4 5 1 3 5 4 5 2 Starting Method Soft start Soft start Fan Type Propeller fan Propeller 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 C1220...

Page 26: ... 6300 2900 2900 6300 2900 Motor Output Number of Units kW 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 Propeller fan Propeller 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 Brazi...

Page 27: ... 2900 2900 2 Motor Output Number of Units kW 3 2 4 5 4 5 1 1 9 4 5 4 5 1 3 2 4 5 4 5 2 Starting Method Soft start Soft start Fan Type Propeller fan Propeller 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 Ga...

Page 28: ...00 2900 2900 6300 2900 7980 Motor Output Number of Units 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 Propeller fan Propeller 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 φ1...

Page 29: ...300 2900 2900 6300 2900 2 Motor Output Number of Units kW 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 Propeller fan Propeller 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 ...

Page 30: ...0 2900 6300 2900 2900 2 6300 2900 Motor Output Number of 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 Propeller fan Propeller 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 Brazi...

Page 31: ... 6300 2900 2900 3 Motor Output Number of Units kW 3 2 4 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 Propeller fan Propeller 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 Br...

Page 32: ...Wool Urethane Foam Piping Connections Liquid Pipes mm φ6 4 Flare Connection φ6 4 Flare Connection φ6 4 Flare Connection φ6 4 Flare Connection Gas Pipes mm φ12 7 Flare Connection φ12 7 Flare Connection φ12 7 Flare Connection φ12 7 Flare Connection Drain Pipe mm VP25 External Dia 32 Internal Dia 25 VP25 External Dia 32 Internal Dia 25 VP25 External Dia 32 Internal Dia 25 VP25 External Dia 32 Interna...

Page 33: ...s Wool Urethane Foam Piping Connections Liquid Pipes mm φ6 4 Flare Connection φ9 5 Flare Connection φ9 5 Flare Connection φ9 5 Flare Connection Gas Pipes mm φ12 7 Flare Connection φ15 9 Flare Connection φ15 9 Flare Connection φ15 9 Flare Connection Drain Pipe mm VP25 External Dia 32 Internal Dia 25 VP25 External Dia 32 Internal Dia 25 VP25 External Dia 32 Internal Dia 25 VP25 External Dia 32 Inter...

Page 34: ...tion Material Polyurethane Form Polyurethane Form Polyurethane Form Polyurethane Form Piping Connections Liquid Pipes mm φ6 4 Flare Connection φ6 4 Flare Connection φ6 4 Flare Connection φ6 4 Flare Connection Gas Pipes mm φ12 7 Flare Connection φ12 7 Flare Connection φ12 7 Flare Connection φ12 7 Flare Connection Drain Pipe mm VP25 External Dia 32 Internal Dia 25 VP25 External Dia 32 Internal Dia 2...

Page 35: ...ermal Insulation Material Polyurethane Form Polyurethane Form Polyurethane Form Polyurethane Form Piping Connections Liquid Pipes mm φ9 5 Flare Connection φ9 5 Flare Connection φ9 5 Flare Connection φ9 5 Flare Connection Gas Pipes mm φ15 9 Flare Connection φ15 9 Flare Connection φ15 9 Flare Connection φ15 9 Flare Connection Drain Pipe mm VP25 External Dia 32 Internal Dia 25 VP25 External Dia 32 In...

Page 36: ... for Cooling and Heating Sound Absorbing Thermal Insulation Material Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed Polyethylene Piping Connections Liquid Pipes mm φ6 4 Flare Connection φ6 4 Flare Connection φ6 4 Flare Connection Gas Pipes mm φ12 7 Flare Connection φ12 7 Flare Connection φ12 7 Flare Connection Drain Pipe mm VP20 External Dia...

Page 37: ...irect Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed Polyethylene Piping Connections Liquid Pipes mm φ6 4 Flare Connection φ6 4 Flare Connection Gas Pipes mm φ12 7 Flare Connection φ12 7 Flare Connec...

Page 38: ...ection φ6 4 Flare Connection φ6 4 Flare Connection φ9 5 Flare Connection Gas Pipes mm φ12 7 Flare Connection φ12 7 Flare Connection φ12 7 Flare Connection φ15 9 Flare Connection Drain Pipe mm VP25 External Dia 32 Internal Dia 25 VP25 External Dia 32 Internal Dia 25 VP25 External Dia 32 Internal Dia 25 VP25 External Dia 32 Internal Dia 25 Mass Weight kg 31 31 31 34 5 Sound Level H L dBA 220V 38 33 ...

Page 39: ... 141 m min 9 5 7 5 9 5 7 5 10 5 8 5 cfm 335 265 335 265 371 300 External Static Pressure Pa 44 15 5 44 15 5 44 15 5 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Foamed Polyethylene Foame...

Page 40: ... 275 216 m min 10 5 8 5 12 5 10 0 16 5 13 0 cfm 371 300 441 353 583 459 External Static Pressure Pa 44 15 5 44 15 5 44 15 5 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Foamed Polyethyle...

Page 41: ... 1 Air Flow Rate H L m min 9 5 7 5 9 5 7 5 10 5 8 5 External Static Pressure Pa 44 15 5 44 15 5 44 15 5 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Foamed Polyethylene Foamed Polyethyle...

Page 42: ... 130 1 Air Flow Rate H L m min 10 5 8 5 12 5 10 0 16 5 13 0 External Static Pressure Pa 44 15 5 44 15 5 44 15 5 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Foamed Polyethylene Foamed Po...

Page 43: ...e H L I s 133 106 133 106 133 106 m min 9 5 7 5 9 5 7 5 10 5 8 5 cfm 282 226 282 226 282 226 External Static Pressure Pa 44 15 5 44 15 5 44 15 5 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Mater...

Page 44: ...5 0 435 0 435 Fan Type Twin Sirocco Fan Twin Sirocco Fan Twin Sirocco Fan Twin Sirocco Fan Motor Output W 290 490 490 655 Air Flow Rate l s 590 815 925 1070 cfm 1250 1726 1959 2266 External Static Pressure Pa 130 5 130 5 100 5 130 5 Drive Direct Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling a...

Page 45: ...1 210 910 500 1 410 910 Coil Cross Fin Coil Rows Stages Fin Pitch mm 2 22 2 0 3 22 2 0 3 22 2 0 Face Area m 0 443 0 443 0 54 Fan Type Twin Sirocco Fan Twin Sirocco Fan Twin Sirocco Fan Motor Output W 700 750 1 100 Air Flow Rate l s 1 180 1 200 1 400 cfm 2500 2542 2965 External Static Pressure Pa 150 5 180 5 200 5 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Therm...

Page 46: ...ect Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Glass Fiber Glass Fiber Glass Fiber Air Filter Resin Net with Mold Resistant Resin Net with Mold Resistant Resin Net with Mold Resistant Piping Connec...

Page 47: ...rect Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Glass Fiber Glass Fiber Glass Fiber Air Filter Resin Net with Mold Resistant Resin Net with Mold Resistant Resin Net with Mold Resistant Piping Conne...

Page 48: ...rive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Glass Fiber Glass Fiber Glass Fiber Air Filter Resin Net with Mold Resistant Resin Net with Mold Resistant Resin Net with Mold Resistant Piping Connections...

Page 49: ...33 191 233 191 233 191 325 266 m min 14 11 5 14 11 5 14 11 5 19 5 16 cfm 494 406 494 406 494 406 688 565 External Static Pressure 50Hz Pa 157 118 4 157 118 4 157 118 4 157 108 4 Drive Direct Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and He...

Page 50: ...t Number of Units W 270 1 430 1 380 2 380 2 Air Flow Rate H L I s 483 383 600 483 966 833 1 200 1 033 m min 29 23 36 29 58 50 72 62 cfm 1 024 812 1 271 1 024 2 047 1 765 2 542 2 189 External Static Pressure 50Hz Pa 157 98 4 191 152 4 221 132 4 270 147 4 Drive Direct Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor The...

Page 51: ...83 688 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Glass Wool Glass Wool Glass Wool Air Filter Resin Net with Mold Resistant Resin Net with Mold Resistant Resin Net with Mold Resistant ...

Page 52: ...4 5 8 5 9 5 5 cfm 265 159 282 177 318 194 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Fo...

Page 53: ...in 12 9 15 12 19 14 cfm 424 318 530 424 671 494 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed Polyethylene Foamed Polystyr...

Page 54: ...247 212 247 212 282 212 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Glass Fiber Urethane Foam Glass Fiber Urethane Foam Glass Fiber Urethane Foam Air Filter Resin Net with Mold Resistan...

Page 55: ...2 cfm 388 300 494 388 565 424 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Glass Fiber Urethane Foam Glass Fiber Urethane Foam Glass Fiber Urethane Foam Air Filter Resin Net with Mold Re...

Page 56: ... 6 cfm 247 212 247 212 282 212 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Glass Fiber Urethane Foam Glass Fiber Urethane Foam Glass Fiber Urethane Foam Air Filter Resin Net with Mold R...

Page 57: ...4 11 16 12 cfm 388 300 494 388 565 424 Drive Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Glass Fiber Urethane Foam Glass Fiber Urethane Foam Glass Fiber Urethane Foam Air Filter Resin Net wit...

Page 58: ...mm 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 bra...

Page 59: ...Specifications Si37 701 48 Specifications ...

Page 60: ... 52 1 3 REMQ8PY1 Multi 8HP 54 1 4 REMQ10PY1 12PY1 Multi 10 12HP 56 1 5 REMQ14PY1 16PY1 Multi 14 16HP 58 1 6 BS Unit Functional Parts 60 1 7 Indoor Units 61 2 Functional Parts Layout 62 2 1 REYQ8P 10P 12P 62 2 2 REYQ14P 16P 63 2 3 REMQ8P 64 2 4 REMQ10P 12P 65 2 5 REMQ14P 16P 66 3 Refrigerant Flow for Each Operation Mode 67 ...

Page 61: ...when 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 an...

Page 62: ...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 63: ...pressure 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 pressur...

Page 64: ...ction 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 65: ...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 66: ...rcuit 55 REMQ8PY1 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 67: ...pressure 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 in...

Page 68: ...10PY1 12PY1 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 69: ...he 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 compon...

Page 70: ...Y1 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 71: ...lve 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 Capill...

Page 72: ...heated 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 Expansi...

Page 73: ... 62 Refrigerant Circuit 2 Functional Parts Layout 2 1 REYQ8P 10P 12P Plan Front View Note For reference numbers refer to page 50 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 74: ...al Parts Layout Refrigerant Circuit 63 2 2 REYQ14P 16P Plan Front View Note For reference numbers refer to page 52 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 75: ...l Parts Layout Si37 701 64 Refrigerant Circuit 2 3 REMQ8P Plan Front View Note For reference numbers refer to page 54 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 76: ...onal Parts Layout Refrigerant Circuit 65 2 4 REMQ10P 12P Plan Front View Note For reference number refer to page 56 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 77: ...yout Si37 701 66 Refrigerant Circuit 2 5 REMQ14P 16P Plan Front View Note For reference number refer to page 58 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 78: ...uction 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 79: ...e 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 Suct...

Page 80: ...re 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 Re...

Page 81: ...iquid 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 82: ... 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 Equalizi...

Page 83: ...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 Refri...

Page 84: ...ure Gas Pipe Liquid Pipe Liquid Pipe BS Unit BS Unit Suction Pipe Suction Pipe 0pls 0pls 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 Suctio...

Page 85: ...l Pressure Gas Pipe Liquid Pipe Liquid Pipe BS Unit BS Unit Suction Pipe Suction Pipe 0pls 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 Pi...

Page 86: ...pe 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 Sucti...

Page 87: ...essure 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 88: ...re 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 Re...

Page 89: ...iquid 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 Su...

Page 90: ...re 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 Un...

Page 91: ...rature 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 92: ...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 0pls 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 Equali...

Page 93: ...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 Pip...

Page 94: ...T 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 hi...

Page 95: ...on 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 pressure g...

Page 96: ...eromstat 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 temperat...

Page 97: ... 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 high p...

Page 98: ...ve 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 REMQ8PY1 Multi 8HP REMQ10 12PY1 Multi 10 12HP EVH EVL EVHS EVLS EVSC BS Unit Indoor Uni...

Page 99: ...peration 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 Sto...

Page 100: ...e 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 REMQ8PY1 Multi 8HP REMQ10 12PY1 Multi 10 12HP In operation of defrosting EVH EVL EVHS EV...

Page 101: ... 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 REMQ8PY1 Multi 8HP REMQ10 12PY1 Multi 10 12HP In operation of defrosting EVH EVL EVHS EVL...

Page 102: ...egulating 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 regulati...

Page 103: ...tem 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 Du...

Page 104: ...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 G...

Page 105: ...Refrigerant Flow for Each Operation Mode Si37 701 94 Refrigerant Circuit ...

Page 106: ...Stopping Operation 123 4 Protection Control 124 4 1 High Pressure Protection Control 124 4 2 Low Pressure Protection Control 126 4 3 Discharge Pipe Protection Control 128 4 4 Inverter Protection Control 129 4 5 STD Compressor Overload Protection 131 5 Other Control 132 5 1 Backup Operation 132 5 2 Demand Operation 132 5 3 Heating Operation Prohibition 132 6 Outline of Control Indoor Unit 133 6 1 O...

Page 107: ...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 senso...

Page 108: ...as 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 press...

Page 109: ...eover 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 m...

Page 110: ... 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 pipe...

Page 111: ...ending 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 whil...

Page 112: ...es 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 N...

Page 113: ...STD1 STD2 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...

Page 114: ...Hz 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 52Hz...

Page 115: ...N 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 1...

Page 116: ...z 74Hz 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 32PY1 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 92Hz 1...

Page 117: ...Hz 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 66...

Page 118: ... 12 16 16HP To increase Step No STEP No unit 1 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 119: ...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 120: ... 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 121: ...tor 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 o...

Page 122: ...sor 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 va...

Page 123: ...nic 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 Four...

Page 124: ...itions 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 int...

Page 125: ...ion 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 f...

Page 126: ...orized 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 Y1...

Page 127: ...d 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 128: ... 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 expansion vale EVSC Y1E PI control Heatin...

Page 129: ... 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 Solenoid...

Page 130: ...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 131: ... 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 pressure...

Page 132: ...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 Mai...

Page 133: ...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 134: ...rcooling 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 Refrigera...

Page 135: ...mal 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 136: ...he 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 137: ...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 52...

Page 138: ...tion 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 uni...

Page 139: ... 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 pip...

Page 140: ...rotection 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 up...

Page 141: ...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 142: ...sulting 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 143: ... 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 setting...

Page 144: ... 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 indicat...

Page 145: ... 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 outl...

Page 146: ...ear 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 c...

Page 147: ...an 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 us...

Page 148: ...rmation 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 L...

Page 149: ...l 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 Se...

Page 150: ...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 151: ...eset 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 152: ... 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 153: ...fied 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 154: ...F 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 he...

Page 155: ...stat 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 opera...

Page 156: ...t 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 contr...

Page 157: ...ow 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 position...

Page 158: ...t Operation 148 1 1 Installation Process 148 1 2 Procedure and Outline 149 1 3 Operation when Power is Turned On 167 2 Outdoor Unit PC Board Layout 168 3 Field Setting 169 3 1 Field Setting from Remote Controller 169 3 2 Field Setting from Outdoor Unit 182 ...

Page 159: ... 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 160: ...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 th...

Page 161: ...ity System 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 16PY1 3 6 kg Model REYQ18 20PY1 1 0kg Model REYQ18 32PY1 Model REYQ34 48PY1 Model REYQ22 24PY1 1 5kg Model REYQ26PY1 2 0kg Model REYQ28 30PY1 2 5kg 100 A 120 0 5kg Model REYQ32 40PY1 3 0kg 120 A 130 0 5kg 1 0kg Model REYQ42PY1 3 5kg Model...

Page 162: ...ve 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 outdoor unit PC board LED display Defa...

Page 163: ...lve 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 valves ...

Page 164: ...es 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 th...

Page 165: ...linder 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 compositi...

Page 166: ...e 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 valve...

Page 167: ... 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 168: ...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 H7P...

Page 169: ...malfunction The refrigerant charge 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 operat...

Page 170: ...ollowing Refrigerant charging operation procedure as shown below and charge the remaining refrigerant of the additional charging amount For performing the refrigerant charging operation the push button on the PC board A1P of outdoor unit In case of multi system master unit are use See the figure on the previous page In addition the refrigerant are charged from the refrigerant charge port via the v...

Page 171: ...eld pipings Refrigerant flow when charging Shutoff valve Service port Field pipings Refrigerant flow when charging Service port Shutoff valve Measuring device R 410A tank with siphon Charge hose Valve A Valve A Valve B Valve C Equalizer pipe shutoff valve HP LP gas pipe shutoff valve Suction pipe shutoff valve Liquid pipe shutoff valve Refrigerant charge port Outdoor unit A Outdoor unit B Outdoor ...

Page 172: ... chapter 1 2 5 1 In case of a multi system turn on the power to all outdoor units in the refrigerant system To energize the crankcase heater make sure to turn on for 6 hours before starting operation Table Display of normal system LED display h OFF k ON l Blinking How to distinguish the master unit slave unit 1 and slave unit 2 in the multi system STEP 3 Charge the remained refrigerant by addition...

Page 173: ...d using the push button BS1 BS5 on the outdoor unit PC board A1P with the power on See 1 2 6 Onsite Settings STEP 3 Perform the check operation following the Check Operation Method below The system operation for about 40 60 minutes and automatically stops the check operation If the malfunction code is not displayed in the remote controller after the system stop check operation is completed Normal ...

Page 174: ...e may become loud during operation And the LED display may change but these are not malfunctions During the check operation it is impossible to stop the unit from the remote controller When discontinue the operation push the RETURN button BS3 The system will stop after behind operation for 30 seconds Close the front panel Otherwise it may cause a misjudgment When the checks are completed the syste...

Page 175: ...or unit PC board A1P when the system is one outdoor system Remove the line from the TO MULTI UNIT Q1 Q2 terminal UA The internal transmission wiring to TO MULTI UNIT Q1 Q2 for the single outdoor unit system are disconnected Connect the internal transmission wiring to TO MULTI UNIT Q1 Q2 See the wiring diagram Malfunction code Installation error Remedial action E3 E4 F3 F6 UF The shutoff valve of t...

Page 176: ...BS5 on the outdoor unit PC board A1P to make the necessary onsite settings See the Service Precautions label upper on the EL CONPO BOX lid for details on the positions and operating method of the push button switches and on the onsite setting Make sure to record the setting on the accessory REQUEST FOR THE INDICATION label Warning Electric Shock Warning Use an insulated rod to operate the push but...

Page 177: ...gth of time before restarting the operation Once stopping the compressor will not restart in about 5 minutes even if the On Off button of the remote controller is pushed When the system operation is stopped by the remote controller the outdoor units may continue operating for further 5 minutes at maximum The outdoor unit fan may rotate at low speeds if the Night time low noise setting or the Exter...

Page 178: ...oor 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 oper...

Page 179: ...ED LEDs display mode according to the setting 3 Mode setting switch Used to change mode 4 Local setting switch Used to make field settings MODE SET RETURN TEST RESET BS1 BS2 BS3 BS4 BS5 H1P H2P H3P H4P H5P H6P H7P H8P 1 2 3 4 1 2 3 4 F1 F2 F1 F2 Q1 Q2 Indoor Outdoor Outdoor Outdoor Multi outdoor 2 Set mode display LED 3 Mode setting switch 1 Microcomputer normal monitor 4 Local setting switch Conn...

Page 180: ...or 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 181: ...e 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 pos...

Page 182: ...ch 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 t...

Page 183: ...nly 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 controlled...

Page 184: ...Wall mounted type Floor standing type Concealed Floor standing type Multi flow Double flow Corner type FXFQ FXZQ FXCQ FXKQ FXDQ FDYQ 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 adju...

Page 185: ...cted 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 Sw...

Page 186: ...nce 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 187: ...e 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 operat...

Page 188: ...ting 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 189: ...e 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 190: ...t 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 man...

Page 191: ... 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 by...

Page 192: ...ol 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 1...

Page 193: ... 29 198 202 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 ada...

Page 194: ...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 40 204 207 8 Additional refrigerant charging 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 N...

Page 195: ...are parts 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 settin...

Page 196: ...DS2 2 to ON 1 2 3 1 2 3 4 ON OFF 4 DS1 DS2 HEAT RECOVERY 14HP REYQ14PY1 Set DS1 3 DS2 1 and DS2 2 to ON 1 2 3 1 2 3 4 ON OFF 4 DS1 DS2 HEAT RECOVERY 16HP REYQ16PY1 Set DS1 3 DS2 1 and DS2 3 to ON 1 2 3 1 2 3 4 ON OFF 4 DS1 DS2 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 RECOVE...

Page 197: ...Y 14HP REYQ14PY1 Set DS1 4 DS2 1 and DS2 4 to ON 1 2 3 1 2 3 4 ON OFF 4 DS1 DS2 HEAT RECOVERY 16HP REYQ16PY1 Set DS1 4 DS2 1 and DS2 3 to ON 1 2 3 1 2 3 4 ON OFF 4 DS1 DS2 HEAT RECOVERY 8HP REYQ8PY1B Set DS1 3 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 ...

Page 198: ...Q10PY1 HEAT RECOVERY 12HP REMQ12PY1 HEAT RECOVERY 14HP REMQ14PY1 HEAT RECOVERY 16HP REMQ16PY1 HEAT RECOVERY 8HP REMQ8PY1B HEAT RECOVERY 10HP REMQ10PY1B HEAT RECOVERY 12HP REMQ12PY1B HEAT RECOVERY 14HP REMQ14PY1B HEAT RECOVERY 16HP REMQ16PY1B Set DS2 1 DS2 2 and DS2 3 to ON Set DS2 1 and DS2 4 to ON Set DS2 1 DS2 2 and DS2 4 to ON Set DS2 1 DS2 3 and DS2 4 to ON Set DS2 1 DS2 2 DS2 3 and DS2 4 to O...

Page 199: ...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 7 7 8 7 7 7 7 7 Outdoor multi system Master 7 7 8 7 7 7 7 8 Slave 1 7 7 7 7 7 7 7 9 Slave 2 7 7 7 7 7 7 7 7 Pushbutton switches Used to c...

Page 200: ...ress 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 201: ...y 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...

Page 202: ...ation 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 r...

Page 203: ...door 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 n...

Page 204: ...77887 High 8777888 9 Tc setting 8 7 7 8 7 7 8 Low 8777778 Normal factory setting 8777787 High 8777877 10 Defrost changeover setting 8 7 7 8 7 8 7 Slow defrost 8777778 Normal factory setting 8777787 Quick defrost 8777877 11 Sequential operation setting 8 7 7 8 7 8 8 OFF 8777778 ON 8777787 12 External low noise demand setting 8 7 7 8 8 7 7 External low noise demand NO 8777778 External low noise dema...

Page 205: ... Demand setting 1 8 7 8 8 8 8 7 60 demand 8777778 70 demand 8777787 80 demand 8777877 32 Normal demand setting 8 8 7 7 7 7 7 OFF 8777778 Demand 1 8777787 Demand 2 8777877 38 Emergency operation Master unit is inhibited to operate 8 8 7 7 8 8 7 OFF 8777778 Master unit operation Inhibited 8777787 39 Emergency operation Slave unit 1 is inhibited to operate 8 8 7 7 8 8 8 OFF 8777778 Slave unit 1 opera...

Page 206: ... 7 7 7 8 7 8 6 Number of connected BS units 2 9 7 7 7 8 8 7 7 Number of connected zone units Fixed to 0 9 7 7 7 8 8 8 8 Number of outdoor units 3 9 7 7 8 7 7 7 9 Number of BS units 4 9 7 7 8 7 7 8 Lower 4 digits upper 10 Number of BS units 4 9 7 7 8 7 8 7 Lower 4 digits lower 11 Number of zone units 9 7 7 8 7 8 8 Lower 6 digits 12 Number of terminal units 5 9 7 7 8 8 7 7 Lower 4 digits upper 13 Nu...

Page 207: ...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 f...

Page 208: ...E 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 209: ...he 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 210: ...b 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 a...

Page 211: ...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 Te...

Page 212: ...en 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 ins...

Page 213: ...tion Setting contents Setting contents indication Initial setting H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P H1P H2P H3P H4P H5P H6P H7P 12 External low noise Demand setting z z z z z z z z z z NO Factory setting z z z z z 9 YES z z z z 9 z 22 Night time low noise setting z z z OFF Factory setting z z z z z z Mode 1 z z z z z 9 Mode 2 z z z z 9 z Mode 3 z z z z 9 9 25 External low noi...

Page 214: ...n on some solenoid valves Operating procedure c With Setting Mode 2 while the unit stops set Refrigerant recovery Vacuuming mode to ON The expansion valves of indoor and outdoor units fully open and some of solenoid valves open H2P blinks to indicate the test operation and the remote controller displays Test Operation and Under centralized control thus prohibiting operation After setting do not ca...

Page 215: ...ded as follows While 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 malfuncti...

Page 216: ...once 8111191 5 Press the CHECK button BS3 twice 8111111 6 Press the PAGE button BS1 once 1181111 LED display 8 ON 1 OFF 9 Blink H1P H7P H8P Outdoor unit 1 1181111 8 Outdoor unit 2 1111111 9 Outdoor unit 3 1111111 1 Factory setting LED display 8 ON 1 OFF 9 Blink Step H1P H7P 1 Press and hold the PAGE button BS1 for 5 sec or more 8111111 2 Press the OPERATE button BS2 38 times 8811881 3 Press the CH...

Page 217: ...p H1P H7P 1 Press and hold the PAGE button BS1 for 5 sec or more 8111111 2 Press the OPERATE button BS2 38 times 8811881 3 Press the CHECK button BS3 once 8111191 4 Press the OPERATE button BS2 once 8111119 Factory setting 5 Press the CHECK button BS3 twice 8111111 6 Press the PAGE button BS1 once 1181111 LED display 8 ON 1 OFF 9 Blink Step H1P H7P 1 Press the PAGE button BS1 for 5 seconds or more...

Page 218: ...8111111 2 Press the OPERATE button BS2 39 times 8811888 3 Press the CHECK button BS3 once 8111191 4 Press the OPERATE button BS2 once 8111119 Factory setting 5 Press the CHECK button BS3 twice 8111111 6 Press the PAGE button BS1 once 1181111 LED display 8 ON 1 OFF 9 Blink Step H1P H7P 1 Press the PAGE button BS1 for 5 seconds or more 8111111 2 Press the OPERATE button BS2 40 times 8818111 3 Press ...

Page 219: ...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 out...

Page 220: ...l 242 3 7 AF Indoor Unit Drain Level above Limit 244 3 8 AJ Indoor Unit Malfunction of Capacity Determination Device 245 3 9 C4 Indoor Unit Malfunction of Thermistor R2T for Heat Exchanger 246 3 10 C5 Indoor Unit Malfunction of Thermistor R3T for Gas Pipes 247 3 11 C9 Indoor Unit Malfunction of Thermistor R1T for Suction Air 248 3 12 CJ Indoor Unit Malfunction of Thermostat Sensor in Remote Contro...

Page 221: ... Unit Malfunction of Transmission between Inverter and Control PC Board 295 3 41 P1 Outdoor Unit Inverter Over Ripple Protection 298 3 42 P4 Outdoor Unit Malfunction of Inverter Radiating Fin Temperature Rise Sensor 300 3 43 PJ Outdoor Unit Faulty Field Setting after Replacing Main PC Board or Faulty Combination of PC Board 302 3 44 U0 Outdoor Unit Gas Shortage Alert 304 3 45 U1 Reverse Phase Open...

Page 222: ...r Centralized Control 337 4 3 MA Improper Combination of Optional Controllers for Centralized Control 338 4 4 MC Address Duplication Improper Setting 340 5 Troubleshooting OP Unified ON OFF Controller 341 5 1 Operation Lamp Blinks 341 5 2 Display Under Centralized Control Blinks Repeats Single Blink 343 5 3 Display Under Centralized Control Blinks Repeats Double Blink 346 ...

Page 223: ...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 cen...

Page 224: ...ation 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 indoo...

Page 225: ...e 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 226: ...ion 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 m...

Page 227: ...alfunction 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 an...

Page 228: ...duct 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 button...

Page 229: ...Troubleshooting by Remote Controller Si37 701 218 Troubleshooting The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed ...

Page 230: ...Si37 701 Troubleshooting by Remote Controller Troubleshooting 219 ...

Page 231: ... III 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 ...

Page 232: ...r 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 233: ...n 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 unit No w...

Page 234: ... 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 INS...

Page 235: ...ver current 257 E7 9 9 9 Malfunction of outdoor unit fan motor 258 E9 9 9 9 Malfunction of moving part of electronic expansion valve Y1E Y2E Y3E 261 F3 9 9 9 Abnormal discharge pipe temperature 263 F6 9 9 9 Refrigerant overcharged 265 F9 9 9 9 Malfunction of BS unit electronic expansion valve 266 H7 9 9 9 Abnormal outdoor fan motor signal 268 H9 9 9 9 Malfunction of thermistor R1T for outdoor air ...

Page 236: ...he same system 322 UA 9 9 9 Improper combination of indoor and outdoor units indoor units and remote controller 323 UC 8 8 8 Address duplication of central remote controller 329 UE 9 9 9 Malfunction of transmission between central remote controller and indoor unit 330 UF 9 9 9 Refrigerant system not set incompatible wiring piping 333 UH 9 9 9 Malfunction of system refrigerant system address undefi...

Page 237: ...nal 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 m...

Page 238: ...7 9 7 7 1 F6 9 7 9 9 7 9 7 7 7 7 9 7 7 9 9 F9 9 9 7 7 9 9 7 7 7 9 9 7 7 9 9 9 7 7 9 7 9 7 7 9 9 9 7 7 9 9 9 7 7 9 9 9 7 9 7 7 9 7 7 9 9 9 7 9 7 9 9 7 7 9 9 J2 9 7 9 9 7 9 7 7 9 7 9 7 7 7 7 9 7 7 1 9 7 7 7 7 9 7 9 9 7 7 7 7 9 7 9 J3 9 7 7 9 9 9 7 7 7 7 9 7 7 9 7 7 7 7 9 7 9 9 7 7 7 7 9 9 7 J4 9 7 9 7 7 9 7 7 7 7 9 7 7 J5 9 7 9 7 9 9 7 7 7 7 9 7 7 J6 9 7 9 9 7 9 7 7 7 7 9 7 7 J7 9 7 9 9 9 9 7 7 7 7 ...

Page 239: ...eversed 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 mo...

Page 240: ...7 9 7 7 9 9 9 7 7 7 7 9 7 9 9 9 U7 9 7 9 9 9 9 7 7 7 7 9 7 7 9 9 9 7 7 7 7 9 7 9 9 9 9 7 7 7 7 9 9 7 9 9 9 7 7 7 7 9 9 9 9 9 9 7 7 7 9 9 7 7 9 9 9 7 7 7 9 9 7 9 9 9 9 7 7 7 9 9 9 7 9 9 9 7 7 7 9 9 9 9 9 9 U9 9 9 7 7 9 9 7 7 7 7 9 7 7 9 9 UA 9 9 7 9 7 9 7 7 7 7 9 9 7 9 9 9 7 7 7 9 9 7 7 9 9 9 7 7 7 9 9 7 9 9 9 9 7 7 9 7 9 7 9 9 9 9 7 7 9 7 9 9 7 9 9 9 7 7 9 9 9 7 9 9 9 9 7 7 9 9 9 9 7 9 9 9 7 7 9 9...

Page 241: ...als 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 N...

Page 242: ...eived 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 unit...

Page 243: ...ion FXMQ200 250M Option FXAQ Option FXMQ MF 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...

Page 244: ...ndoor 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 resetting...

Page 245: ...itions 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 rot...

Page 246: ...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 25 125MVE 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 10...

Page 247: ...en at 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 ...

Page 248: ...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 su...

Page 249: ...imit 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 250: ...ce 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 stop...

Page 251: ... electronic 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 exchan...

Page 252: ...lve 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 Res...

Page 253: ... 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 254: ...ard 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 pr...

Page 255: ... from 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 b...

Page 256: ...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 c...

Page 257: ...nning Supposed Causes Defect of thermistor R2T for liquid pipe Defect of indoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P417 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 t...

Page 258: ...d 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 P417 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 i...

Page 259: ... 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 P417 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 ther...

Page 260: ...uses 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 P417 Clear the malfunction code history While in inspection mode p...

Page 261: ... 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 disc...

Page 262: ...t 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 mai...

Page 263: ...h 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 P350 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 264: ... 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 265: ...ation on P351 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 P419 2 Make measurement of voltage of the pressure sensor Caution Be sure to turn ...

Page 266: ...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 267: ...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 connecti...

Page 268: ...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 I...

Page 269: ... 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 Failu...

Page 270: ...7 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 mo...

Page 271: ...ector 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 mo...

Page 272: ...8P 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 outdoor...

Page 273: ...onic 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 P226 227 for how to ch...

Page 274: ...y 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 temp...

Page 275: ...S 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 P348 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 276: ...nment 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 P417 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 277: ...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 278: ...e 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 refer...

Page 279: ... 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 280: ...re 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 H...

Page 281: ... connection Defect of thermistor R1T for outdoor air Defect of outdoor unit PC board A1P Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P417 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 board...

Page 282: ... 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 C...

Page 283: ... 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 P418 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 the ...

Page 284: ...on of thermistor Defective thermistor Defective outdoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P417 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 8...

Page 285: ... 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 P417 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 t...

Page 286: ... 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 P417 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 the...

Page 287: ...Faulty outdoor unit PC board Defect of thermistor connection Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P417 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 ou...

Page 288: ...Faulty outdoor unit PC board Defect of thermistor connection Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P417 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 outdoo...

Page 289: ...g heat exchanger gas pipe thermistor R5T or R13T Faulty outdoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P417 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 800...

Page 290: ...tion 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 hi...

Page 291: ...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 Set t...

Page 292: ...roubleshooting 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 pressu...

Page 293: ...Troubleshooting by Indication on the Remote Controller Si37 701 282 Troubleshooting 1 Voltage measurement point 2 Refer to Pressure Sensor Pressure Voltage Characteristics table on P419 ...

Page 294: ...ted 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 Cu...

Page 295: ...NO 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 single system applied to the outdoor unit YES NO It is supposed that the malfunction resu...

Page 296: ... 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 297: ...ntrol PC board 3 While in monitor mode check the outdoor unit concerned Single 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 factors In...

Page 298: ...Si37 701 Troubleshooting by Indication on the Remote Controller Troubleshooting 287 Inverter PC board for compressor Refer to Thermistor Resistance Temperature Characteristics table on P417 ...

Page 299: ...EYQ8P 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 300: ... 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 compre...

Page 301: ...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 comp...

Page 302: ... 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 connectio...

Page 303: ...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 304: ...nce 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 YE...

Page 305: ...r 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 Referrin...

Page 306: ... 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 type...

Page 307: ... 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 308: ...ed 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 Y...

Page 309: ...verter 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 minut...

Page 310: ...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 exces...

Page 311: ...on 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 resista...

Page 312: ...Si37 701 Troubleshooting by Indication on the Remote Controller Troubleshooting 301 Inverter PC board for compressor Refer to Thermistor Resistance Temperature Characteristics table on P417 ...

Page 313: ...ntroller 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 boar...

Page 314: ...lace 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 184 Replace it with the correct compressor inverter PC board Was t...

Page 315: ...hanger 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 clogg...

Page 316: ...eplace 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 the...

Page 317: ...pply 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 single systems replace the control PC board 1 A1P or the control PC boar...

Page 318: ...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 circu...

Page 319: ...e 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 320: ...lace 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 A...

Page 321: ...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 322: ...heck 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 Defe...

Page 323: ... the voltage 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 a...

Page 324: ... 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 disconne...

Page 325: ...llers 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 o...

Page 326: ...alfunction 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 uni...

Page 327: ...he slave unit 2 Go on to the Diagnosis Flow 5 Multi connection REYQ 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 co...

Page 328: ... 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 t...

Page 329: ... 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 external control adaptor for outdoor unit is connected to 5V supply line Check if the normal condition monitor LED for the external control adaptor for outdoor unit blinks Set the cooling heating switch of the external control adaptor for outdoor unit to i...

Page 330: ...wires of Multi Slave 2 with outdoor multi Check if the wiring is disconnected or is about to be disconnected Check if the outdoor unit REYQ8 16PY1 is connected to multi system Check 3 Check the connection status of connecting wires of Multi Slave 1 with outdoor multi Check if the wiring is disconnected or is about to be disconnected Replace the outdoor unit main PC board of the Multi Slave 1 Corre...

Page 331: ...or 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 slave unit...

Page 332: ... 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 su...

Page 333: ...sion 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 indicated...

Page 334: ...gerant 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 Mismat...

Page 335: ...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 F...

Page 336: ...he main PC board of the outdoor unit With single 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 the ref...

Page 337: ...s 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 338: ...odel BSVQ P Replace the outdoor unit PC board as shown below With single 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 single systems replace the control PC board 1 A1P With multi systems replace the main PC boar...

Page 339: ...ct 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 340: ...t 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 341: ...ection 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 con...

Page 342: ... 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 b...

Page 343: ... P 352 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 P 352 Disconnect the transmission wiring of the master unit central e...

Page 344: ... 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 345: ...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 boa...

Page 346: ...ct 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 o...

Page 347: ...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 348: ...he 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 central...

Page 349: ...nction 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 contro...

Page 350: ...ntral 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 Repla...

Page 351: ...every 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 352: ...f 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 Malf...

Page 353: ...ter 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 indo...

Page 354: ...ized 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 combination...

Page 355: ...r 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 centra...

Page 356: ...troller 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 se...

Page 357: ...ess 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 358: ...urn 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 Whit...

Page 359: ...ister 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 360: ...e 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 ch...

Page 361: ...nt 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 362: ...re 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 outdoor...

Page 363: ...e 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 364: ...ule 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 Centr...

Page 365: ... 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 contr...

Page 366: ...ion 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 fil...

Page 367: ...erature 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 temperatu...

Page 368: ... 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 369: ...f 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 moisture...

Page 370: ...ive 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 suppl...

Page 371: ...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 overcurren...

Page 372: ...nit 396 3 2 Indoor Side 401 4 Option List 407 4 1 Option List of Controllers 407 4 2 Option Lists Outdoor Unit 409 5 Piping Installation Point 410 5 1 Piping Installation Point 410 5 2 The Example of a Wrong Pattern 411 6 Example of Connection R 410A Type 413 7 Thermistor Resistance Temperature Characteristics 417 8 Pressure Sensor 419 9 Method of Checking the Inverter s Power Transistors and Diod...

Page 373: ...Piping Diagrams Si37 701 362 Appendix 1 Piping Diagrams 1 1 Outdoor Unit REYQ8P 10P 12PY1 3D058154A S1NPH S2NPL ...

Page 374: ...Si37 701 Piping Diagrams Appendix 363 REYQ14P 16PY1 3D058153A S2NPL S1NPH ...

Page 375: ...Piping Diagrams Si37 701 364 Appendix REMQ8PY1 3D057743 ...

Page 376: ...Si37 701 Piping Diagrams Appendix 365 REMQ10PY1 12PY1 3D057742 ...

Page 377: ...Piping Diagrams Si37 701 366 Appendix REMQ14PY1 16PY1 3D057741 ...

Page 378: ...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 379: ...Piping Diagrams Si37 701 368 Appendix FXZQ Refrigerant pipe connection port diameters mm Model Gas Liquid FXZQ20M 25M 32M 40M 50M φ12 7 φ6 4 ...

Page 380: ...Si37 701 Piping Diagrams Appendix 369 FXDQ Refrigerant pipe connection port diameters 4D043864H mm Model Gas Liquid FXDQ20N A P 25N A P 32N A P 40N A 50N A VE T φ12 7 φ6 4 FXDQ63N A VE T φ15 9 φ9 5 ...

Page 381: ...e connection port diameters mm Model Gas Liquid FXDYQ80M 100M 125M 145MV1 φ 15 9 φ 9 5 FXDYQ180M 200M φ 19 1 φ 9 5 FXDYQ250M φ 22 2 φ 9 5 M Heat exchanger Fan Filter Filter Gas pipe connection port Liquid pipe connection port Electronic expansion valve 4PDA0350 ...

Page 382: ...Si37 701 Piping Diagrams Appendix 371 1 3 BS Unit 4D057985A ...

Page 383: ...Wiring Diagrams for Reference Si37 701 372 Appendix 2 Wiring Diagrams for Reference 2 1 Outdoor Unit REYQ8 10 12PY1 3D056775D ...

Page 384: ...Si37 701 Wiring Diagrams for Reference Appendix 373 REYQ14 16PY1 3D056774C ...

Page 385: ...Wiring Diagrams for Reference Si37 701 374 Appendix REMQ8PY1 3D055307E ...

Page 386: ...Si37 701 Wiring Diagrams for Reference Appendix 375 REMQ10 12PY1 3D055308E ...

Page 387: ...Wiring Diagrams for Reference Si37 701 376 Appendix REMQ14P 16PY1 3D055309E ...

Page 388: ...Si37 701 Wiring Diagrams for Reference Appendix 377 2 2 Field Wiring REYQ8P 10P 12P 14P 16PY1 3D057764 ...

Page 389: ...Wiring Diagrams for Reference Si37 701 378 Appendix REYQ18P 20P 22P 24P 26P 28P 30P 32PY1 3D057762 ...

Page 390: ...Si37 701 Wiring Diagrams for Reference Appendix 379 REYQ34P 36P 38P 40P 42P 44P 46P 48PY1 3D057763 ...

Page 391: ...Wiring Diagrams for Reference Si37 701 380 Appendix 2 3 Indoor Unit FXCQ20M 25M 32M 63MVE 3D039556A ...

Page 392: ...Si37 701 Wiring Diagrams for Reference Appendix 381 FXCQ40M 50M 80M 125MVE 3D039557A ...

Page 393: ...Wiring Diagrams for Reference Si37 701 382 Appendix FXFQ25M 32M 40M 50M 63M 80M 100M 125MVE 3D039600A ...

Page 394: ...Si37 701 Wiring Diagrams for Reference Appendix 383 FXZQ20M 25M 32M 40M 50M8V1B 3D038359 ...

Page 395: ...Wiring Diagrams for Reference Si37 701 384 Appendix FXKQ25MA 32MA 40MA 63MAVE 3D039564C ...

Page 396: ...Si37 701 Wiring Diagrams for Reference Appendix 385 FXDQ20P 25P 32P FXDQ20NA 25NA 32NA 40NA 50NA 63NAVE with Drain Pump 3D045500C ...

Page 397: ...Wiring Diagrams for Reference Si37 701 386 Appendix FXDQ20P 25P 32P FXDQ20N 25N 32N 40N 50N 63NVET without Drain Pump 3D049604A ...

Page 398: ...OUNDTHESHIELD OFTHE REMOTECONTROLLERCORDTO THE INDOOR UNIT NOTES 1 TERMINAL CONNECTOR FIELD WIRING PLUG ANDSOCKET WIRECLAMP X18A X7A Y1E INPUTFROM OUTSIDE NOTE 3 TRANSMISSION WIRING CENTRAL REMOTECONTROLLER P2 P1 R1T WIRED REMOTE CONTROLLER OPTIONALACCESSORY See Note 4 F1U F2U RED RED X3M X4A High Std see table X8A A1P PRINTED CIRCUIT BOARD C1R FAN CAPACITOR See table F1U FUSE HOLDER See table F2U...

Page 399: ...Wiring Diagrams for Reference Si37 701 388 Appendix FXDYQ180M 200M 250MV1 ...

Page 400: ...Si37 701 Wiring Diagrams for Reference Appendix 389 FXSQ20M 25M 32M 40M 50M 63M 80M 100M 125MVE 3D039561B ...

Page 401: ...Wiring Diagrams for Reference Si37 701 390 Appendix FXMQ40MA 50MA 63MA 80MA 100MA 125MAVE 3D039620B ...

Page 402: ...Si37 701 Wiring Diagrams for Reference Appendix 391 FXMQ200MA 250MAVE 3D039621B ...

Page 403: ...Wiring Diagrams for Reference Si37 701 392 Appendix FXHQ32MA 63MA 100MAVE 3D039801D ...

Page 404: ...Si37 701 Wiring Diagrams for Reference Appendix 393 FXAQ20MA 25MA 32MAVE 40MA 50MA 63MAVE 3D034206D ...

Page 405: ...Wiring Diagrams for Reference Si37 701 394 Appendix FXLQ20MA 25MA 32MA 40MA 50MA 63MAVE FXNQ20MA 25MA 32MA 40MA 50MA 63MAVE 3D039826D ...

Page 406: ...Si37 701 Wiring Diagrams for Reference Appendix 395 2 4 BS Unit 3D055928C ...

Page 407: ...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 th...

Page 408: ...2E 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 Inver...

Page 409: ...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 For M3C S3PH Low pressure sensor SENPL OFF 0 07MPa Temperature protection Discharge gas temperature protection Discharge pipe thermistor R3T OFF 135 C Inverter fin temperature protection Radia...

Page 410: ... 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 fin ...

Page 411: ...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 O...

Page 412: ...changer 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 20MVE FXCQ 25MVE FXCQ 32MVE FXCQ 40MVE FXCQ 50MVE FXCQ 63MVE FXCQ 80MVE FXCQ 125MVE Remote Controller Wired Remote Controller BRC1C62 Option Wireless Remote Controller BRC7C62 Motors Fan Motor M1F AC 220 240V 50Hz 1φ10W 1φ15W 1φ20W 1φ3...

Page 413: ...AC 220 240V 50Hz 1φ55W 4P Thermal Fuse 135 C Capacitor fan motor C1 4 0µ F 400VAC Drain Pump M1P AC220 240V 50Hz PLD 12230DM Thermal Fuse 145 C Swing Motor M1S MP35HCA 3P080801 1 AC200 240V Thermistors Thermistor Suction Air R1T ST8601A 1 φ4 L250 20kΩ 25 C Thermistor for Heat Exchanger High Temp R3T ST8605 3 φ8 L630 20kΩ 25 C Thermistor Heat Exchanger R2T ST8602A 3 φ6 L630 20kΩ 25 C Others Float S...

Page 414: ... ST8605 7 φ8 L1600 20kΩ 25 C Thermistor Heat Exchanger R2T ST8602A 7 φ6 L1600 20kΩ 25 C Others Float Switch S1L FS 0211B Fuse F1U 250V 5A φ5 2 Transformer T1R TR22H21R8 Parts Name Symbol Model Remark FXDQ 20N A VE T PVE T FXDQ 25N A VE T PVE T FXDQ 32N A VE T PVE T FXDQ 40N A VE T FXDQ 50N A VE T FXDQ 63N A VE T Remote Controller Wired Remote Controller BRC1C62 Option Wireless Remote Controller BR...

Page 415: ...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 BRC1C62 Option Wireless Remote Controller BRC4C62 Motors Fan Motor M1F AC 220 240V 50Hz 1φ100W 1φ160W 1φ270W 1φ430W 1φ380W 2 Thermal protecto...

Page 416: ...0 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 BRC1C62 Option Wireless Remote Controller BRC7E618 Motors Fan Motor M1F AC 220 240V 50Hz 1φ40W 1φ4...

Page 417: ... 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 BRC1C62 Option Wireless Remote Controller BRC4C62 Motors Fan Motor M1F AC 220 240V 50Hz 1φ15W 1φ25W 1φ35W Thermal protector...

Page 418: ...ring KRP1B56 KRP1B57 KRP1B59 KRP1B61 KRP1C3 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 419: ...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 DEC101A51 8 pairs based on a pair of On Off input and abnormality input 2 6 Dio unit DEC102A51 4 pairs based on a pair of On Off input and abnormality input 3 Communication line 1 Interface for use in BACnet DMS5...

Page 420: ...Q26PY1E REYQ28PY1E REYQ30PY1 REYQ32PY1 REYQ30PY1E REYQ32PY1E 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 KWC26C280E KWC26C450E KWC26C450 2 K...

Page 421: ...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 ca...

Page 422: ...rong 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 415 Note 2 in ca...

Page 423: ...Piping Installation Point Si37 701 412 Appendix ...

Page 424: ...s 165m Example 6 a b 165m 8 a m n p 165m Example 8 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 outdoo...

Page 425: ...5M33H KHRP25M72H KHRP25M72HP KHRP25M73H KHRP25M73HP 2 pipes KHRP26M22H 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 ...

Page 426: ...ize at φ6 4 0 37 0 18 0 059 0 26 0 12 0 022 1 02 Example for refrigerant branch using REFNET joint and REFNET header for the systems and each pipe length as shown below Outdoor system REYQ34PY1 Total capacity of indoor unit 116 R 50 0 26 1 0 18 3 0 12 156 0 059 20 0 022 1 02 3 0 0 5 a φ19 1 30m b φ19 1 20m c φ9 5 10m d φ9 5 10m e φ9 5 10m f φ9 5 10m g φ9 5 10m h φ9 5 10m i φ9 5 10m j φ9 5 10m k φ9...

Page 427: ...Example of Connection R 410A Type Si37 701 416 Appendix ...

Page 428: ...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 429: ... 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 430: ... 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 431: ... for the checking Test points 1 Turn OFF the power supply Then after a lapse of 10 minutes or more make measurement of resistance Preparation 1 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 432: ... 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 Measur...

Page 433: ...Method of Checking the Inverter s Power Transistors and Diode Modules Si37 701 422 Appendix ...

Page 434: ... 701 Precautions for New Refrigerant R 410A 423 Part 8 Precautions for New Refrigerant R 410A 1 Precautions for New Refrigerant R 410A 424 1 1 Outline 424 1 2 Refrigerant Cylinders 426 1 3 Service Tools 427 ...

Page 435: ...opic 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 az...

Page 436: ...New Refrigerant R 410A 425 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 437: ...ined 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 th...

Page 438: ...ffers for R 410A and R 407C Charging cylinder 2Weighting instrument used for HFCs Gas detector 2The same tool can be used for HFCs Vacuum pump pump with reverse flow preventive function 2To use existing pump for HFCs vacuum pump adaptor must be installed Weighting instrument Charge mouthpiece 2Seal material is different between R 22 and HFCs 2Thread specification is different between R 410A and ot...

Page 439: ... 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 1...

Page 440: ...d 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 2 Suction port UNF7 16 20 1 4 Flare 100 7 kPa 5 torr 755 mmHg UNF1 2 20 5 16 Flare with adapter Differences 2 Equipped with function to prevent reverse oil flow 2 Previous vacuum pump can be used by installing adapter Nominal size Class 1 Class 2 Previous...

Page 441: ...drogen 5 Refrigerant oil Air compal Specifications 2 Contains synthetic oil therefore it can be used for piping work of every refrigerant cycle 2 Offers high rust resistance and stability over long period of time Differences 2 Can be used for R 410A and R 22 units 6 Gauge manifold for R 410A Specifications 2 High pressure gauge 0 1 to 5 3 MPa 76 cmHg to 53 kg cm2 2 Low pressure gauge 0 1 to 3 8 MP...

Page 442: ...e with and without hand operate valve that prevents refrigerant from outflow Differences 2 Pressure proof hose 2 Change in service port diameter 2 Use of nylon coated material for HFC resistance 8 Charging cylinder Specifications 2 Use weigher for refrigerant charge listed below to charge directly from refrigerant cylinder Differences 2 The cylinder can not be used for mixed refrigerant since mixi...

Page 443: ... liquid refrigerant charging 2 A manifold with separate ports for HFCs and previous refrigerants is equipped as standard accessories Differences 2 Measurement is based on weight to prevent change of mixing ratio during charging 10 Charge mouthpiece Specifications 2 For R 410A 1 4 5 16 2min 2 5min 2 Material is changed from CR to H NBR Differences 2 Change of thread specification on hose connection...

Page 444: ...erheat Operation 348 CJ 249 Concept of Inverter related Malfunction Codes 360 Cooling Only Heat pump Setting 184 Current Sensor Malfunction 271 D Defective Inverter PC Board 283 Detailed Explanation of Setting Modes 174 Display Under Centralized Control Blinks Repeats Double Blink 346 Display Under Centralized Control Blinks Repeats Single Blink 343 Drain Level above Limit 244 E E1 250 E3 251 E4 2...

Page 445: ...function of Thermistor R1T for Suction Air 248 Malfunction of Thermistor R2T for Heat Exchanger 246 Malfunction of Thermistor R3T for Gas Pipes 247 Malfunction of Thermistor R4T or R12T for Outdoor Unit Heat Exchanger 275 Malfunction of Thermistor R8T or R10T for Suction Pipe 274 Malfunction of Thermostat Sensor in Remote Controller 249 Malfunction of Transmission between Centralized Controller an...

Page 446: ...184 Setting by Push Button Switches 188 Setting Mode 1 190 Setting Mode 2 191 STD Compressor Motor Overcurrent Lock 257 Symptom based Troubleshooting 212 System is not Set yet 333 T The Example of a Wrong Pattern 411 Transmission Failure Across Outdoor Units 315 Troubleshooting OP Central Remote Controller 336 Troubleshooting OP Unified ON OFF Controller 341 U U0 304 U1 306 U2 307 U3 310 U4 311 U5...

Page 447: ...Si37 701 iv Index ...

Page 448: ...02 Discharge Pipe Protection Control 128 Display Under Centralized Control Blinks Repeats Double Blink 346 Display Under Centralized Control Blinks Repeats Single Blink 343 Drain Level above Limit 244 Drain Pump Control 139 When the Float Switch is Tripped and AF is Displayed on the Remote Controller 140 When the Float Switch is Tripped During Heating Operation 140 When the Float Switch is Tripped...

Page 449: ...Transmission between Centralized Controller and Indoor Unit 330 Malfunction of Transmission between Indoor and Outdoor Units in the Same System 322 Malfunction of Transmission between Indoor Units 311 Malfunction of Transmission between Inverter and Control PC Board 295 Malfunction of Transmission between Main and Sub Remote Controllers 321 Malfunction of Transmission between Optional Controllers ...

Page 450: ...oller 171 BRC2A51 BRC2C51 171 STD Compressor Motor Overcurrent Lock 257 STD Compressor Overload Protection 131 System is not Set yet 333 T Test Operation 148 Thermostat Sensor in Remote Controller 135 Cooling 135 Heating 136 Transmission Failure Across Outdoor Units 315 Troubleshooting OP Central Remote Controller 336 Troubleshooting OP Unified ON OFF Controller 341 Troubleshooting by Remote Contr...

Page 451: ...Si37 701 viii Drawings Flow Charts ...

Page 452: ...i37 701 Printed in Japan 09 2007 AK Specifications designs and other content appearing in this brochure are current as of September 2007 but subject to change without notice http www daikin com global_ac ...

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