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Daikin VRV III RXYQ5-54PY1, Service Manual


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Si34-601A

Troubleshooting by Indication on the Remote Controller

Troubleshooting

237

Troubleshooting

NO

YES

YES

YES

NO

NO

YES

NO

YES

NO

+5V

(4)

(3)

(2)

(1)

Check for the points shown below.

 

Is the stop valve open?

 

Is the HPS connector properly connected to the

main PCB?

 

Does the high pressure switch have continuity?

Are the

three points above

OK?

Rectify defective points, if any.

· Mount a pressure gauge on the high-pressure service port.
· Connect the Service Checker.
· Reset the operation using the remote controller,

and then restart the operation.

Does the stop

due to malfunction (E3) 

recur?

Is the HPS

operating value normal

(i.e., 4.0MPa)?

Are the

characteristics of the high

pressure sensor normal?

(See *1.)

Replace the HPS.

Replace the high pressure sensor.

Is the

pressure detected with

the PCB normal?

(See *2.)

Replace the main PCB.

· The high pressure sensor is normal, and the pressure detected with the PCB is also normal.
· The high pressure has really become high.

CHECK 3

Referring to information on page 312, 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 measurement of voltage at the connector, 
and then convert it to pressure according to information on page 367.)

*2: Make a comparison between the high pressure value checked with the Service Checker 

and the voltage of the pressure sensor (see *1).

*3: Make measurement of voltage of the pressure sensor.

Connector for high

pressure sensor (Red)

High

pressure

sensor

Micro controller

A/D input

Make measurement of DC

voltage between these wires.

Red

Black

White

Caution

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

Summary of Contents for VRV III RXYQ5-54PY1

Page 1: ...RXYQ5 54PY1 R 410A Heat Pump 50Hz Si34 601A...

Page 2: ...Refrigerant Circuit 60 1 1 RXYQ5P 60 1 2 RXYQ8P 62 1 3 RXYQ10P 12P 64 1 4 RXYQ14P 16P 18P 66 1 5 Outdoor air processing unit FXMQ125MFV1 250MFV1 68 2 Functional Parts Layout 69 2 1 RXYQ5P 69 2 2 RXYQ8...

Page 3: ...Ceiling Dirt 131 6 3 Thermostat Sensor in Remote Controller 132 6 4 Thermostat Control While in Normal Operation 134 6 5 Thermostat Control in Dry Operation 134 6 6 Electronic Expansion Valve Control...

Page 4: ...Motor Lock 240 3 17 E6 Outdoor Unit STD Compressor Motor Overcurrent Lock 242 3 18 E7 Outdoor Unit Malfunction of Outdoor Unit Fan Motor 243 3 19 E9 Outdoor Unit Malfunction of Moving Part of Electron...

Page 5: ...of Indoor and Outdoor Units Indoor Units and Remote Controller 288 3 50 UC Address Duplication of Centralized Controller 290 3 51 UE Malfunction of Transmission Between Centralized Controller and Ind...

Page 6: ...of connection R 410A Type 363 7 Thermistor Resistance Temperature Characteristics 365 8 Pressure Sensor 367 9 Method of Checking The Inverter s Power Transistors and Diode Modules 368 Part 8 Precauti...

Page 7: ...lug 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 equipmen...

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 o...

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...

Page 10: ...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...

Page 11: ...series Heat Pump 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 th...

Page 12: ...1A 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 Sele...

Page 13: ...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 Mounted Built In Type FXSQ 20M 25M 32M 40M 50M 63M 80M 100M 125M Ceili...

Page 14: ...50MA 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...

Page 15: ...tion 2 2 Outdoor Units RXYQ5P RXYQ8P 10P 12P EUROPE RXYQ20P 22P 24P 26P 28P RXYQ30P 32P 34P 36P RXYQ38P 40P 42P 44P 46P RXYQ48P 50P 52P 54P RXYQ12P 14P 16P 18P 5HP 8 10HP 12 14 16 18HP 20 22 24 26 28H...

Page 16: ...n Outdoor Unit Multi Connection Piping Kit is required System Capacity Number of units Module Outdoor Unit Multi Connection Piping Kit Option 5 8 10 12 14 16 18 5HP 1 8HP 1 10HP 1 12HP 1 14HP 1 16HP 1...

Page 17: ...m or more an optional Daikin Outdoor Unit Multi Connection Piping Kit is required System Capacity Number of units Module Outdoor Unit Multi Connection Piping Kit Option 8 10 12 14 16 18 16HP 2 Heat Pu...

Page 18: ...connectable indoor units 32 35 39 42 45 48 52 Total capacity of connectable indoor units kW 27 95 72 67 30 75 79 95 33 60 87 36 36 40 94 64 39 15 101 79 41 95 109 07 44 70 116 22 HP 34HP 36HP 38HP 40H...

Page 19: ...indoor units kW 33 60 87 36 36 40 94 64 39 15 101 79 41 95 109 07 44 70 116 22 HP 34HP 36HP 38HP 40HP 42HP 44HP 46HP System name RXYQ34PH RXYQ36PH RXYQ38PH RXYQ40PH RXYQ42PH RXYQ44PH RXYQ46PH Outdoor...

Page 20: ...ulti Flow FXFQ 25M 32M 40M 50M 63M 80M 100M 125M 600 600 Ceiling Mounted Cassette Type Multi Flow FXZQ 20M 25M 32M 40M 50M Ceiling Mounted Cassette Corner Type FXKQ 25MA 32MA 40MA 63MA Slim Ceiling Mo...

Page 21: ...S Workability Equalizer oil pipe for multi outdoor unit system z NONE z YES Procedure for calculating refrigerant refilling quantity z Refilling quantity due to piping length Adjustment quantity accor...

Page 22: ...Si34 601A Specifications 11 Part 2 Specifications 1 Specifications 12 1 1 Outdoor Units 12 1 2 Indoor Units 33...

Page 23: ...Revolutions r p m 6300 7980 Motor Output Number of Units kW 2 8 1 3 8 1 Starting Method Soft Start Soft Start Fan Type Propeller Fan Propeller Fan Motor Output kW 0 35 1 0 75 1 Air Flow Rate m min 95...

Page 24: ...r of Revolutions r p m 6300 2900 6300 2900 Motor Output Number of Units kW 1 2 4 5 1 2 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...

Page 25: ...r of Revolutions r p m 6300 2900 2 6300 2900 2 Motor Output Number of Units kW 0 3 4 5 4 5 1 1 4 4 5 4 5 1 Starting Method Soft Start Soft Start Fan Type Propeller Fan Propeller Fan Motor Output kW 0...

Page 26: ...53 10 53 13 72 13 72 10 53 Number of Revolutions r p m 7980 2900 2900 7980 6300 2900 Motor Output Number of Units kW 3 0 4 5 4 5 1 3 8 1 2 5 4 5 1 Starting Method Soft Start Soft Start Fan Type Prope...

Page 27: ...53 13 72 10 53 13 72 13 72 10 53 10 53 Number of Revolutions r p m 6300 2900 6300 2900 7980 6300 2900 2 Motor Output Number of Units kW 1 2 4 5 1 2 5 4 5 1 3 8 1 1 4 4 5 4 5 1 Starting Method Soft St...

Page 28: ...53 10 53 13 72 10 53 13 72 10 53 10 53 Number of Revolutions r p m 7980 7980 2900 2900 6300 2900 7980 2900 2 Motor Output Number of Units kW 3 8 1 3 0 4 5 4 5 1 1 2 4 5 1 3 0 4 5 4 5 1 Starting Method...

Page 29: ...2 10 53 10 53 13 72 10 53 10 53 Number of Revolutions r p m 6300 2900 7980 2900 2900 6300 2900 2900 6300 2900 2900 Motor Output Number of Units kW 2 5 4 5 1 3 0 4 5 4 5 1 1 4 4 5 4 5 1 1 4 4 5 4 5 1 S...

Page 30: ...10 53 10 53 13 72 10 53 10 53 Number of Revolutions r p m 6300 2900 2900 7980 2900 2900 7980 2900 2900 7980 2900 2900 Motor Output Number of Units kW 1 4 4 5 4 5 1 3 0 4 5 4 5 1 3 0 4 5 4 5 1 3 0 4 5...

Page 31: ...72 10 53 10 53 13 72 10 53 10 53 Number of Revolutions r p m 7980 6300 2900 7980 2900 2900 7980 6300 2900 2900 6300 2900 2900 Motor Output Number of Units kW 3 8 1 2 5 4 5 1 3 0 4 5 4 5 1 3 8 1 1 4 4...

Page 32: ...3 72 10 53 10 53 13 72 10 53 10 53 Number of Revolutions r p m 7980 6300 2900 2900 7980 2900 2900 7980 7980 2900 2 7980 2900 2900 Motor Output Number of Units kW 3 8 1 1 4 4 5 4 5 1 3 0 4 5 4 5 1 3 8...

Page 33: ...10 53 10 53 13 72 10 53 10 53 Number of Revolutions r p m 6300 2900 7980 2900 2900 7980 2900 2900 6300 2900 7980 2900 2900 7980 2900 2900 Motor Output Number of Units kW 1 2 4 5 1 3 0 4 5 4 5 1 3 0 4...

Page 34: ...10 53 10 53 13 72 10 53 10 53 Number of Revolutions r p m 6300 2900 2 7980 2900 2900 7980 2900 2900 6300 2900 2 7980 2900 2900 7980 2900 2900 Motor Output Number of Units kW 0 3 4 5 4 5 1 3 0 4 5 4 5...

Page 35: ...ger Cross Fin Coil Comp Type Hermetically Sealed Scroll Type Piston Displacement m h 13 72 10 53 10 53 13 72 10 53 10 53 13 72 10 53 10 53 Number of Revolutions r p m 7980 2900 2900 7980 2900 2900 798...

Page 36: ...Piston Displacement m h 13 72 13 72 13 72 13 72 10 53 Number of Revolutions r p m 7980 7980 7980 6300 2900 Motor Output Number of Units kW 3 8 1 3 8 1 3 8 1 1 2 4 5 1 Starting Method Soft start Soft s...

Page 37: ...3 72 13 72 13 72 13 72 13 72 10 53 Number of Revolutions r p m 7980 7980 7980 7980 7980 6300 2900 Motor Output Number of Units kW 3 8 1 3 8 1 3 8 1 3 8 1 3 8 1 1 2 4 5 1 Starting Method Soft start Sof...

Page 38: ...53 13 72 13 72 10 53 13 72 10 53 Number of Revolutions r p m 7980 7980 6300 2900 7980 6300 2900 6300 2900 Motor Output Number of Units kW 3 8 1 3 8 1 2 5 4 5 1 3 8 1 1 2 4 5 1 2 5 4 5 1 Starting Metho...

Page 39: ...10 53 13 72 10 53 13 72 10 53 Number of Revolutions r p m 7980 6300 2900 6300 2900 6300 2900 6300 2900 6300 2900 Motor Output Number of Units kW 3 8 1 2 5 4 5 1 2 5 4 5 1 1 2 4 5 1 2 5 4 5 1 2 5 4 5 1...

Page 40: ...72 10 53 13 72 10 53 10 53 Number of Revolutions r p m 6300 2900 6300 2900 6300 2900 6300 2900 6300 2900 6300 2900 2900 Motor Output Number of Units kW 2 5 4 5 1 2 5 4 5 1 2 5 4 5 1 2 5 4 5 1 2 5 4 5...

Page 41: ...2 10 53 13 72 10 53 10 53 Number of Revolutions r p m 6300 2900 6300 2900 6300 2900 2900 6300 2900 6300 2900 7980 2900 2900 Motor Output Number of Units kW 2 5 4 5 1 2 5 4 5 1 1 4 4 5 4 5 1 2 5 4 5 1...

Page 42: ...10 53 13 72 10 53 10 53 Number of Revolutions r p m 6300 2900 6300 2900 2900 6300 2900 2900 6300 2900 6300 2900 2900 7980 2900 2900 Motor Output Number of Units kW 2 5 4 5 1 1 4 4 5 4 5 1 1 4 4 5 4 5...

Page 43: ...53 13 72 10 53 10 53 Number of Revolutions r p m 6300 2900 2900 6300 2900 2900 6300 2900 2900 6300 2900 2900 6300 2900 2900 7980 2900 2900 Motor Output Number of Units kW 1 4 4 5 4 5 1 1 4 4 5 4 5 1 1...

Page 44: ...l Urethane Foam Piping Connections Liquid Pipes mm 6 4 Flare Connection 6 4 Flare Connection 6 4 Flare Connection 6 4 Flare Connection Gas Pipes mm 12 7 Flare Connection 12 7 Flare Connection 12 7 Fla...

Page 45: ...s Wool Urethane Foam Piping Connections Liquid Pipes mm 6 4 Flare Connection 9 5 Flare Connection 9 5 Flare Connection 9 5 Flare Connection Gas Pipes mm 12 7 Flare Connection 15 9 Flare Connection 15...

Page 46: ...lyurethane Form Polyurethane Form Polyurethane Form Polyurethane Form Piping Connections Liquid Pipes mm 6 4 Flare Connection 6 4 Flare Connection 6 4 Flare Connection 6 4 Flare Connection Gas Pipes m...

Page 47: ...ion Material Polyurethane Form Polyurethane Form Polyurethane Form Polyurethane Form Piping Connections Liquid Pipes mm 9 5 Flare Connection 9 5 Flare Connection 9 5 Flare Connection 9 5 Flare Connect...

Page 48: ...r Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed Polyethylene Foamed Polystyrene Foamed Polyethylene Pi...

Page 49: ...353 Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing Thermal Insulation Material...

Page 50: ...tion 6 4 Flare Connection 6 4 Flare Connection 9 5 Flare Connection Gas Pipes mm 12 7 Flare Connection 12 7 Flare Connection 12 7 Flare Connection 15 9 Flare Connection Drain Pipe mm VP25 External Dia...

Page 51: ...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 Heatin...

Page 52: ...ate 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 an...

Page 53: ...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 Coo...

Page 54: ...30 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...

Page 55: ...62 1 62 1 62 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 Ther...

Page 56: ...Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absor...

Page 57: ...ct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Ab...

Page 58: ...e Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Sound Absorbing...

Page 59: ...Flow Rate H L 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 50 60Hz Pa 157 157 118 108 4 157 157 118 108 4 157 157 118 108 4 157 160 108 98 4 Drive...

Page 60: ...Sirocco Fan Motor Output Number of Units W 270 1 430 1 380 2 380 2 Air Flow Rate H L 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 50 60Hz P...

Page 61: ...ve Direct Drive Direct Drive Direct Drive Temperature Control Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling and Heating Microprocessor Thermostat for Cooling...

Page 62: ...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 M...

Page 63: ...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 Heati...

Page 64: ...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 Microproce...

Page 65: ...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 Micr...

Page 66: ...8 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 Mic...

Page 67: ...14 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 Hea...

Page 68: ...iping Connections Liquid Pipes mm 9 5 Flare Connection 9 5 Flare Connection 9 5 Flare Connection Gas Pipes mm 15 9 Flare Connection 15 9 Flare Connection 15 9 Flare Connection Drain Pipe mm I D 20 O D...

Page 69: ...D mm 470 744 1 100 470 1 380 1 100 470 1 380 1 100 Coil Cross Fin Coil Rows Stages Fin Pitch mm 3 26 2 0 3 26 2 0 3 26 2 0 Face Area m 0 28 0 65 0 65 Fan Model D13 4G2DA1 D13 4G2DA1 D13 4G2DA1 Type S...

Page 70: ...XYQ5P 60 1 2 RXYQ8P 62 1 3 RXYQ10P 12P 64 1 4 RXYQ14P 16P 18P 66 1 5 Outdoor air processing unit FXMQ125MFV1 250MFV1 68 2 Functional Parts Layout 69 2 1 RXYQ5P 69 2 2 RXYQ8P 70 2 3 RXYQ10P 12P 12P EUR...

Page 71: ...S1NPL Low pressure sensor Used to detect low pressure P S1PH HP pressure switch For INV compressor In order to prevent the increase of high pressure when a malfunction occurs this switch is activated...

Page 72: ...Si34 601A Refrigerant Circuit Refirgerant Circuit 61 RXYQ5P 3D050782 5 6 2 K T E D M N A P O W G J 4 3 1...

Page 73: ...alfunction occurs this switch is activated at high pressure of 4 0 MPa or more to stop the compressor operation T Pressure regulating valve Liquid pipe This valve opens at a pressure of 4 0 MPa for pr...

Page 74: ...Si34 601A Refrigerant Circuit Refirgerant Circuit 63 RXYQ8P 3D050783 5 7 6 2 3 1 4 D N A P M O W T E F V G J...

Page 75: ...0 MPa or more to stop the compressor operation Q S2PH HP pressure switch For STD compressor 1 U Pressure regulating valve Liquid pipe This valve opens at a pressure of 4 0 MPa for prevention of pressu...

Page 76: ...Si34 601A Refrigerant Circuit Refirgerant Circuit 65 RXYQ10P 12P 3D050784 8 6 F V G 7 J O X B Q D M N U W A P 2 4 3 1 5 E...

Page 77: ...For STD compressor 1 R S3PH HP pressure switch For STD compressor 2 U Pressure regulating valve Liquid pipe This valve opens at a pressure of 4 0 MPa for prevention of pressure increase thus resultin...

Page 78: ...Si34 601A Refrigerant Circuit Refirgerant Circuit 67 RXYQ14P 16P 18P O X Y B C R W A 7 9 8 2 1 3D050785 5 6 4 3 M N U E F V G J P Q D...

Page 79: ...alve Used to bypass hot gas while in heating with thermostat OFF C Capillary tube Used to reduce pressure from high to low in bypassing hot gas Code Symbol Name Main function Th1 R1T Suction air tempe...

Page 80: ...an Front View THERMISTOR ACCUMULATOR Accumulator ass y Heat exchanger THERMISTOR THERMISTOR R7T THERMISTOR Pressure switch High pressure protection S1PH Solenoid valve Accumulator oil return Y2S THERM...

Page 81: ...ayout Si34 601A 70 Refirgerant Circuit 2 2 RXYQ8P Plan Front View THERMISTOR Accumulator High pressure sensor S1NPH Heat exchanger THERMISTOR THERMISTOR THERMISTOR THERMISTOR THERMISTOR THERMISTOR ELE...

Page 82: ...al Parts Layout Refirgerant Circuit 71 2 3 RXYQ10P 12P 12P EUROPE Plan Front View THERMISTOR THERMISTOR Accumulator Heat exchanger THERMISTOR THERMISTOR THERMISTOR THERMISTOR THERMISTOR THERMISTOR ELE...

Page 83: ...CH HIGHPRESSUREPROTECTION S2PH PRESSURESWITCH HIGHPRESSUREPROTECTION S1PH THERMISTOR M2C DISCHARGEPIPE R32T Accumulator Heat exchanger M2C M1C R2T M1C M2C E1HC Y2S S1NPL R6T R4T Y1S Y3S Y1E R7T Y2E R5...

Page 84: ...Parts Layout Refirgerant Circuit 73 2 5 RXYQ14P 16P 18P Plan Front View THERMISTOR THERMISTOR THERMISTOR Accumulator Heat exchanger THERMISTOR THERMISTOR THERMISTOR THERMISTOR ELECTRONIC ELECTRONIC T...

Page 85: ...stat OFF Indoor unit Electronic expansion valve EV 0pls Filter Filter Heat exchanger Fan OFF Indoor unit OFF Electronic expansion valve EV 0pls Filter Filter Heat exchanger Fan ON Thermostat ON Indoor...

Page 86: ...Electronic expansion valve EV Nomal Filter Filter Heat exchanger Indoor unit Electronic expansion valve EV 224pls Filter Filter Heat exchanger Fan ON Fan OFF Fan ON Thermostat ON Indoor unit High temp...

Page 87: ...an OFF Indoor unit Thermostat OFF Indoor unit Indoor unit Indoor unit operation OFF ON ON High temperature high pressure gas High temperature high pressure liquid Low temperature low pressure Electron...

Page 88: ...FF Indoor unit Electronic expansion valve Filter Filter Heat exchanger Fan OFF Indoor unit Electronic expansion valve Filter Filter Heat exchanger Fan ON Thermostat ON Indoor unit High temperature hig...

Page 89: ...Filter Heat exchanger Fan OFF Indoor unit Filter Filter Heat exchanger Fan ON Fan ON Thermostat ON Indoor unit High temperature high pressure gas High temperature high pressure liquid Low temperature...

Page 90: ...F Indoor unit Filter Filter Heat exchanger Indoor unit Filter Filter Heat exchanger Fan ON Fan OFF Fan ON Thermostat ON Indoor unit High temperature high pressure gas High temperature high pressure li...

Page 91: ...ion Thermostat OFF Indoor unit Filter Filter Heat exchanger Fan OFF Fan OFF Fan OFF Indoor unit Filter Filter Heat exchanger Thermostat ON Indoor unit High temperature high pressure gas High temperatu...

Page 92: ...F Indoor unit Filter Filter Heat exchanger Fan OFF Indoor unit Filter Filter Heat exchanger Fan ON Thermostat ON Indoor unit High temperature high pressure gas High temperature high pressure liquid Lo...

Page 93: ...er Filter Heat exchanger Fan OFF Indoor unit Filter Filter Heat exchanger Fan ON Fan ON Thermostat ON Indoor unit High temperature high pressure gas High temperature high pressure liquid Low temperatu...

Page 94: ...F Indoor unit Filter Filter Heat exchanger Indoor unit Filter Filter Heat exchanger Fan ON Fan OFF Fan ON Thermostat ON Indoor unit High temperature high pressure gas High temperature high pressure li...

Page 95: ...ion Thermostat OFF Indoor unit Filter Filter Heat exchanger Fan OFF Fan OFF Fan OFF Indoor unit Filter Filter Heat exchanger Thermostat ON Indoor unit High temperature high pressure gas High temperatu...

Page 96: ...F Indoor unit Filter Filter Heat exchanger Fan OFF Indoor unit Filter Filter Heat exchanger Fan ON Thermostat ON Indoor unit High temperature high pressure gas High temperature high pressure liquid Lo...

Page 97: ...eration Indoor unit Filter Filter Heat exchanger Fan OFF Indoor unit Filter Filter Heat exchanger Fan ON Fan ON Thermostat ON Indoor unit High temperature high pressure gas High temperature high press...

Page 98: ...at OFF Indoor unit Filter Filter Heat exchanger Indoor unit Filter Filter Heat exchanger Fan ON Fan OFF Fan ON Thermostat ON Indoor unit High temperature high pressure gas High temperature high pressu...

Page 99: ...peration Thermostat OFF Indoor unit Filter Filter Heat exchanger Fan OFF Fan OFF Fan OFF Indoor unit Filter Filter Heat exchanger Thermostat ON Indoor unit High temperature high pressure gas High temp...

Page 100: ...nit operation Thermostat OFF Indoor unit Filter Filter Heat exchanger Fan OFF Indoor unit Filter Filter Heat exchanger Indoor unit High temperature high pressure gas High temperature high pressure liq...

Page 101: ...Refrigerant Flow for Each Operation Mode Si34 601A 90 Refirgerant Circuit...

Page 102: ...119 4 3 Discharge Pipe Protection Control 120 4 4 Inverter Protection Control 121 4 5 STD Compressor Overload Protection 122 4 6 Injection Control only for RXYQ5P 122 5 Other Control 123 5 1 Outdoor U...

Page 103: ...high pressure sensor Pe S1NPL Value detected by low pressure sensor SH Evaporator outlet superheat SHS Target evaporator outlet superheat SVO Y2S Solenoid valve for oil return SVP Y1S Solenoid valve...

Page 104: ...N conditions are met Outdoor unit rotation Defrosting operation Operation mode changeover Operation mode changeover after completion of oil return or defrost control Heating Operation in stop mode Ind...

Page 105: ...w pressure protection Td protection INV protection Outdoor unit fan M1F Cooling fan control Step 7 or 8 Four way valve 20S1 Y1R OFF ON Main motorized valve EV1 Y1E 480 pls PI control Subcool heat exch...

Page 106: ...alue Varies depending 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...

Page 107: ...5P INV No 1 RXYQ8P Pattern 1 Pattern 2 Pattern 3 RXYQ10P 12P INV STD1 No 1 No 2 RXYQ14P 16P 18P INV STD1 STD1 No 2 No 4 No 1 No 3 RXYQ28P 30P INV STD1 No 1 No 3 INV STD1 STD2 No 2 No 4 No 5 No 2 No 4...

Page 108: ...TD1 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 RXYQ46P 48P INV STD1 No 1 No...

Page 109: ...28 104 Hz ON OFF 29 116 Hz ON OFF 30 124 Hz ON OFF 31 132 Hz ON OFF 32 144 Hz ON OFF 33 158 Hz ON OFF 34 176 Hz ON OFF 35 188 Hz ON OFF 36 202 Hz ON OFF 37 210 Hz ON OFF 38 52 Hz ON ON 39 62 Hz ON ON...

Page 110: ...Hz ON 33 116 Hz 116 Hz ON 34 124 Hz 124 Hz ON 35 132 Hz 132 Hz ON 36 144 Hz 144 Hz ON 37 158 Hz 158 Hz ON 38 176 Hz 176 Hz ON 39 188 Hz 188 Hz ON 40 202 Hz 202 Hz ON 41 210 Hz 210 Hz ON 42 218 Hz 210...

Page 111: ...Hz 74 Hz ON 2 36 88 Hz 88 Hz ON 2 37 96 Hz 96 Hz ON 2 38 104 Hz 104 Hz ON 2 39 124 Hz 124 Hz ON 2 40 144 Hz 144 Hz ON 2 41 158 Hz 158 Hz ON 2 42 166 Hz 166 Hz ON 2 43 176 Hz 176 Hz ON 2 44 188 Hz 188...

Page 112: ...41 92 Hz 92 Hz ON 3 42 104 Hz 104 Hz ON 3 43 116 Hz 116 Hz ON 3 44 124 Hz 124 Hz ON 3 45 144 Hz 144 Hz ON 3 46 158 Hz 158 Hz ON 3 47 166 Hz 166 Hz ON 3 48 176 Hz 176 Hz ON 3 49 188 Hz 188 Hz ON 3 50 2...

Page 113: ...Hz 74 Hz ON 4 46 96 Hz 96 Hz ON 4 47 104 Hz 104 Hz ON 4 48 116 Hz 116 Hz ON 4 49 124 Hz 124 Hz ON 4 50 144 Hz 144 Hz ON 4 51 158 Hz 158 Hz ON 4 52 166 Hz 166 Hz ON 4 53 176 Hz 176 Hz ON 4 54 188 Hz 18...

Page 114: ...Hz 210 Hz 248 Hz ON 3 41 266 Hz 210 Hz 266 Hz ON 3 To decrease Step No STEP No Master unit INV Slave unit1 INV Slave unit2 INV STD 1 52 Hz OFF OFF OFF 2 56 Hz OFF OFF OFF 3 62 Hz OFF OFF OFF 4 68 Hz...

Page 115: ...6 Hz 176 Hz ON 4 55 188 Hz 188 Hz 188 Hz ON 4 56 202 Hz 202 Hz 202 Hz ON 4 57 210 Hz 210 Hz 210 Hz ON 4 58 218 Hz 218 Hz 218 Hz ON 4 59 232 Hz 232 Hz 232 Hz ON 4 60 248 Hz 248 Hz 248 Hz ON 4 61 266 Hz...

Page 116: ...nditions of compressors the compressors may run in patterns other than those aforementioned To decrease Step No STEP No Master unit INV Slave unit1 INV Slave unit2 INV STD 1 52 Hz OFF OFF OFF 2 56 Hz...

Page 117: ...will be transferred according to the priority of rotation system 3 Depending on the operating conditions of compressors the compressors may run in patterns other than those aforementioned To decrease...

Page 118: ...are all those controlled while in standard mode which vary when the system is set to high static pressure or capacity precedence mode SH Ts1 Te SH Evaporator outlet superheated degree C Ts1 Suction pi...

Page 119: ...iate liquid pressure thus ensuring refrigerant circulation rate to be supplied to indoor units Upper limit of fan revolutions Step 8 Upper limit of outdoor unit fan revolutions Step 7 1 step on outdoo...

Page 120: ...door unit fan STEP4 Ta 20 C OFF Ta 20 C STEP4 1 step 15 sec when Pc 2 16MPa 1 step 15 sec when Pc 1 77MPa Four way valve 20S1 Holds OFF OFF Main motorized valve EV1 0 pls 480 pls 480 pls Subcooling mo...

Page 121: ...tion or setup after defrosting start up multiple compressors at a high speed according to the conditions of indoor units with thermostat ON thus maximizing the equipment capacity Start up STD compress...

Page 122: ...rn operation Non operating unit stops during oil return preparation operation Actuators are based on RXYQ14 18P Outdoor unit actuator Oil return preparation operation Oil return operation Post oil ret...

Page 123: ...turn operation Compressor Upper limit control 176 Hz ON ON 124 Hz OFF OFF 2 steps increase 20sec till Pc Pe 0 4 MPa Outdoor unit fan STEP7 or STEP8 OFF STEP8 Four way valve ON OFF ON Main motorized va...

Page 124: ...ions listed in the table above from the Defrost operation Non operating unit stops during Defrost preparation operation Actuators are based on RXYQ14 18P Outdoor unit actuator Defrost preparation oper...

Page 125: ...based on RXYQ14 18P Actuator Master unit operation Slave unit operation Compressor 124 Hz OFF OFF OFF Outdoor unit fan Fan control OFF Four way valve OFF OFF Main motorized valve EV1 480 pls 0 pls Su...

Page 126: ...er to prevent the refrigerant from melting in the compressor oil in the stopped mode this mode is used to control the crankcase heater Actuator Operation Compressor OFF Outdoor unit fan Ta 30 C STEP4...

Page 127: ...etry times Actuator Operation Compressor OFF Outdoor unit fan OFF Four way valve Holds Main motorized valve EV1 0 pls Subcooling motorized valve EV2 0 pls Hot gas bypass valve SVP OFF Accumulator oil...

Page 128: ...using a slave unit in the stopped mode In cooling operation Same as that of normal operation stop In heating operation The system operates with following mode Actuator Operation Compressor OFF Outdoo...

Page 129: ...r 10 sec After 10 sec After 15 sec Pc 3 55MPa STD compressor standby Pc HP pressure sensor detection value for each outdoor unit When occurring 3 times within 30 min HPS is activated without high pres...

Page 130: ...52 Hz OFF OFF Slave unit Stop Pe 0 25MPa Pe 0 15MPa Pe 0 30MPa Pe 0 39MPa Pe 0 07MPa Pe LP pressure sensor detection value for master unit When occurring 4 times within 30 min the malfunction code E4...

Page 131: ...it frequency 1 step down from current compressor rps INV upper limit frequency 1 step up from current compressor frequency RXYQ5PY1 52 Hz Other models INV62 Hz OFF OFF HTdi 115 C Tp 135 C or HTdi 135...

Page 132: ...NV upper limit frequency max INV upper limit frequency 1 step down from current compressor frequency INV upper limit frequency 1 step up from current compressor frequency Inverter current 14 7A Invert...

Page 133: ...erant flow into the suction side to reduce the discharge pipe temperature for the compressor protection STD compressor ON CT detection current value 15 0A STD compressor OFF for 30 min Demand to opera...

Page 134: ...ter defrosting operation At the beginning of the starting control When any of outdoor unit stops for a period of 20 minutes or more in heating There are outdoor units that stop operation in cooling Lo...

Page 135: ...s of indoor units having a capacity of 50 or more of the outdoor unit capacity turn ON the emergency operation is functional If the total capacity of indoor units with thermostat ON is small the outdo...

Page 136: ...or RXYQ14P 16P and 18P if the INV compressor is set to operation prohibition mode only a single STD compressor will operate for the convenience of oil equalization For RXYQ14P 16P and 18P only the STD...

Page 137: ...Other Control Si34 601A 126 Function Note In order to forcedly clear the automatic backup operation reset the power supply with the outdoor unit in the stopped state...

Page 138: ...order to set the slave unit 2 to operation prohibition mode set No 40 of Setting mode 2 to SLAVE 2 OPERATION PROHIBITION Procedure 1 Press and hold the MODE button BS1 for a period of 5 seconds or mo...

Page 139: ...tinuous Demand Setting or external input by external control adapter is required 5 4 Heating Operation Prohibition Heating operation is prohibited above 24 C ambient temperature Set item Condition Con...

Page 140: ...utton 1 4 given in the figure below 6 1 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...

Page 141: ...eset even after the 5 minutes operation 5 seconds stop 5 minutes operation cycle ends operation continues until the switch is reset 6 1 4 When the Float Switch is Tripped and AF is Displayed on the Re...

Page 142: ...w 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 preven...

Page 143: ...t 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 othe...

Page 144: ...n 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...

Page 145: ...mation on page onward 6 5 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 As...

Page 146: ...er the completion of defrosting in heating operation the indoor unit fan is controlled to prevent cold air from blasting out and ensure startup capacity Detail of operation When either the start condi...

Page 147: ...r 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 Ex Case where temperature is 5 C or less for total of 10 m...

Page 148: ...zontal Horizontal Horizontal Wind direction set OFF Horizontal Horizontal Horizontal Defrosting operation Swing OFF Horizontal Horizontal Horizontal Wind direction set OFF Horizontal Horizontal Horizo...

Page 149: ...fan operation mode according to the suction air outdoor air temperature Details Outdoor air processing unit 5 5 15 19 18 16 16 18 43 Suction temperature T1 C Cooling mode Fan operation with thermosta...

Page 150: ...emperature detected by discharge air thermistor Th4 EV Electronic expansion valve opening Discharge air Refrigerant Refrigerant CPU T1 T3 T2 T4 EV Ts Temp Setting T4 Ts Is EV possible to open Is EV po...

Page 151: ...pening Discharge air Refrigerant Refrigerant CPU From Outdoor unit T2 T1 T4 EV Tc Ts Temp Setting T4 Ts Is EV possible to open Is EV possible to close Calculate superheat degree If the discharge tempe...

Page 152: ...stops running Heating Turn OFF the fan for a period of 60 minutes at a suction temperature of 5 C or lower In order to monitor the outdoor air temperature however turn ON the fan for a period of one m...

Page 153: ...Outline of Control Indoor Unit Si34 601A 142 Function...

Page 154: ...t Operation 144 1 1 Installation Process 144 1 2 Procedure and Outline 145 1 3 Operation When Power is Turned On 159 2 Outdoor Unit PC Board Layout 160 3 Field Setting 161 3 1 Field Setting from Remot...

Page 155: ...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...

Page 156: ...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 sto...

Page 157: ...w will be automatically initiated Check for erroneous wirings Check for failure to open stop valves Check for excessive refrigerant refilling Automatic judgment of piping length Before starting the no...

Page 158: ...149 The refrigerant charge port is connected to unit pipe When shipped the unit contains refrigerant so use caution when attaching the charge hose Gauge manifold Charge hose valve To prevent entry of...

Page 159: ...2 If the pressure does not reach 100 7 kPa even after depressurizing for at least two hours repeat the vacuum breakdown vacuum drying process After vacuum drying maintain the vacuum for an hour and m...

Page 160: ...the cap securely For the tightening torque refer to the item Tightening Torque To close 1 Remove the cap and turn the shaft clockwise with the hexagon wrench JISB4648 2 Securely tighten the valve unt...

Page 161: ...E button BS1 once and set the MONITOR MODE H1P Blinking 5 3 3 3 3 3 3 2 Press the SET button BS2 the number of times until the LED display matches that at right For checking the number of outdoor unit...

Page 162: ...iping 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 refrigeran...

Page 163: ...or operating the push button and opening and closing the valve follow the work procedure Note The refrigerant will be charged about 22kg in one hour at outdoor temp 30 C DB 6kg at 0 C DB If you need t...

Page 164: ...firming the number of the outdoor and indoor units with the power on see How to check how many units are connected in chapter 1 2 4 1 In case of a multi system turn on the power to all outdoor units i...

Page 165: ...ng the push button BS1 BS5 on the outdoor unit PC board A1P with the power on See 1 2 5 2 Onsite Settings With the Power On STEP5 Perform the check operation following the Check Operation Method of th...

Page 166: ...connected to the outdoor unit and revise if necessary UF There is conflict on the connection of transmission wiring in the system Check if the refrigerant piping line and the transmission wiring are c...

Page 167: ...MPO BOX lid Warning Electric Shock Warning Never perform with the power on There is a serious risk of electric shock if any live part is touched 1 2 5 2 Onsite Settings with the Power On Use the push...

Page 168: ...from the indoor unit 4 Push the fan direction and strength buttons on the remote controller to see if they operate properly NOTE Heating is not possible if the outdoor temperature is 24 C or higher Re...

Page 169: ...ION label And attach the label on the back side of the front panel Record the installation date Record the installation date on the accessory REQUEST FOR THE INDICATION label in accordance with the IE...

Page 170: ...door outdoor address etc Status Outdoor unit Test lamp H2P Blinks Can also be set during operation described above Indoor unit If ON button is pushed during operation described above the UH malfunctio...

Page 171: ...Multi outdoor 2 Set mode display LED 3 Mode setting switch 1 Microcomputer normal monitor 4 Local setting switch Connection terminal for transmission use DS1 DS2 HAP V3054 1 Microcomputer normal moni...

Page 172: ...r 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 select...

Page 173: ...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...

Page 174: ...h 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...

Page 175: ...lter sign is not to be displayed Display No display 12 22 0 Optional accessories output selection field selection of output for adaptor for wiring Indoor unit turned ON by thermostat Operationoutput M...

Page 176: ...ng type New Ceiling suspende dcassette type Outdoor air processing unit Multi flow Double flow Corner type FXFQ FXZQ FXCQ FXKQ FXDQ FXSQ FXMQ FXHQ FXAQ FXLQ FXNQ FXUQ FXMQ MF Filter sign Ultra long li...

Page 177: ...mostat is OFF Since there is concern about draft if using fan speed up when thermostat is OFF you should take the setup location into consideration Setting Table Filter Specs Setting Standard Long Lif...

Page 178: ...quently 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...

Page 179: ...ing at discharge grille for field air flow rate switching When the optional parts high performance filter etc is installed sets to change fan speed for securing air flow rate Follow the instruction ma...

Page 180: ...on No 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 10 20 0 Stain of filter 2500hr 1250hr 3 Filtering time cumulation Display No display 12 22 1 External ON OFF input Forced stop ON OFF control 5 Power...

Page 181: ...stem to Field Setting Mode 2 Select the MODE No 00 with the button 3 Use the button to select the group No for each group Group numbers increase in the order of 1 00 1 01 1 15 2 00 4 15 4 Press to set...

Page 182: ...to the normal mode Group No Setting Example Caution When turning the power supply on the unit may often not accept any operation while 88 is displaying after all indications were displayed once for a...

Page 183: ...ation mode setting by remote controller can be 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 cont...

Page 184: ...l 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...

Page 185: ...setting to ON with No 29 B The low noise operation aforementioned is enabled in nighttime automatic low noise operation mode Start time Possible to select in the range of 20 00 to 24 00 hours End time...

Page 186: ...concerned or outdoor unit s concerned and to conduct emergency operation of the system only with operable compressor s or outdoor unit s Make this setting while in Setting mode 2 For system with a si...

Page 187: ...e UA are displayed and unit can not be operated DS No Item Contents DS1 1 Cool Heat change over setting ON COOL HEAT setting is made with the use of a Cool Heat selector mounted to the outdoor unit OF...

Page 188: ...5HP RXYQ5PY1 Set DS2 1 to ON HEAT PUMP 8HP RXYQ8PY1 Set DS2 1 and DS2 3 to ON HEAT PUMP 10HP RXYQ10PY1 Set DS2 1 DS2 2 and DS2 3 to ON HEAT PUMP 12HP RXYQ12PY1 Set DS2 1 and DS2 4 to ON HEAT PUMP 14H...

Page 189: ...2P 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...

Page 190: ...MODE BS1 button to set the system to Setting mode 1 Normally Setting mode 1 is set In case of other status push MODE BS1 button one time and set to Setting mode 1 Check the system for each condition t...

Page 191: ...covery or vacuuming mode 22 Night time low noise setting Sets automatic nighttime low noise operation in a simple way The operating time is based on Starting set and Ending set 24 ENECUT test operatio...

Page 192: ...nvironment is extremely impaired prompt replacement of the part is required 39 Emergency operation Setting for the slave unit 1 operation prohibition in multi outdoor unit system 40 Emergency operatio...

Page 193: ...etting 8 7 7 8 7 8 7 Quick defrost 8777877 Normal factory setting 8777787 Slow defrost 8777778 11 Sequential operation setting 8 7 7 8 7 8 8 OFF 8777778 ON 8777787 12 External low noise demand setting...

Page 194: ...7 OFF 8777778 ON 8777787 29 Capacity precedence setting 8 7 8 8 8 7 8 OFF 8777778 ON 8777787 30 Demand setting 1 8 7 8 8 8 8 7 60 demand 8777778 70 demand 8777787 80 demand 8777877 32 Normal demand s...

Page 195: ...of terminal blocks 9 7 7 8 8 7 8 Lower 4 digits lower 14 Contents of malfunction the latest 9 7 7 8 8 8 7 Malfunction code table Refer page 216 15 Contents of malfunction 1 cycle before 9 7 7 8 8 8 8...

Page 196: ...r 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...

Page 197: ...controllers After the check operation CHANGEOVER UNDER CONTROL is flashing in all connected remote controllers Select an indoor unit to be used as the master unit in accordance with the request from...

Page 198: ...Separately for Each Outdoor Unit System by Cool Heat Selector It does not matter whether or not there is outdoor outdoor unit wiring Set outdoor unit PC board DS1 1 to OUT factory set Set cool heat s...

Page 199: ...for outdoor unit on either the outdoor outdoor indoor outdoor transmission line Set outdoor unit PC board DS1 1 to IN factory set In setting mode 1 set the outdoor unit you want to give cool heat sel...

Page 200: ...oor outdoor transmission line Mount the COOL HEAT selector to the master outdoor unit for the unified control Set the DS1 1 on the PC board of master outdoor unit to OUT In setting mode 1 set the outd...

Page 201: ...tches the unified cool heat address of outdoor unit main PC board Address setting for e and f Set lower 5 digits with binary number No 0 to No 31 Address No Outdoor unit PC board LED Set with setting...

Page 202: ...he low noise operation is carried out automatically at night The external control adapter for outdoor unit is not required 1 While in Setting mode 2 select the setting condition i e Mode 1 Mode 2 or M...

Page 203: ...Field Setting Si34 601A 192 Test Operation Image of operation in the case of A Image of operation in the case of B Image of operation in the case of A and B...

Page 204: ...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 B When the normal demand operation is carried out Use of the external co...

Page 205: ...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 consu...

Page 206: ...H1P on c In setting 1 push and hold the BS1 MODE button for more than 5 seconds Setting mode 2 is entered and H1P lights d Push the BS2 SET button several times and match the LED display with the Sett...

Page 207: ...z z z 9 Mode 2 Factory setting z z z z 9 z Mode 3 z z z 9 z z 26 Night time low noise start setting z z z PM 8 00 z z z z z 9 PM 10 00 Factory setting z z z z 9 z PM 0 00 z z z 9 z z 27 Night time lo...

Page 208: ...ing mode to ON The respective expansion valve of indoor and outdoor units are fully opened H2P turns to display TEST OPERATION blinks TEST OPERATION and UNDER CENTRALIZED CONTROL are displayed on the...

Page 209: ...2 until completion of Vacuuming operation d Use the vacuum pump to perform vacuuming operation e Press Mode button BS1 once and reset Setting Mode 2 3 2 6 Check Operation Detail Unit stopping Press th...

Page 210: ...3 10 C5 Indoor Unit Malfunction of Thermistor R3T for Gas Pipes 232 3 11 C9 Indoor Unit Malfunction of Thermistor R1T for Suction Air 233 3 12 CJ Indoor Unit Malfunction of Thermostat Sensor in Remot...

Page 211: ...80 3 44 U4 Malfunction of Transmission Between Indoor Units 281 3 45 U5 Indoor Unit Malfunction of Transmission Between Remote Controller and Indoor Unit 283 3 46 U7 Indoor Unit Malfunction of Transmi...

Page 212: ...ystem 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 immed...

Page 213: ...tion 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 operatio...

Page 214: ...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 outdoo...

Page 215: ...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 o...

Page 216: ...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 se...

Page 217: ...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 confirme...

Page 218: ...Si34 601A Troubleshooting by Remote Controller Troubleshooting 207 The lower digit of the code changes as shown below when the UP and DOWN buttons are pressed...

Page 219: ...Troubleshooting by Remote Controller Si34 601A 208 Troubleshooting...

Page 220: ...EYP RSXYP L RXYQ M RXYQ MA RXYQ 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 Pu...

Page 221: ...r 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 b...

Page 222: ...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 directi...

Page 223: ...ion 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 diag...

Page 224: ...re sensor 238 E5 9 9 9 Compressor motor lock 240 E6 9 9 9 Standard compressor lock or over current 242 E7 9 9 9 Malfunction of outdoor unit fan motor 243 E9 9 9 9 Malfunction of moving part of electro...

Page 225: ...ndoor unit and outdoor unit in the same system 287 UA 9 9 9 Improper combination of indoor and outdoor units indoor units and remote controller 288 UC 8 8 8 Address duplication of central remote contr...

Page 226: ...Si34 601A Troubleshooting by Remote Controller Troubleshooting 215...

Page 227: ...on signal of DC fan 1 motor H7 Abnormal position signal of DC fan 2 motor Faulty sensor of outdoor air temperature Faulty Ta sensor short H9 Faulty Ta sensor open Abnormal discharge pipe temperature A...

Page 228: ...7 7 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 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 9 7 7 7 9 9 7 7 9 7 7 7 9 9 7 9 9 7 7 7 9 9 9 7 J5 9 7 9 7 9 9 7 7...

Page 229: ...er PJ Incorrect combination of fan driver 1 Incorrect combination of fan driver 2 Gas shortage Gas shortage alarm U0 Reverse phase Reverse phase error U1 Abnormal power supply voltage Insufficient Inv...

Page 230: ...9 7 9 U3 9 7 7 9 9 9 7 7 7 7 9 7 7 9 9 9 7 7 7 7 9 7 9 9 9 U4 9 7 9 7 7 9 7 7 7 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 9 9 9 U7 9 7 7 7 7 9 7 7 9 9 9 7 7 7 7 9 9 7 9 9 9 7 7 7 7 9...

Page 231: ...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 B...

Page 232: ...ived 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 supp...

Page 233: ...ption 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 f...

Page 234: ...door 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...

Page 235: ...output voltage to the fan is maximum Supposed Causes Fan motor lock Disconnected or faulty wiring between fan motor and PC board Troubleshooting Caution Be sure to turn off power switch before connec...

Page 236: ...ction Utilizes ON OFF of the limit switch when the motor turns Malfunction Decision Conditions When ON OFF of the microswitch for positioning cannot be reversed even though the swing flap motor is ene...

Page 237: ...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 ai...

Page 238: ...g part of electronic expansion valve Defect of indoor unit PC board Defect of connecting cable Troubleshooting V2781 Caution Be sure to turn off power switch before connect or disconnect connector or...

Page 239: ...ctronic expansion valve Disconnect the electronic expansion valve from the PC board and check the continuity between the connector pins Normal Continuity No continuity Pin No 1 White 2 Yellow 3 Orange...

Page 240: ...ons When the float switch changes from ON to OFF while the compressor is in non operation Supposed Causes Humidifier unit optional accessory leaking Defect of drain pipe upward slope etc Defect of ind...

Page 241: ...Malfunction Decision Conditions Operation and When the capacity code is not contained in the PC board s memory and the capacity setting adaptor is not connected Supposed Causes You have forgotten to...

Page 242: ...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 P365 Caution Be sure t...

Page 243: ...ed Causes Defect of indoor unit thermistor R3T for gas pipe Defect of indoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P365 Caution Be sure to t...

Page 244: ...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 P365 Caut...

Page 245: ...is running Supposed Causes Defect of remote controller thermistor Defect of remote controller PC board Troubleshooting Note In case of remote controller thermistor malfunction unit is still operable...

Page 246: ...orrectly received 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 outdoor unit PC board A1P Troubleshooti...

Page 247: ...ntact 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 Operatin...

Page 248: ...ormal See 2 Replace the main PCB The high pressure sensor is normal and the pressure detected with the PCB is also normal The high pressure has really become high CHECK 3 Referring to information on p...

Page 249: ...P Method of Malfunction Detection Abnormality is detected by the pressure value with the low pressure sensor Malfunction Decision Conditions Error is generated when the low pressure is dropped under s...

Page 250: ...become low Referring to information on page 313 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...

Page 251: ...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 m...

Page 252: ...xed up with those for non inverter compressor Disconnect the cable from the compressor and then check the compressor for the insulation resistance YES Check the compressor motor coil for any broken wi...

Page 253: ...6P A7P Troubleshooting Note 1 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...

Page 254: ...when the fan motor runs Malfunction Decision Conditions When the fan runs with speed less than a specified one for 6 seconds or more when the fan motor running conditions are met When connector detec...

Page 255: ...ubular fuse on the fan inverter PCB has a broken wire has no continuity YES NO Resitance between the fan motor power supply cable terminal and the motor frame metal part is not more than 1M With the c...

Page 256: ...n motor has got imbalanced or short circuits have been established amoung the U V and W phases YES Turn ON the power supply NO Has a short circuit been established between the fan motor signal cables...

Page 257: ...ller Display E9 Applicable Models RXYQ5P 54PY1 Method of Malfunction Detection Check disconnection of connector Check continuity of expansion valve coil Malfunction Decision Conditions Error is genera...

Page 258: ...age may be occurred Return to normal Turn power supply off and turn power supply on again Electronic expansion valve is connected to X21A and X23A of outdoor unit PC board A1P Normal when coil check 1...

Page 259: ...sensor Faulty connection of discharge pipe temperature sensor Faulty outdoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P366 V3068 Caution Be su...

Page 260: ...ignment of the outside air thermistor Misalignment of the heat exchanging deicer thermistor Misalignment of the liquid pipe thermistor Troubleshooting Refer to Thermistor Resistance Temperature Charac...

Page 261: ...fan motor connection cable Fan Inverter PC board malfunction Troubleshooting 1 Disconnect connector X2A and measure the following resistance V3069 Turn power off Check of fan motor connector 1 Caution...

Page 262: ...circuit or open circuit Supposed Causes Defect of thermistor R1T for outdoor air Defect of outdoor unit PC board A1P Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on...

Page 263: ...ses Faulty current sensor A6P A7P Faulty outdoor unit PC board Troubleshooting V3071 Caution Be sure to turn off power switch before connect or disconnect connector or parts damage may be occurred Is...

Page 264: ...fect of thermistor connection Troubleshooting The alarm indicator is displayed when the fan is being used also Note 5 HP class R3T 8 12 HP class R31T R32T 14 16Hp class R31T R32T and R33T Refer to The...

Page 265: ...is detected Supposed Causes Defect of thermistor R2T R7T for outdoor unit suction pipe Defect of outdoor unit PC board A1P Defect of thermistor connection Troubleshooting Refer to Thermistor Resistanc...

Page 266: ...tor is detected Supposed Causes Defect of thermistor R4T for outdoor unit coil Defect of outdoor unit PC board A1P Defect of thermistor connection Troubleshooting Refer to Thermistor Resistance Temper...

Page 267: ...Causes Faulty liquid pipe thermistor R6T Faulty outdoor unit PC board Defect of thermistor connection Troubleshooting Refer to Thermistor Resistance Temperature Characteristics table on P365 V3075 Ca...

Page 268: ...t circuited or open Supposed Causes Faulty subcooling heat exchanger gas pipe thermistor R5T Faulty outdoor unit PC board Troubleshooting Refer to Thermistor Resistance Temperature Characteristics tab...

Page 269: ...f low pressure sensor with wrong connection Defect of outdoor unit PC board Troubleshooting 1 Voltage measurement point 2 Refer to Pressure Sensor Pressure Voltage Characteristics table on P367 V2806...

Page 270: ...ressure sensor with wrong connection Defect of outdoor unit PC board Troubleshooting 1 Voltage measurement point 2 Refer to Pressure Sensor Pressure Voltage Characteristics table on P367 V2808 Caution...

Page 271: ...tor connector X111A Faulty radiation from the switch box Conduct the checks shown below Radiation fin for stains Airflow for interference Fan propeller for damage Whether or not outdoor temperature is...

Page 272: ...Si34 601A Troubleshooting by Indication on the Remote Controller Troubleshooting 261 Inverter PCB for compressor Refer to Thermistor Resistance Temperature Characteristics table on P365...

Page 273: ...pposed Causes Defect of compressor coil disconnected defective insulation Compressor start up malfunction mechanical lock Defect of inverter PC board Troubleshooting Compressor inspection Caution Be s...

Page 274: ...or not the malfunction recurs Restart the compressor and then check whether or not the malfunction recurs Repalce the compressor A3P Replace the inverter PCB Normal On site causes such as instantaneo...

Page 275: ...YES NO YES NO A current of not less than 15A flows through the compressor Are wire connections properly made according to the Wiring Diagram The insulation resistance is low i e not more than 100k Doe...

Page 276: ...e prior to startup 0 2MPa Does the malfunction L8 recur It can take a maximum of 60 minutes to determine the malfunction Faulty pressure equalization Check the refrigerant system End of measures Check...

Page 277: ...f power switch before connect or disconnect connector or parts damage may be occurred Power OFF NO NO NO NO YES YES YES NO YES NO Are wire connections properly made according to the Wiring Diagram The...

Page 278: ...e prior to startup 0 2MPa Does the malfunction L9 recur It can take a maximum of 60 minutes to determine the malfunction Faulty pressure equalization Check the refrigerant system End of measures Check...

Page 279: ...mmunication state 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 Mal...

Page 280: ...1M F400U of the A2P has been molten Replace the noise filter of the A2P Note X3A black X4A yellow Disconnect the cable from the compressor and then check the compressor for the insulation resistance D...

Page 281: ...A8P do not blink This is not LC Recheck for the malfunction code A3P Replace the inverter PCB If the PCB replaced is badly damaged the compressor is likely to get faulty To make sure recheck the comp...

Page 282: ...he 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 disconnecte...

Page 283: ...Supposed Causes Defect of radiator fin temperature sensor Defect of inverter PC board Troubleshooting Caution Be sure to turn off power switch before connect or disconnect connector or parts damage ma...

Page 284: ...Si34 601A Troubleshooting by Indication on the Remote Controller Troubleshooting 273 Inverter PCB for compressor Refer to Thermistor Resistance Temperature Characteristics table on P365...

Page 285: ...e field setting or the type of the PC board is correct through the communication date is judged Supposed Causes Faulty or no field setting after replacing main PC board Mismatching of type of PC board...

Page 286: ...ture Characteristics table on P365 2 Refer to Pressure Sensor Pressure Voltage Characteristics table on P367 V2819 The suction pipe temperature minus coil temperature is 20 C or higher Resistance is n...

Page 287: ...between phases Supposed Causes Power supply reverse phase Power supply open phase Defect of outdoor PC board A1P Troubleshooting V2820 Operation is normal if one place of power supply line phase is r...

Page 288: ...apacitor 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...

Page 289: ...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...

Page 290: ...y replace the A3P inverter PC board If the PC board replaced is badly damaged compressor is likely to get faulty To make sure recheck the compressor Check the harness and then replace it if necessary...

Page 291: ...k 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 refriger...

Page 292: ...Detection Microcomputer checks if transmission between indoor and outdoor units is normal Malfunction Decision Conditions When transmission is not carried out normally for a certain amount of time Su...

Page 293: ...e indoor unit PC Board indicated by the malfunction code U4 Push and hold the RESET button on the master outdoor unit PC Board for 5 seconds Fix the indoor outdoor or outdoor outdoor unit transmission...

Page 294: ...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 disconn...

Page 295: ...r units Malfunction Decision Conditions When transmission is not carried out normally for a certain amount of time Supposed Causes Improper connection of transmission wiring between outdoor unit and e...

Page 296: ...tor is set to IND YES Set C H SELECT to IND Fix the outdoor units multi connection transmission wiring and reset power NO Is there any broken wire or erroneous wire connection in the communication wir...

Page 297: ...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 Trouble...

Page 298: ...tion of transmission 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...

Page 299: ...ence occurs in data by the type of refrigerant between indoor and outdoor units The number of indoor units is out of the allowable range Malfunction Decision Conditions The malfunction decision is mad...

Page 300: ...set as per page 176 177 Correct the combination of indoor units with UA displayed Normal It is assumed that the code is displayed due to temporary external cause e g noises NO YES Replace the outdoor...

Page 301: ...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 Ca...

Page 302: ...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...

Page 303: ...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 U...

Page 304: ...P 304 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 un...

Page 305: ...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...

Page 306: ...ls of indoor units RXYQ5P 54P 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...

Page 307: ...ed Is indoor outdoor and outdoor outdoor unit transmission wiring normal YES NO Normal NO Does a malfunction occur Mount the DIII NET extension adapter YES Disconnect the outdoor outdoor unit transmis...

Page 308: ...detected at the same time Supposed Causes Defect of central remote controller PC board Defect of Schedule timer PC board Troubleshooting Replace the central remote controller Caution Be sure to turn o...

Page 309: ...od of Malfunction Detection Detect the malfunction according to DIII NET transmission data The system will be automatically reset Malfunction Decision Conditions When no master controller is present a...

Page 310: ...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 equipment been turned ON Is the display of...

Page 311: ...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...

Page 312: ...t to which the master unit central connector is connected and then reset power supplies of every central equipment Disconnect the master unit central setting connector and connect this connector to di...

Page 313: ...power supplies of 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 ex...

Page 314: ...ent 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...

Page 315: ...e said place 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...

Page 316: ...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 tr...

Page 317: ...er 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...

Page 318: ...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 o...

Page 319: ...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 s...

Page 320: ...roller 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 con...

Page 321: ...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 disconne...

Page 322: ...1 Turn off the power supply 2 Measure the resistance between Vcc and each phase of U V W and GND and each phase at the motor side connectors five core wire to check that the values are balanced within...

Page 323: ...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...

Page 324: ...rator 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...

Page 325: ...Troubleshooting OP Unified ON OFF Controller Si34 601A 314 Troubleshooting...

Page 326: ...Parts 348 3 1 Outdoor Unit 348 3 2 Indoor Side 351 4 Option List 357 4 1 Option List of Controllers 357 4 2 Option Lists Outdoor Unit 359 5 Piping Installation Point 361 5 1 Piping Installation Point...

Page 327: ...Piping Diagrams Si34 601A 316 Appendix 1 Piping Diagrams 1 1 Outdoor Unit RXYQ5PY1 3D050782...

Page 328: ...Si34 601A Piping Diagrams Appendix 317 RXYQ8P 3D050783...

Page 329: ...Piping Diagrams Si34 601A 318 Appendix RXYQ10P 12PY1 3D050784...

Page 330: ...Si34 601A Piping Diagrams Appendix 319 RXYQ14P 16P 18PY1 3D050785...

Page 331: ...ronic 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 th...

Page 332: ...Si34 601A Piping Diagrams Appendix 321 FXZQ Refrigerant pipe connection port diameters mm Model Gas Liquid FXZQ20M 25M 32M 40M 50M 12 7 6 4...

Page 333: ...diameters FXMQ125MF 200MF 250MFV1 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 12 7 6 4 FXDQ63N A VE T 15 9 9 5 4D018650B mm Mo...

Page 334: ...Si34 601A Piping Diagrams Appendix 323 FXUQ BEVQ Indoor unit Connection Unit 4D037995F 4D034127B...

Page 335: ...Wiring Diagrams for Reference Si34 601A 324 Appendix 2 Wiring Diagrams for Reference 2 1 Outdoor Unit RXYQ5PY1 3D050453G...

Page 336: ...Si34 601A Wiring Diagrams for Reference Appendix 325 RXYQ8PY1 3D050454J...

Page 337: ...Wiring Diagrams for Reference Si34 601A 326 Appendix RXYQ10PY1 3D050455H...

Page 338: ...Si34 601A Wiring Diagrams for Reference Appendix 327 RXYQ12PY1 3D051890G...

Page 339: ...Wiring Diagrams for Reference Si34 601A 328 Appendix RXYQ14P 16P 18PY1 3D050456H...

Page 340: ...Si34 601A Wiring Diagrams for Reference Appendix 329 2 2 Field Wiring RXYQ5P 8P 10P 12P 14P 16P 18PY1 3D051452D...

Page 341: ...Wiring Diagrams for Reference Si34 601A 330 Appendix RXYQ20P 22P 24P 26P 28P 30P 32PY1 3D052261B...

Page 342: ...Si34 601A Wiring Diagrams for Reference Appendix 331 RXYQ34P 36P 38P 40P 42P 44P 46P 48P 50P 52P 54PY1 C 3D052262B...

Page 343: ...Wiring Diagrams for Reference Si34 601A 332 Appendix 2 3 Indoor Unit FXCQ20M 25M 32M 63MVE 3D039556A...

Page 344: ...Si34 601A Wiring Diagrams for Reference Appendix 333 FXCQ40M 50M 80M 125MVE 3D039557A...

Page 345: ...Wiring Diagrams for Reference Si34 601A 334 Appendix FXFQ25M 32M 40M 50M 63M 80M 100M 125MVE 3D039600A...

Page 346: ...Si34 601A Wiring Diagrams for Reference Appendix 335 FXZQ20M 25M 32M 40M 50M7V1B 3D038359...

Page 347: ...Wiring Diagrams for Reference Si34 601A 336 Appendix FXKQ25MA 32MA 40MA 63MAVE 3D039564C...

Page 348: ...Si34 601A Wiring Diagrams for Reference Appendix 337 FXDQ20P 25P 32P FXDQ20NA 25NA 32NA 40NA 50NA 63NAVE with Drain Pump 3D045500C...

Page 349: ...Wiring Diagrams for Reference Si34 601A 338 Appendix FXDQ20P 25P 32P FXDQ20N 25N 32N 40N 50N 63NVET without Drain Pump 3D049604A...

Page 350: ...Si34 601A Wiring Diagrams for Reference Appendix 339 FXSQ20M 25M 32M 40M 50M 63M 80M 100M 125MVE 3D039561A...

Page 351: ...Wiring Diagrams for Reference Si34 601A 340 Appendix FXMQ40MA 50MA 63MA 80MA 100MA 125MAVE 3D039620B...

Page 352: ...Si34 601A Wiring Diagrams for Reference Appendix 341 FXMQ200MA 250MAVE 3D039621B...

Page 353: ...Wiring Diagrams for Reference Si34 601A 342 Appendix FXHQ32MA 63MA 100MAVE 3D039801D...

Page 354: ...Si34 601A Wiring Diagrams for Reference Appendix 343 FXAQ20MA 25MA 32MAVE 40MA 50MA 63MAVE 3D034206C...

Page 355: ...Wiring Diagrams for Reference Si34 601A 344 Appendix FXLQ20MA 25MA 32MA 40MA 50MA 63MAVE FXNQ20MA 25MA 32MA 40MA 50MA 63MAVE 3D039826D...

Page 356: ...Si34 601A Wiring Diagrams for Reference Appendix 345 FXUQ71MA 100MA 125MAV1 3D044973A...

Page 357: ...Wiring Diagrams for Reference Si34 601A 346 Appendix FXMQ125MF 200MF 250MFV1 3D044996C...

Page 358: ...Si34 601A Wiring Diagrams for Reference Appendix 347 BEVQ71MA 100MA 125MAVE 3D044901B...

Page 359: ...lly closed 0pls Fully open 480pls Electronic expansion valve Subcool Y2E Fully closed 0pls Fully open 480pls Pressure protection Highpressure switch For M1C S1PH OFF 4 0 MPa ON 3 0 0 15MPa For M2C S2P...

Page 360: ...pen 480pls Electronic expansion valve Subcool Y2E 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...

Page 361: ...ansion valve Subcool Y2E 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...

Page 362: ...Exchanger R2T ST8602A 5 6 L1000 20k 25 C Others Float Switch S1L FS 0211B Fuse F1U 250V 5A 5 2 Thermal Fuse TFu Transformer T1R Parts Name Symbol Model Remark FXCQ 20MVE FXCQ 25MVE FXCQ 32MVE FXCQ 40...

Page 363: ...p R3T ST8605 7 8 L1600 20k 25 C Thermistor Heat Exchanger R2T ST8602A 7 6 L1600 20k 25 C Others Float Switch S1L FS 0211B Fuse F1U 250V 5A 5 2 Transformer T1R TR22H21R8 Parts Name Symbol Model Remark...

Page 364: ...20k 25 C Others Float Switch S1L FS 0211B Fuse F1U 250V 5A 5 2 Transformer T1R TR22H21R8 Parts Name Symbol Model Remark FXMQ 40MAVE FXMQ 50MAVE FXMQ 63MAVE FXMQ 80MAVE FXMQ 100MAVE FXMQ 125MAVE FXMQ...

Page 365: ...1250 20k 25 C Thermistor Heat Exchanger R2T ST8602A 6 6 L 1250 20k 25 C ST8602A 6 6 L 1250 20k 25 C Others Fuse F1U 250V 5A 5 2 Transformer T1R TR22H21R8 Parts Name Symbol Model Remark FXAQ 20MAVE FX...

Page 366: ...9 8 L2500 20k 25 C Thermistor for Heat Exchanger R2T ST8602A 9 6 L2500 20k 25 C Others Fuse F1U AC250V 5A Transformer T1R TR22H21R8 Parts Name Symbol Model Remark FXNQ 20MAVE FXNQ 25MAVE FXNQ 32MAVE F...

Page 367: ...25 C Others Float Switch S1L FS 0211B Parts Name Symbol Model Remark FXMQ125MFV1 FXMQ200MFV1 FXMQ250MFV1 Remote Controller Wired Remote Controller BRC1C62 Option Wireless Remote Controller Motors Fan...

Page 368: ...301B A 61 12 External control adaptor for outdoor unit Must be installed on indoor units DTA104A61 DTA104A6 2 DTA104A61 DTA104A53 DTA104A61 DTA104A62 DTA104A61 DTA104A61 13 Interface adaptor for SkyAi...

Page 369: ...er III 3 2 Interface for use in BACnet DMS502A51 Interface unit to allow communications between VRV and BMS Operation and monitoring of air conditioning systems through BACnet communications 3 1 Optio...

Page 370: ...A Distributive Piping Refnet header KHRP26M22H Max 4 branch KHRP26M33H Max 8 branch KHRP26M72H Max 8 branch KHRP26M22H KHRP26M33H KHRP26M72H KHRP26M73H Max 4 branch Max 8 branch Max 8 branch Max 8 bra...

Page 371: ...Max 8 branch Max 8 branch Refnet joint KHRP26A22T KHRP26A33T KHRP26A72T KHRP26A73T Outdoor unit multi connection piping kit BHFP22P151 Pipe size reducer KHRP26M73TP KHRP26M73HP Central drain pan kit...

Page 372: ...o 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...

Page 373: ...Unit Actual piping length 40m or less Refer to Page 363 364 Note 2 in case of up to 90m Allowable Level Difference Outdoor Unit Outdoor Unit 5m or less Outdoor Unit Indoor Unit 50m or less 90m or les...

Page 374: ...8 branch KHRP26M73HP How to select the Outdoor unit multi connection piping kit This is required when the system is multi outdoor unit system Choose from the following table in accordance with the nu...

Page 375: ...1 22 2 Not Increased Not Increased Not Increased 22 2 22 2 22 2 RXYQ42 Type RXYQ44 Type Not Increased Not Increased 22 2 22 2 RXYQ46 Type Not Increased 22 2 Model Gas Liquid Not Increased Not Increase...

Page 376: ...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...

Page 377: ...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...

Page 378: ...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 VL...

Page 379: ...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 termin...

Page 380: ...0 U N3 2 to 15k 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 te...

Page 381: ...Method of Checking The Inverter s Power Transistors and Diode Modules Si34 601A 370 Appendix...

Page 382: ...01A Precautions for New Refrigerant R 410A 371 Part 8 Precautions for New Refrigerant R 410A 1 Precautions for New Refrigerant R 410A 372 1 1 Outline 372 1 2 Refrigerant Cylinders 374 1 3 Service Tool...

Page 383: ...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 R...

Page 384: ...New Refrigerant R 410A 373 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...

Page 385: ...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 r...

Page 386: ...ion differs 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...

Page 387: ...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...

Page 388: ...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...

Page 389: ...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 pe...

Page 390: ...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 Char...

Page 391: ...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 m...

Page 392: ...7 Drain Level above Limit 229 Drain Pump Control 129 E E1 235 E3 236 E4 238 E5 240 E6 242 E7 243 E9 246 Electronic Expansion Valve PI Control 107 Emergency Operation 124 Error of External Protection D...

Page 393: ...d Controller and Indoor Unit 291 Malfunction of Transmission Between Indoor and Outdoor Units in the Same System 287 Malfunction of Transmission Between Indoor Units 281 Malfunction of Transmission Be...

Page 394: ...opping Operation 116 Symptom based Troubleshooting 201 System is not Set yet 294 T Test Operation 144 Procedure and Outline 145 The Example of A Wrong Pattern 362 Thermistor Resistance Temperature Cha...

Page 395: ...Si34 601A iv Index...

Page 396: ...acing Main PC Board or Faulty Combination of PC Board 274 Field Setting from Outdoor Unit 174 Mode changing procedure 178 Setting by dip switches 176 Freeze Prevention 136 Functional Parts Layout 69 I...

Page 397: ...ng Installation Point 361 The Example of A Wrong Pattern 362 Power Supply Insufficient or Instantaneous Failure 277 Pressure Sensor 367 R Refrigerant Flow for Each Operation Mode 74 Refrigerant Overch...

Page 398: ...e electrical shock fire or explosion Use only those parts and accessories supplied or specified by Daikin Ask a qualified installer or contractor to install those parts and accessories Use of unauthor...

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