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Daikin REYQ-AATJA Service Manual Download Page 301

SiUS372201EA

Troubleshooting by Error Code

Part 6 Service Diagnosis

294

3.6  Drain Level Control System Abnormality

Applicable 
Models

FXFQ-T, FXZQ-TA, FXZQ-TB, FXUQ-P, FXUQ-PA, FXEQ-P, FXDQ-M, FXSQ-TA, FXSQ-TB, 
FXMQ-PB, FXMQ-TB

Error Code

A3

Method of Error 
Detection

By float switch OFF detection

Error Decision 
Conditions

When rise of water level is not a condition and the float switch goes OFF.

Supposed 
Causes

208-230 V power supply is not provided

Defective float switch or short circuit connector

Defective drain pump

Drain clogging, upward slope, etc.

Defective indoor unit control PCB

Loose connection of connector

Troubleshooting

Caution

Be sure to turn off the power switch before connecting or disconnecting 
connectors, or parts may be damaged.

Replace the float switch (S1L).

Modify the float switch's 
connection and turn ON again.

Connect the drain pump and 
turn ON again.

Connect either a short circuit 
connector or float switch and 
turn ON again.

YES

YES

YES

YES

YES

Replace the indoor unit 
control PCB (A1P).

Loose the connection of 
connector.

NO

NO

NO

YES

NO

NO

YES

NO

NO

Provide 20

8

-230 V power 

supply.

YES

NO

Is power supply 

20

8

-230 V provided?

Water builds up 

in the drain pan.

A short circuit 

connector is 

connected. (

∗

1)

The float switch 

functions normally.

The float 

switch is 

connected to the indoor 

unit control PCB. 

(

∗

1)

The 

drain pump is 

connected to the 

indoor unit control 

PCB. (

∗

2)

The 

float switch 

contact is forming a 

short circuit (continuity check 

with the connector (

∗

1) 

disconnected)

Becomes 

normal when the 

connector (

∗

1) of the 

indoor unit control PCB 

is short circuited.

A

Go to the next page.

Summary of Contents for REYQ-AATJA

Page 1: ...Service Manual Heat Recovery 60 Hz REYQ AATJA 208 230 V REYQ AAYDA 460 V SiUS372201EA...

Page 2: ...2 4 Air Treatment Equipment 15 3 Combination of Outdoor Units 16 4 Capacity Range 17 4 1 Connection Ratio 17 4 2 Outdoor Unit Combinations 18 4 3 Limitation of Capacity Index for Heat Recovery 19 5 Sp...

Page 3: ...1 7 1 BRC1H71W 121 Part 4 Functions and Control 122 1 Operation Flowchart 124 2 Stop Control 125 2 1 Stop due to Error 125 2 2 When System is in Stop Control 125 2 3 Sub Unit Stops during Master Unit...

Page 4: ...ep Thermostat Processing FXTQ TA Models 181 9 15 Fan Control Heater Residual FXTQ TA Models 182 9 16 Interlocked with External Equipment FXTQ TA and CXTQ TA Models 182 Part 5 Field Settings and Test O...

Page 5: ...ality 293 3 6 Drain Level Control System Abnormality 294 3 7 Indoor Fan Motor Lock Overload 296 3 8 Indoor Fan Motor Abnormality 298 3 9 Overload Overcurrent Lock of Indoor Fan Motor 302 3 10 Blower M...

Page 6: ...51 High Pressure Sensor Abnormality 368 3 52 Low Pressure Sensor Abnormality 369 3 53 Inverter PCB Abnormality 370 3 54 Momentary Power Failure during Test Operation 372 3 55 Inverter Radiation Fin Te...

Page 7: ...ommunication Completes 423 4 Check 424 4 1 High Pressure Check 424 4 2 Low Pressure Check 425 4 3 Superheat Operation Check 427 4 4 Power Transistor Check 429 4 5 Refrigerant Overcharge Check 431 4 6...

Page 8: ...S372201EA 1 Introduction 1 Safety Cautions 2 1 1 Warnings and Cautions Regarding Safety of Workers 2 1 2 Warnings and Cautions Regarding Safety of Users 4 2 Icons Used 7 3 Revision History 8 Introduct...

Page 9: ...truction is shown in the illustration or near the symbol 1 1 Warnings and Cautions Regarding Safety of Workers This manual is for the person in charge of maintenance and inspection Warning Do not stor...

Page 10: ...t The use of materials for other refrigerant models may cause a serious accident such as damage to the refrigerant cycle or equipment failure Do not mix air or gas other than the specified refrigerant...

Page 11: ...he same power outlet with other electrical appliances since it may cause an electrical shock excessive heat generation or fire Be sure to use an exclusive power circuit for the equipment and follow th...

Page 12: ...ake sure that the power cable plug is not dirty or loose then insert the plug into a power outlet securely If the plug is dusty or has a loose connection it may cause an electrical shock or fire When...

Page 13: ...nce is 1 M or greater Faulty insulation may cause an electrical shock Be sure to check the drainage of the indoor unit after the repair Faulty drainage may cause water to enter the room and wet the fu...

Page 14: ...tion is used when there is danger that the reader through incorrect manipulation may damage equipment lose data get an unexpected result or have to restart part of a procedure Note Note Note provides...

Page 15: ...History Introduction 8 3 Revision History Month Year Version Revised contents 03 2022 SiUS372201E First edition 12 2022 SiUS372201EA Addition of error codes and prediction codes Model addition FXSQ05...

Page 16: ...nal Appearance 12 2 1 Outdoor Unit 12 2 2 Branch Selector Unit 14 2 3 Indoor Unit 14 2 4 Air Treatment Equipment 15 3 Combination of Outdoor Units 16 4 Capacity Range 17 4 1 Connection Ratio 17 4 2 Ou...

Page 17: ...andard Capacity index 288 312 336 360 384 408 432 456 480 Heat recovery REYQ 288AA 312AA 336AA 360AA 384AA 408AA 432AA 456AA 480AA TJ REYQ AAYDA 460 V Capacity range ton 6 8 10 12 14 16 18 20 22 Power...

Page 18: ...M MSP concealed ducted type FXSQ 05TA 07TA 09TA 12TA 15TA 18TA 24TA 30TA 36TA 48TA 54TA 05TB 07TB 09TB 12TB 15TB 18TB 24TB 30TB 36TB 48TB 54TB Ceiling mounted duct type Middle and high static pressure...

Page 19: ...ance 2 1 Outdoor Unit Single Outdoor Unit REYQ72AATJA REYQ72AAYDA REYQ192AATJA REYQ216AATJA REYQ240AATJA REYQ192AAYDA REYQ216AAYDA REYQ240AAYDA REYQ96AATJA REYQ144AATJA REYQ120AATJA REYQ168AATJA REYQ9...

Page 20: ...TJA REYQ360AAYDA 30 ton REYQ384AATJA REYQ408AATJA REYQ432AATJA REYQ456AATJA REYQ480AATJA REYQ384AAYDA REYQ408AAYDA REYQ432AAYDA REYQ456AAYDA REYQ480AAYDA 32 34 36 38 40 ton REYQ264AATJA REYQ312AATJA R...

Page 21: ...lector Unit Standard Series BS Q54T BS Q54TA Multi Branch Selector Unit Flex Series BSF Q54T Ceiling mounted cassette Round flow with sensing type FXFQ T Shown with BYCQ125B W1 4 way blow ceiling susp...

Page 22: ...FXSQ TB Floor standing type FXLQ M Ceiling mounted duct type Middle and high static pressure FXMQ PB Concealed floor standing type FXNQ M Ceiling mounted duct type High static pressure FXMQ TB Air ha...

Page 23: ...e Outdoor unit multi connection piping kit 1 72 96 120 144 168 192 216 240 6 1 h 8 1 h 10 1 h 12 1 h 14 1 h 16 1 h 18 1 h 20 1 h 22 2 h h BHFP26P100U BHFP26P100UA 24 2 hh 26 2 h h 28 2 hh 30 2 h h 32...

Page 24: ...180 1 200 1 100 100 2 16 20 ton 180 1 180 1 Double outdoor units 160 1 160 1 Notes 1 2 3 If the operational capacity of indoor units is more than 130 low airflow operation is enforced in all the indo...

Page 25: ...AYDA 288AATJA 288AAYDA 312AATJA 312AAYDA 336AATJA 336AAYDA 360AATJA 360AAYDA 384AATJA 384AAYDA Max number of connectable indoor units 41 45 49 54 58 62 64 Total capacity index of indoor units to be co...

Page 26: ...ts per branch 5 5 5 Number of branches 4 6 8 Maximum capacity index of connectable indoor units per branch 1 54 or less 54 or less 54 or less Series configuration Maximum capacity index of connectable...

Page 27: ...1220T brazing connection Suction gas pipe in mm 3 4 19 1 C1220T brazing connection 7 8 22 2 C1220T brazing connection High Low pressure gas pipe in mm 5 8 15 9 C1220T brazing connection 3 4 19 1 C1220...

Page 28: ...0T brazing connection Suction gas pipe in mm 1 1 8 28 6 C1220T brazing connection 1 1 8 28 6 C1220T brazing connection High Low pressure gas pipe in mm 3 4 19 1 C1220T brazing connection 7 8 22 2 C122...

Page 29: ...T brazing connection Suction gas pipe in mm 1 1 8 28 6 C1220T brazing connection 1 1 8 28 6 C1220T brazing connection High Low pressure gas pipe in mm 7 8 22 2 C1220T brazing connection 1 1 8 28 6 C12...

Page 30: ...brazing connection Suction gas pipe in mm 1 1 8 28 6 C1220T brazing connection 1 3 8 34 9 C1220T brazing connection High Low pressure gas pipe in mm 1 1 8 28 6 C1220T brazing connection 1 1 8 28 6 C1...

Page 31: ...Drive Direct drive Direct drive Connecting pipes Liquid pipe in mm 3 4 19 1 C1220T brazing connection 3 4 19 1 C1220T brazing connection Suction gas pipe in mm 1 3 8 34 9 C1220T brazing connection 1...

Page 32: ...ive Direct drive Direct drive Connecting pipes Liquid pipe in mm 3 4 19 1 C1220T brazing connection 3 4 19 1 C1220T brazing connection Suction gas pipe in mm 1 3 8 34 9 C1220T brazing connection 1 3 8...

Page 33: ...e Direct drive Direct drive Connecting pipes Liquid pipe in mm 3 4 19 1 C1220T brazing connection 3 4 19 1 C1220T brazing connection Suction gas pipe in mm 1 5 8 41 3 C1220T brazing connection 1 5 8 4...

Page 34: ...rive Direct drive Direct drive Connecting pipes Liquid pipe in mm 3 4 19 1 C1220T brazing connection 3 4 19 1 C1220T brazing connection Suction gas pipe in mm 1 5 8 41 3 C1220T brazing connection 1 5...

Page 35: ...ve Direct drive Direct drive Connecting pipes Liquid pipe in mm 3 4 19 1 C1220T brazing connection 3 4 19 1 C1220T brazing connection Suction gas pipe in mm 1 5 8 41 3 C1220T brazing connection 1 5 8...

Page 36: ...g connection Suction gas pipe in mm 3 4 19 1 C1220T brazing connection 7 8 22 2 C1220T brazing connection High Low pressure gas pipe in mm 5 8 15 9 C1220T brazing connection 3 4 19 1 C1220T brazing co...

Page 37: ...razing connection Suction gas pipe in mm 1 1 8 28 6 C1220T brazing connection 1 1 8 28 6 C1220T brazing connection High Low pressure gas pipe in mm 3 4 19 1 C1220T brazing connection 7 8 22 2 C1220T b...

Page 38: ...azing connection Suction gas pipe in mm 1 1 8 28 6 C1220T brazing connection 1 1 8 28 6 C1220T brazing connection High Low pressure gas pipe in mm 7 8 22 2 C1220T brazing connection 1 1 8 28 6 C1220T...

Page 39: ...zing connection Suction gas pipe in mm 1 1 8 28 6 C1220T brazing connection 1 3 8 34 9 C1220T brazing connection High Low pressure gas pipe in mm 1 1 8 28 6 C1220T brazing connection 1 1 8 28 6 C1220T...

Page 40: ...ve Direct drive Direct drive Connecting pipes Liquid pipe in mm 3 4 19 1 C1220T brazing connection 3 4 19 1 C1220T brazing connection Suction gas pipe in mm 1 3 8 34 9 C1220T brazing connection 1 3 8...

Page 41: ...Direct drive Direct drive Connecting pipes Liquid pipe in mm 3 4 19 1 C1220T brazing connection 3 4 19 1 C1220T brazing connection Suction gas pipe in mm 1 3 8 34 9 C1220T brazing connection 1 3 8 34...

Page 42: ...rect drive Direct drive Connecting pipes Liquid pipe in mm 3 4 19 1 C1220T brazing connection 3 4 19 1 C1220T brazing connection Suction gas pipe in mm 1 5 8 41 3 C1220T brazing connection 1 5 8 41 3...

Page 43: ...Direct drive Direct drive Connecting pipes Liquid pipe in mm 3 4 19 1 C1220T brazing connection 3 4 19 1 C1220T brazing connection Suction gas pipe in mm 1 5 8 41 3 C1220T brazing connection 1 5 8 41...

Page 44: ...irect drive Direct drive Connecting pipes Liquid pipe in mm 3 4 19 1 C1220T brazing connection 3 4 19 1 C1220T brazing connection Suction gas pipe in mm 1 5 8 41 3 C1220T brazing connection 1 5 8 41 3...

Page 45: ...ctor Unit 48 1 3 Indoor Unit 60 1 4 Outdoor Air Processing Unit 62 2 Functional Parts Layout 63 2 1 REYQ72AA 63 2 2 REYQ96 120AA 65 2 3 REYQ144 168AA 68 2 4 REYQ192 216 240AA 71 3 Refrigerant Flow for...

Page 46: ...rom the accumulator to the compressor 13 Y5S Solenoid valve Refrigerant adjustment Not used 14 Y7S Four way valve Heat exchanger right lower Used to switch outdoor heat exchanger to evaporator or cond...

Page 47: ...to detect liquid pipe temperature of receiver inlet 34 R11T Thermistor Subcooling heat exchanger liquid pipe This detects temperature of liquid pipe for subcooling heat exchanger 35 R12T Thermistor Su...

Page 48: ...DV SLSH 6XFWLRQ JDV SLSH RXU ZD YDOYH 6 RXU ZD YDOYH 6 5 7 5 7 RXU ZD YDOYH 6 OHFWURQLF H SDQVLRQ YDOYH 3ODWH KHDW H FKDQJHU KHFN YDOYH XVLEOH SOXJ RXEOH WXEH KHDW H FKDQJHU DSLOODU WXEH LOWHU LOWHU L...

Page 49: ...from the accumulator to the compressor 16 Y5S Solenoid valve Refrigerant adjustment Not used 17 Y7S Four way valve Heat exchanger right lower Used to switch outdoor heat exchanger to evaporator or co...

Page 50: ...s temperature of liquid pipe for subcooling heat exchanger 40 R12T Thermistor Subcooling heat exchanger gas pipe This detects temperature of gas pipe for subcooling heat exchanger 41 R15T Thermistor M...

Page 51: ...KHDW H FKDQJHU DSLOODU WXEH LOWHU LOWHU LOWHU LOWHU 69 6ROHQRLG YDOYH 6 DSLOODU WXEH OHFWURQLF H SDQVLRQ YDOYH 5 7 KHFN YDOYH KHFN YDOYH 3UHVVXUH UHJXODWLQJ YDOYH 69 6ROHQRLG YDOYH 6 5 7 LOWHU LTXLG S...

Page 52: ...erant flow to the receiver 16 Y4S Solenoid valve Accumulator oil return Used to return oil from the accumulator to the compressor 17 Y5S Solenoid valve Refrigerant adjustment Not used 18 Y6S Solenoid...

Page 53: ...for subcooling heat exchanger 44 R14T Thermistor Subcooling injection 45 R15T Thermistor M1C discharge pipe Used to detect discharge pipe temperature 46 R16T Thermistor M1C body Detects compressor su...

Page 54: ...HU LOWHU 69 6ROHQRLG YDOYH 6 DSLOODU WXEH OHFWURQLF H SDQVLRQ YDOYH 5 7 KHFN YDOYH KHFN YDOYH 3UHVVXUH UHJXODWLQJ YDOYH 6ROHQRLG YDOYH 6 5 7 LOWHU LTXLG SLSH KHFN YDOYH KHFN YDOYH XVLEOH SOXJ 5HFHLYHU...

Page 55: ...n indoor unit downstream of this Branch Selector unit is in heating Max 480 pulse 2 Electronic expansion valve EVH Y2E Opens while in heating or all indoor units are in cooling Max 6 000 pulse 3 Elect...

Page 56: ...TAVJ C 4D133271 3 3 JDV SLSH FRQQHFWLRQ SRUW LOWHU OHFWURQLF SDQVLRQ 9DOYH 9 LOWHU OHFWURQLF SDQVLRQ 9DOYH 96 LOWHU LTXLG SLSH FRQQHFWLRQ SRUW 6XFWLRQ JDV SLSH FRQQHFWLRQ SRUW LOWHU RXEOH SLSH KHDW H...

Page 57: ...lve Suction Gas pipe connection port Liquid pipe connection port Gas pipe connection port Liquid pipe connection port Gas pipe connection port Liquid pipe connection port Gas pipe connection port Liqu...

Page 58: ...F unit Liquid pipe connection port Suction gas pipe connection port HP LP gas pipe connection port Gas pipe connection port Liquid pipe connection port Gas pipe connection port Liquid pipe connection...

Page 59: ...ction port Liquid pipe connection port Gas pipe connection port Liquid pipe connection port Gas pipe connection port Liquid pipe connection port Gas pipe connection port Liquid pipe connection port Ga...

Page 60: ...tion Electronic Expansion Valve HP LP gas Electronic Expansion Valve Suction Electronic Expansion Valve HP LP gas Electronic Expansion Valve Suction Electronic Expansion Valve HP LP gas Electronic Exp...

Page 61: ...RQ 9DOYH 6XFWLRQ RXEOH SLSH KHDW H FKDQJHU 8QLW LTXLG SLSH FRQQHFWLRQ SRUW 8QLW OHFWURQLF SDQVLRQ 9DOYH 6XE FRRO 8QLW LOWHU 3 3 JDV SLSH FRQQHFWLRQ SRUW DV SLSH FRQQHFWLRQ SRUW OHFWURQLF SDQVLRQ 9DOYH...

Page 62: ...connectionport Liquidpipe connectionport Gaspipe connectionport Liquidpipe connectionport Gaspipe connectionport Liquidpipe connectionport Gaspipe connectionport Liquidpipe connectionport Gaspipe con...

Page 63: ...LTXLG SLSH FRQQHFWLRQ SRUW OHFWURQLF SDQVLRQ 9DOYH 6XFWLRQ OHFWURQLF SDQVLRQ 9DOYH 6XFWLRQ LOWHU 8QLW RXEOH SLSH KHDW H FKDQJHU OHFWURQLF SDQVLRQ 9DOYH 6XE FRRO LOWHU LOWHU OHFWURQLF SDQVLRQ 9DOYH 3 3...

Page 64: ...Q JDV SLSH FRQQHFWLRQ SRUW XQLW RXEOH SLSH KHDW H FKDQJHU LOWHU LTXLG SLSH FRQQHFWLRQ SRUW DV SLSH FRQQHFWLRQ SRUW LOWHU XQLW RXEOH SLSH KHDW H FKDQJHU LOWHU LTXLG SLSH FRQQHFWLRQ SRUW DV SLSH FRQQHFW...

Page 65: ...SH FRQQHFWLRQ SRUW LOWHU LOWHU LOWHU LOWHU LOWHU OHFWURQLF SDQVLRQ 9DOYH 6XE FRRO XQLW RXEOH SLSH KHDW H FKDQJHU LOWHU LTXLG SLSH FRQQHFWLRQ SRUW DV SLSH FRQQHFWLRQ SRUW LOWHU XQLW RXEOH SLSH KHDW H F...

Page 66: ...H FKDQJHU LOWHU LTXLG SLSH FRQQHFWLRQ SRUW DV SLSH FRQQHFWLRQ SRUW LOWHU XQLW RXEOH SLSH KHDW H FKDQJHU LOWHU LTXLG SLSH FRQQHFWLRQ SRUW DV SLSH FRQQHFWLRQ SRUW LOWHU XQLW RXEOH SLSH KHDW H FKDQJHU LO...

Page 67: ...ontrol 3 Liquid pipe thermistor R2T R2T R2T Used for gas superheating degree control while in cooling or subcooling degree control while in heating 4 Gas pipe thermistor R3T R3T R3T Used for gas super...

Page 68: ...H FKDQJHU LTXLG SLSH FRQQHFWLRQ SRUW LOWHU DQ OHFWURQLF H SDQVLRQ YDOYH 0 DV SLSH FRQQHFWLRQ SRUW C 4D141716 4 2 1 3 Fan Indoor heat exchanger Filter Filter Liquid piping connection port Gas piping c...

Page 69: ...y tube Used to reduce pressure from high to low in bypassing hot gas 4 R1T Suction air thermistor Used to turn ON or OFF the thermostat 5 R2T Liquid pipe thermistor Used to control the opening degree...

Page 70: ...gas pipe Y8S S1NPH High pressure sensor S1PH High pressure switch M1C R18T Thermistor M1C body R17T R4T Thermistor Receiver gas purge Y5S Solenoid valve Refrigerant adjustment Y4E Electronic expansio...

Page 71: ...t cooling bypass Y6E Electronic expansion valve Refrigerant cooling IPM Y7E Electronic expansion valve Refrigerant cooling air Electronic expansion valve Heat exchanger right upper Y1E R2T Thermistor...

Page 72: ...rankcase heater R4T Thermistor Receiver gas purge R15T R16T Y5S Solenoid valve Refrigerant adjustment Y4E Electronic expansion valve Receiver gas purge Thermistor M1C body M2C Compressor 2 E2HC Crankc...

Page 73: ...R3T Y8E Not used R8T Thermistor Heat exchanger right lower liquid pipe R7T R11T R12T Electronic expansion valve Heat exchanger right lower Y7E Electronic expansion valve Refrigerant cooling air Electr...

Page 74: ...yout SiUS372201EA 67 Part 2 Refrigerant Circuit 3 3 3 3 5 3 5 3 1 1 3 3 3 3 5 3 5 3 REYQ96 120AATJA REYQ96 120AAYDA Inside Electrical Component Box R20T Thermistor Box air C 1P647827G C 1P645890G R20T...

Page 75: ...e heater Y4S Solenoid valve Accumulator oil return Compressor 1 M1C E1HC Crankcase heater S1PH High pressure switch M1C R4T Thermistor Receiver gas purge R15T R16T Y5S Solenoid valve Refrigerant adjus...

Page 76: ...olenoid valve Refrigerant cooling bypass Y11S Y1E Electronic expansion valve Heat exchanger right upper Solenoid valve Liquid shutoff Thermistor Heat exchanger right deicer Thermistor Heat exchanger r...

Page 77: ...nal Parts Layout Part 2 Refrigerant Circuit 70 3 3 3 5 3 5 3 3 3 3 3 3 5 3 5 3 1 1 REYQ144 168AATJA REYQ144 168AAYDA Inside Electrical Component Box R20T Thermistor Box air C 1P647825G C 1P645889F R20...

Page 78: ...2C Crankcase heater E2HC Thermistor Heat exchanger right deicer R8T Solenoid valve Refrigerant adjustment Y5S Electronic expansion valve Receiver gas purge Y4E Thermistor Heat exchanger left deicer R2...

Page 79: ...hanger right upper liquid pipe R6T Thermistor Heat exchanger right lower liquid pipe R7T R11T R10T Thermistor Receiver inlet Electronic expansion valve Subcooling heat exchanger Y6S Electronic expansi...

Page 80: ...US372201EA 73 Part 2 Refrigerant Circuit 3 3 3 3 5 3 5 1 1 3 3 3 3 3 5 3 5 3 1 1 REYQ192 216 240AATJA REYQ192 216 240AAYDA Inside Electrical Component Box R20T Thermistor Box air C 1P647825G C 1P64588...

Page 81: ...valve Fusible plug Double tube heat exchanger Capillary tube Filter Filter Filter Filter SV Solenoid valve Y5S Capillary tube Electronic expansion valve Y4E R10T Check valve Check valve Pressure regul...

Page 82: ...anger Capillary tube Filter Filter Filter Filter SV Solenoid valve Y5S Capillary tube Electronic expansion valve Y4E R10T Check valve Check valve Pressure regulating valve SV Solenoid valve Y3S Liquid...

Page 83: ...e heat exchanger Capillary tube Filter Filter Filter Filter SV Solenoid valve Y5S Capillary tube Electronic expansion valve Y4E R10T Check valve Check valve Pressure regulating valve SV Solenoid valve...

Page 84: ...ube heat exchanger Capillary tube Filter Filter Filter Filter SV Solenoid valve Y5S Capillary tube Electronic expansion valve Y4E R10T Check valve Check valve Pressure regulating valve Solenoid valve...

Page 85: ...ube heat exchanger Capillary tube Filter Filter Filter Filter SV Solenoid valve Y5S Capillary tube Electronic expansion valve Y4E R10T Check valve Check valve Pressure regulating valve SV Solenoid val...

Page 86: ...ble plug Double tube heat exchanger Capillary tube Filter Filter Filter Filter SV Solenoid valve Y5S Capillary tube Electronic expansion valve Y4E R10T Check valve Check valve Pressure regulating valv...

Page 87: ...ction Capillary tube Check valve Strainer Oil separator Filter Capillary tube Compressor M2C INV2 SV Solenoid valve Y1S R18T HPS High pressure switch S1PH High pressure switch S2PH R17T Solenoid SV He...

Page 88: ...Solenoid valve Y3S Check valve Check valve Fusible plug Receiver R15T R16T Stop valve With service 5 16in 7 9mm flare connection Capillary tube Check valve Strainer Oil separator Filter Capillary tube...

Page 89: ...lary tube Check valve Strainer Oil separator Filter Capillary tube Compressor M2C INV2 SV Solenoid valve Y1S R18T HPS High pressure switch S1PH High pressure switch S2PH R17T Solenoid SV Heat exchange...

Page 90: ...heck valve Strainer Oil separator Filter Capillary tube Compressor M2C INV2 SV Solenoid valve Y1S R18T HPS High pressure switch S1PH High pressure switch S2PH R17T Solenoid valve Y3S SV Heat exchanger...

Page 91: ...e Check valve Strainer Oil separator Filter Capillary tube Compressor M2C INV2 SV Solenoid valve Y1S R18T HPS High pressure switch S1PH High pressure switch S2PH R17T Solenoid valve Y3S SV Heat exchan...

Page 92: ...tion Capillary tube Check valve Strainer Oil separator Filter Capillary tube Compressor M2C INV2 SV Solenoid valve Y1S R18T HPS High pressure switch S1PH High pressure switch S2PH R17T Solenoid valve...

Page 93: ...ion valve Y5E R23T Four way valve Y9S R21T SV Solenoid valve Y6S Check valve Check valve Strainer Oil separator Filter Capillary tube Compressor M2C INV2 SV Solenoid valve Y1S R18T HPS High pressure s...

Page 94: ...our way valve Y9S R21T SV Solenoid valve Y6S Check valve Check valve Strainer Oil separator Filter Capillary tube Compressor M2C INV2 SV Solenoid valve Y1S R18T HPS High pressure switch S1PH High pres...

Page 95: ...Y5E R23T Four way valve Y9S R21T SV Solenoid valve Y6S Check valve Check valve Strainer Oil separator Filter Capillary tube Compressor M2C INV2 SV Solenoid valve Y1S R18T HPS High pressure switch S1P...

Page 96: ...Y5E R23T Four way valve Y9S R21T SV Solenoid valve Y6S Check valve Check valve Strainer Oil separator Filter Capillary tube Compressor M2C INV2 SV Solenoid valve Y1S R18T HPS High pressure switch S1PH...

Page 97: ...ve Y5E R23T Four way valve Y9S R21T SV Solenoid valve Y6S Check valve Check valve Strainer Oil separator Filter Capillary tube Compressor M2C INV2 SV Solenoid valve Y1S R18T HPS High pressure switch S...

Page 98: ...nic expansion valve Y5E R23T Four way valve Y9S R21T SV Solenoid valve Y6S Check valve Check valve Strainer Oil separator Filter Capillary tube Compressor M2C INV2 SV Solenoid valve Y1S R18T HPS High...

Page 99: ...1W 108 3 3 When Wireless Remote Controller is Used Together 110 4 Address Setting for Wireless Remote Controller 111 5 Centralized Control Group No Setting 113 5 1 BRC1E73 113 5 2 BRC1H71W 115 5 3 Wir...

Page 100: ...FXZQ TA BRC082A42W for BYFQ60C3W1W BRC082A42S for BYFQ60C3W1S BRC082A41W for BYFQ60B3W1 FXZQ TB BRC082A42W for BYFQ60C3W2W BRC082A41W for BYFQ60B3W1 FXUQ P FXUQ PA FXEQ P FXDQ M BRC4C82 FXSQ TA BRC08...

Page 101: ...nds to press the buttons on the remote controller damage may result 1 Operation mode selector button Press this button to select the operation mode of your preference Available modes vary with the ind...

Page 102: ...highlight the next items on the right hand side Each screen is scrolled in the right hand direction 7 Left button Used to highlight the next items on the left hand side Each screen is scrolled in the...

Page 103: ...on mode changeover Fan speed control Menu display Confirmation of each setting On Off Cancel Operation lamp Press the Cancel button for 4 seconds or more Press the Cancel button once Press the Cancel...

Page 104: ...rating Blinks red Error is occurring Lights up blinks green Bluetooth connecting c LCD Displays the current setpoint and air conditioner operation status d NAVIGATE ADJUST button Navigate right Adjust...

Page 105: ...Installer menu Bluetooth Setting This screen is a menu for the administrator See the next page for items which can be selected 12 34 A3 01 Unit 00 This screen displays the time and the status of the...

Page 106: ...ection Airflow direction 1 setting h Depends on current setting Vertical Airflow Airflow direction 2 setting h Depends on current setting Ventilation Mode Ventilation mode setting h Depends on current...

Page 107: ...Contrast Contrast setting h h Clock Setting Clock setting h h Standard Temp Scale reference temperature setting h h About Administrator information h h Admin Password Administrator password setting h...

Page 108: ...to change the operation mode between cool and heat i Under centralized control Displayed if the system is under the management of a multi zone controller Optional and the operation of the system throu...

Page 109: ...controller setting Text mode Auto Cool 73 Room Icon mode 73 F 74 Text mode Scale screen Auto Cool Cool Warm Icon mode Scale screen When in the scale screen the setpoint can be changed in the range of...

Page 110: ...splay the information screen Home screen Auto Cool 73 Room 73 F 74 Text mode Icon mode Press and hold on the Home screen for 5 seconds Information screen 12 34 The screen switches to the Information s...

Page 111: ...ontroller during this time Not Displayed The remote controller has master control Able to select heating cooling operation Backup Indicates that backup operation is being carried out Energy savings In...

Page 112: ...p The display shows the set fan speed When the INSPECTION TEST button is pressed the display shows the system mode is in 13 14 15 16 17 TIMER RESERVE CANCEL BUTTON AIRFLOW DIRECTION ADJUST BUTTON OPER...

Page 113: ...ange a remote controller from Main to Sub proceed as follows 3 1 1 Field Settings The designation of the main and sub remote controllers can be swapped Note that this change requires turning the power...

Page 114: ...You may change the Main Sub setting of the remote controller while Checking the connection Please stand by is displayed by pressing and holding the Mode Selector button for 4 seconds or longer 1 It is...

Page 115: ...uto operation mode Filter auto clean Setback temperature setpoints Draft prevention If a sub controller does not display the home screen 2 minutes after its designation turn off the power Individual a...

Page 116: ...anation 1 main 2 sub Home screen 2 When the U5 error code appears press and hold until 2 appears on the screen When the U8 error code appears press and hold until 1 appears on the screen Result A cont...

Page 117: ...h a wired and a wireless remote controller for 1 indoor unit the wired controller should be set to Main Therefore the Main Sub switch SS1 of the signal receiver PCB must be set to Sub Main Sub Main Su...

Page 118: ...le below The address for the wireless remote controller is set to 1 at the factory To change the setting proceed as follows 1 Press FILTER SIGN RESET button and INSPECTION TEST button at the same time...

Page 119: ...ings A b Remote Controller Indoor Unit Multiple setting Display on remote controller Behavior to the remote controller operation when the functions are restricted as by an external control Other than...

Page 120: ...oup Address Select Group Address and then press the Menu OK button Press the Cancel button once Press the Cancel button once Service settings menu is displayed Item 2 is displayed Item 2 is displayed...

Page 121: ...th the operation manual for maintenance Group Address Group Select Group Address and then press the Menu OK button Select Group Address Group and then press the Menu OK button Select the desired Group...

Page 122: ...hen a centralized controller is connected The group and unit address can be set and released NOTICE Don t forget to release the group address before disconnecting the centralized controller because th...

Page 123: ...bout 1 minute on the liquid crystal display This is not an operative fault UP button DOWN button MODE button RESERVE button Mode No Field setting mode Group No INSPECTION TEST button Central Remote Co...

Page 124: ...Cancel button for 4 seconds or more Press and hold the Cancel button for 4 seconds or more Select the desired item from the Maintenance menu and then press the Menu OK button Maintenance menu is disp...

Page 125: ...Set Indoor unit Airnet Address Unit No Address Set Outdoor unit Airnet Address Unit No Address Set Error History RC Error History Unit No Error Date Time Up to 10 errors received by the remote control...

Page 126: ...ed EV Degree that electronic expansion valve is open pulse MP Drain pump ON OFF EH Electric heater ON OFF Hu Humidifier ON OFF 3 TBF Anti freezing control ON OFF FLOAT Float switch OPEN CLOSE T1 T2 T1...

Page 127: ...ly sending to the gas furnace Displays the fan demand that CXTQ TA is currently sending to the gas furnace Current status of heat pump ON OFF for CXTQ TA HP OFF 00 HP ON 01 Current status of gas combu...

Page 128: ...Administrator Menu Installer Menu SiUS372201EA 121 Part 3 Remote Controller 7 Administrator Menu Installer Menu 7 1 BRC1H71W Refer to page 99 for details...

Page 129: ...ol of Outdoor Fans 136 5 6 Heat Exchanger Control 138 6 Protection Control 139 6 1 High Pressure Protection Control 139 6 2 Low Pressure Protection Control 141 6 3 Discharge Pipe Protection Control 14...

Page 130: ...Start Control In Heating Operation Only 174 9 10 Louver Control for Preventing Ceiling Dirt 175 9 11 Heater Control Except FXTQ TA Models 176 9 12 Heater Control FXTQ TA Models 177 9 13 Gas Furnace Co...

Page 131: ...on before startup 1 Startup control in cooling 2 Startup control in heating Basic control 1 Normal control 2 Compressor PI control 3 Operation priority and rotation of compressors 4 Compressor step co...

Page 132: ...eaches certain number Refer to Error Codes and Descriptions on page 275 of the troubleshooting for the items to determine the error 2 2 When System is in Stop Control The four way valves retain the co...

Page 133: ...the pressure within the refrigerant system In addition the outdoor fan carry out the residual operation for a while to accelerate pressure equalizing and to suppress migration of the refrigerant to th...

Page 134: ...inverter is turned ON to charge the capacitor To avoid stresses to the compressor due to liquid refrigerant return or else after the startup the following control is made and the position of the four...

Page 135: ...xpansion valve main Y1E Y2E Y3E Fan motor M1F M2F Pc Pe 0 17 MPa 24 7 psi A B C D E Step 2X 3 0 rps F 5 sec A B C D E 0 pulse Maximum step PI control Compressor motor M1C M2C Electronic expansion valv...

Page 136: ...valve Heat exchanger left Y5E Electronic expansion valve Subcooling heat exchanger Y3E Superheating degree control discharge pipe protection Superheating degree control discharge pipe protection Supe...

Page 137: ...apacity 2 Constant control TcS is fixed to the set value Tc setting Te High pressure equivalent saturation temperature TeS Target temperature of Tc Varies depending on Tc setting operating frequency e...

Page 138: ...1 4 16 19 4 82 49 1 148 123 1 17 19 8 83 49 8 149 124 8 18 20 1 84 50 5 150 127 3 REYQ72AA Heating upper limit 19 20 5 85 51 2 20 20 7 86 52 0 21 21 0 87 52 7 22 21 3 88 53 4 23 21 6 89 54 2 24 21 9 9...

Page 139: ...81 95 5 108 3 95 5 108 3 32 25 8 0 0 29 7 0 0 107 73 3 0 0 34 6 38 7 182 96 8 109 8 96 8 109 8 33 26 2 0 0 29 7 0 0 108 74 4 0 0 35 1 39 2 183 98 1 111 3 98 1 111 3 34 26 5 0 0 29 7 0 0 109 75 4 0 0 3...

Page 140: ...29 2 185 94 2 89 2 94 2 89 2 36 27 4 0 0 27 4 0 0 111 81 1 0 0 33 7 29 6 186 95 6 90 6 95 6 90 6 37 27 8 0 0 27 8 0 0 112 82 3 0 0 34 2 30 0 187 96 9 91 9 96 9 91 9 38 28 2 0 0 28 2 0 0 113 83 5 0 0...

Page 141: ...4 0 0 24 4 0 0 110 69 0 0 0 32 0 37 0 185 95 1 100 2 95 1 100 2 36 24 8 0 0 24 8 0 0 111 70 0 0 0 32 5 37 5 186 96 5 101 6 96 5 101 6 37 25 1 0 0 25 1 0 0 112 71 0 0 0 33 0 38 0 187 97 9 103 0 97 9 1...

Page 142: ...onstant Subcooling electronic expansion valve EVT control In order to make the maximum use of the subcooling heat exchanger this function is used to exert PI control on the electronic expansion valve...

Page 143: ...3 333 12 342 0 342 0 13 349 349 13 359 0 359 0 14 366 366 14 377 0 377 0 15 384 384 15 396 0 396 0 16 402 402 16 213 203 213 203 17 422 422 17 223 213 223 213 18 442 442 18 234 224 234 224 19 464 464...

Page 144: ...31 428 531 428 21 531 428 531 428 22 391 0 391 0 22 558 445 558 445 22 558 445 558 445 23 406 0 406 0 23 586 465 586 465 23 586 465 586 465 24 216 206 216 206 24 614 485 614 485 24 614 485 614 485 25...

Page 145: ...se CL increase HL decrease Symbol meanings CL Cooling Load HL Heating Load CL decrease HL increase CL increase HL decrease 1 2 Left side Upperside Right Outdoor unit Upperside Right Lowerside Right Lo...

Page 146: ...step down 1 step up 2 step down After 10 seconds After 15 seconds After 15 seconds After 10 seconds Pc 3 57 MPa 518 psi Pc 3 70 MPa 537 psi Pc 3 14 MPa 455 psi Pc 3 43 MPa 498 psi Pc 3 67 MPa 532 psi...

Page 147: ...72 MPa 540 psi Normal control 9 step down All units Compressor step 1 3 step up Current step maintained High pressure standby 2 times within 40 minutes Pc High pressure sensor detection value for mast...

Page 148: ...E4 is displayed Low pressure standby 3 times within 60 minutes Low pressure standby 4 times within 60 minutes Normal control 9 step down 9 step up 3 step up 21 step down After 10 seconds After 15 sec...

Page 149: ...5 C A F Y 9 F A C X 10 C A F Y 18 F A C X 15 C A F Y 27 F A C X C A F Y F Compressor step 1 After 20 seconds HTdi 135 C 275 F HTdi 120 C 248 F continues for 10 minutes Ti 120 C 248 F continues for 5...

Page 150: ...than 49 0 A more than 49 0 A B less than 48 3 A less than 29 4 A less than 29 4 A less than 29 4 A less than 48 3 A less than 48 3 A less than 48 3 A C more than 51 0 A more than 32 5 A more than 32 5...

Page 151: ...3 C 217 F more than 103 C 217 F more than 103 C 217 F more than 108 C 226 F more than 108 C 226 F more than 108 C 226 F Normal operation Fin temperature standby Reduce compressor capacity When occurri...

Page 152: ...hanger right upper Y1E Same as normal control Same as normal control Electronic expansion valve Heat exchanger right lower Y2E Electronic expansion valve Heat exchanger left Y5E Electronic expansion v...

Page 153: ...tric symbol Function of functional part Compressor motor M1C M2C Constant low pressure control Fan motor M1F M2F For heat exchanger mode Electronic expansion valve Heat exchanger right upper Y1E Same...

Page 154: ...rmal control Non operating unit 224 pulse Thermostat OFF unit Forced thermostat ON PI control Branch Selector unit actuator Normal cooling Electronic expansion valve EVSC Y1E Thermostat ON 0 pulse Non...

Page 155: ...e Heat exchanger right lower Y7S Four way valve Heat exchanger left Y9S Four way valve HP LP gas pipe Y8S Solenoid valve Refrigerant cooling bypass Y11S Same as normal control Ending condition A lapse...

Page 156: ...Solenoid valve Refrigerant adjustment Y5S OFF Solenoid valve Injection Y6S ON Four way valve Heat exchanger right upper Y10S OFF Four way valve Heat exchanger right lower Y7S OFF Four way valve Heat...

Page 157: ...OFF Evaporating side ON Four way valve Heat exchanger right lower Y7S Four way valve Heat exchanger left Y9S Four way valve HP LP gas pipe Y8S OFF Solenoid valve Refrigerant cooling bypass Y11S Same...

Page 158: ...way valve Heat exchanger right lower Y7S OFF ON Four way valve Heat exchanger left Y9S OFF ON Four way valve HP LP gas pipe Y8S OFF Solenoid valve Refrigerant cooling bypass Y11S Same as normal contr...

Page 159: ...ion or One of the outdoor units is stopped for 20 minutes or more only in cooling Example The following diagram shows outdoor unit rotation Master unit and sub unit in this section are the names for i...

Page 160: ...ectronic expansion valve will fully open and the electronic expansion valve of the indoor unit will open to activate the heating circuit The required switching time is approximately 6 minutes Field se...

Page 161: ...valve will fully open and the electronic expansion valve of the indoor unit will open to activate the heating circuit The required switching time is approximately 6 minutes Field settings however can...

Page 162: ...ion or cooling and heating simultaneous operation Using the dual pressure gas pipe as a suction gas pipe 2 Pump down residual operation 3 Pre startup control Switching between the electronic expansion...

Page 163: ...outdoor units On the system with 1 outdoor unit this emergency operation is not available 8 2 Demand Operation In order to limit the power consumption the capacity of outdoor unit is forcibly reduced...

Page 164: ...kit MP Drain pump kit ON MP Drain pump kit ON MP Closed Electronic expansion valve Capacity control Electronic expansion valve Closed YE MA OFF EH OFF EH Humidifier OFF Hu Humidifier OFF Hu YE The pr...

Page 165: ...Hu Fan Operating in L mode MF Fan Operating in L mode after it stops for 6 min MF YE Drain pump kit YE MP Swing flap Swing flap Set wind direction Fan MF Operating with set airflow rate YE Closed Pro...

Page 166: ...progress 4 min Is hot starting in progress Is defrost operation in progress Heating Operation A B Thermostat status No No 15 16 Option Option Option Option OFF Humidifier ON OFF Humidifier OFF ON Hum...

Page 167: ...speed instruction from the remote controller the fan is put into operation in LL mode while in heating operation 13 Wind direction When the heating thermostat turns OFF the wind direction will be set...

Page 168: ...ting in heating operation Control target temperature remote controller displayed temperature 2 C 3 6 F The temperature difference for cooling heating mode switching is 5 C 9 F The above also applies t...

Page 169: ...suction air thermistor and the infrared floor sensor It is difficult to use only suction air temperature control for underfoot air conditioning The temperature difference for cooling heating mode swi...

Page 170: ...temperature fine adjustment control is carried out using a suction air thermistor or using the remote controller thermistor near the position of the user when the suction temperature is near the set...

Page 171: ...ture Assuming the set temperature in the figure above is 24 C 75 F and the suction temperature has changed from 18 C 64 F to 28 C 82 F A D This example also assumes there are several other air conditi...

Page 172: ...for FXTQ TA CXTQ TA is set to 02 Tro will be the same as the cooling set temperature T Room temperature Remote controller set temperature Tro Room temperature at the start of dry operation Tr Room tem...

Page 173: ...perature to operate outside of use range To avoid the above condition a limit based on the suction air temperature is set for the use range of the temperature around people Cooling operation When the...

Page 174: ...de Control temp Differential value set to 1 C 1 8 F Set heating temp Set cooling temp Heating mode Control temp Differential value set to 2 C 3 6 F Heating mode Control temp Differential value set to...

Page 175: ...ously After the thermostat turns OFF the drain pump continues to operate for another 5 minutes Float switch Error display Thermostat running OFF OFF ON ON ON OFF Drain pump ON OFF 5 min OFF OFF ON ON...

Page 176: ...the drain pump turns ON simultaneously 1 If the float switch continues to turn OFF and ON 5 times consecutively it is judged as a drain system error and the error code AF is displayed on the remote co...

Page 177: ...lower As T Remote controller set temp Suction air temp becomes smaller SHS becomes higher Subcooling degree control in heating operation This function is used to adjust the opening of the electronic...

Page 178: ...re 1 C 30 2 F for total of 40 minutes or Liquid pipe temperature 5 C 23 F for total of 10 minutes Condition for cancelling Liquid pipe temperature 7 C 44 6 F for 10 minutes continuously Concept of fre...

Page 179: ...3 8 F for total of 15 minutes or Liquid pipe temperature 0 C 32 F for 1 minute continuously During freeze up prevention control the airflow rate is fixed to LL The cancelling conditions are same as th...

Page 180: ...tart from thermostat OFF mode for prevention of cold air Swing LL Horizontal Horizontal Horizontal Horizontal Airflow direction set LL Horizontal Horizontal Horizontal Horizontal Stop Swing OFF Horizo...

Page 181: ...is OFF before initiating the hot start OFF Hot start control Hot start in progress Normal control Normal control H L remote controller setting LL OFF Remote controller setting P0 Horizontal Fan Louver...

Page 182: ...nd FXEQ P models Factory setting FXFQ T models draft prevention position FXZQ TA FXZQ TB FXEQ P models standard position 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 E...

Page 183: ...cted by converting the heater temperature into the condensing pressure equivalent saturated temperature Tc according to the temperature detection through the high pressure sensor S1NPH of the outdoor...

Page 184: ...electric heater Heating Automatic heating Auxiliary heater enabled 1 Not in heating Automatic heating Auxiliary heater enabled 0 3 Heater not allowed Heater allowed Heater 1 OFF Heater 2 OFF OR OR OR...

Page 185: ...1 4 OR Not during defrost oil return Fan motor system error Heater ON permission Defrost oil return 0 4 1 High pressure condition 2 Liquid pipe temperature condition 3 Auxiliary heater enabled 4 Heate...

Page 186: ...operation Heater 1 ON Heater 2 ON OFF for single heater Fan ON Electric heater capacity setting Setting not available Thermostat step 2 ON Time up Electric heater capacity setting Setting available N...

Page 187: ...furnace combustion heating Detail The airflow rate during gas furnace operation depends on the intensity of combustion heating and therefore may be different from the airflow setting displayed on the...

Page 188: ...er to page 200 4 A and B values vary automatically based on the field setting 12 22 2 5 If directly after a change in conditions it is such that the thermostat could be either ON or OFF controlled tem...

Page 189: ...eater is ON the airflow rate of the fan will be whichever is the largest between the CFM dictated by the heater s own capacity or the fan tap CFM determined by other controls 2 Fan residual operation...

Page 190: ...ermostat ON signal Cooling mode When the thermostat is ON External output ON 2 OR Tcon Ts continues for 1 minute Economizer set time 3 Free cooling only Economizer set time 3 Free cooling only Thermos...

Page 191: ...ting the BS Buttons and DIP Switches on the PCB 220 2 4 Connecting the PC Configurator to the Outdoor Unit 223 2 5 Monitoring Function and Field Settings 223 2 6 Cool Heat Mode Changeover 248 2 7 Nigh...

Page 192: ...he case of group total setting 1 Press and hold Cancel button for 4 seconds or more Service settings menu is displayed 2 Select Field Settings in the Service Settings menu and press Menu OK button Fie...

Page 193: ...een returns 8 In the case of multiple setting changes repeat 3 to 7 9 After all setting changes are completed press Cancel button twice 10 Backlight goes out and Checking the connection Please standby...

Page 194: ...Text mode Icon mode Mode 20 Unit 00 Enter Return Mode 20 Unit 00 a b Press or button to select Mode No and press a Mode No b Unit No Sub menu screen Text mode Icon mode Mode 20 Unit 00 Enter Return Mo...

Page 195: ...on mode Press or button to select Enter or and then press button to set the selection Sub menu screen Text mode Icon mode SW 00 Set Cancel 01 SW 00 01 b a Press or button select First Code No and then...

Page 196: ...he setting has been changed the screen may return to the home screen without returning to the installer menu CAUTION settings For more information see the installation manual of the optional accessory...

Page 197: ...TEST button for 4 seconds during normal mode to enter the field setting mode 2 Press the MODE button to select the desired mode No 3 Press the UP button to select the first code No 4 Press the DOWN bu...

Page 198: ...temperature Ton Toff 2 Auxiliary electric heater OFF temperature Toff 3 Setting of airflow rate when heating Standard Slightly increased Increased 201 3 Electric heater setting Refer to page on the ri...

Page 199: ...ressure 209 6 External static pressure settings Refer to page on the right for details 209 14 24 4 Optional kit setting UV lamp humidifier economizer Refer to page on the right for details 210 5 Dry m...

Page 200: ...ce area detection h h h 11 21 1 Auxiliary electric heater ON temperature h h h h 1 Auxiliary electric heater ON OFF temperature h h 2 Auxiliary electric heater OFF temperature h h h h 3 Setting of air...

Page 201: ...set temperature 9 Mold proof operation setting h 11 Gas furnace test mode 15 25 0 Drain pump operation settings h 1 Humidification when heating thermostat is OFF h h h h h h h 2 Setting of direct duc...

Page 202: ...rate when heating 3 Electric heater setting h 5 Electric heater capacity setting h 6 Detection rate setting 7 Automatic airflow adjustment h 8 Compensating the temperature around people 9 Compensatin...

Page 203: ...ng of ventilation h h h h h h h h 1b 4 Display of error codes on the remote controller h h h h h h h h 1c 0 Room temperature display h h h h h h h h 1 Thermistor sensor for auto changeover and setback...

Page 204: ...istor Factory setting Setting 10 20 1 01 Long life filter 02 Ultra long life filter Filter contamination heavy light 10 20 0 Light 01 Heavy 02 Light 01 Heavy 02 Model FXFQ T 2 500 hrs 1 250 hrs 10 000...

Page 205: ...6 28 30 32 34 66 2 62 6 69 8 73 4 77 80 6 84 2 87 8 91 4 95 98 6 F F 57 2 60 8 64 4 68 71 6 75 2 78 8 82 4 86 89 6 93 2 In cooling In heating Suction air temperature Suction air temperature Suction ai...

Page 206: ...as 10 20 2 01 02 03 field setting 10 20 6 has priority for group connection and 10 20 2 has priority for individual connection 1 4 5 Time for Absence Area Detection For units with an infrared presence...

Page 207: ...F Heating at 20 C 68 F State of absence 30 60 60 120 Elapsed time of absence min The values in parentheses represent the time when Second code No is 02 Set temperature Toff S 1 Ton S 1 Thermostat OFF...

Page 208: ...7 2 F 3 5 C 6 3 F 3 C 5 4 F 2 5 C 4 5 F 2 C 3 6 F 1 5 C 2 7 F Toff 06 0 5 C 0 9 F h h h h h h 05 0 C 0 F h h h h h 04 0 5 C 0 9 F h h h h 03 1 C 1 8 F h h h 02 1 5 C 2 7 F h h 01 2 C 3 6 F h h Availa...

Page 209: ...heater with heat pump allowed Allowed Factory setting Model Mode No First Code No Second Code No 01 02 03 04 05 06 07 08 09 10 Heater kW No heater kit 3 5 6 8 10 15 19 20 25 FXTQ09TAVJUA 11 21 5 h h...

Page 210: ...to change the airflow rate adjust it by pressing the airflow rate control button to select High Middle or Low 3 Make settings to adjust the airflow rate automatically After setting the operation mode...

Page 211: ...en on the floor temperature the Second code No 04 The infrared floor sensor can be disabled by selecting Suction air temperature only the Second code No 01 Factory setting 1 4 13 Compensating the Floo...

Page 212: ...ature 02 Same as cooling mode set temperature Mode No First Code No Second Code No Contents 12 22 0 01 Indoor unit thermostat ON OFF signal is provided 02 03 Output linked with Start Stop of remote co...

Page 213: ...wireless remote controller or any central remote controller is connected Factory setting The automatic operation mode setting is made by the use of the Operation Mode Selector button 1 4 20 Auto Resta...

Page 214: ...t be surprised and wonder why the air conditioner turned ON suddenly 2 During maintenance if the main power supply is turned OFF while the units are in operation the units will automatically start ope...

Page 215: ...Factory setting 1 4 25 Setting of Airflow Direction Adjustment Range Make the following airflow direction setting according to the respective purpose Factory setting FXZQ TA FXZQ TB FXEQ P Factory set...

Page 216: ...inWG or 150 Pa 0 60 inWG Mode No First Code No Second Code No Contents 13 23 5 01 Standard FXDQ07 12M 10 Pa 0 04 inWG FXDQ18 24M 30 Pa 0 12 inWG 02 High static pressure FXDQ07 12M 15 Pa 0 06 inWG FXDQ...

Page 217: ...120 Pa 0 48 inWG 10 130 Pa 0 52 inWG 11 140 Pa 0 56 inWG 12 150 Pa 0 60 inWG 1 13 160 Pa 0 64 inWG 1 14 180 Pa 0 72 inWG 1 15 200 Pa 0 80 inWG 1 Factory setting Mode No First Code No Second Code No C...

Page 218: ...F or below when the heating thermostat is OFF Factory setting 1 4 34 Setting of Direct Duct Connection This is used when fresh air intake kit equipped with fan is connected If the second code is set...

Page 219: ...isplay For BRC1E73 only A Detailed display screen can be selected as the display screen This setting is used if you do not want Room temperature display to be shown on the Detailed display screen Fact...

Page 220: ...ed natural evaporation type humidifier or branch air duct is equipped due to the possibility of dew condensation This setting restricts the airflow block function preventing that the airflow block is...

Page 221: ...ng 2 Stage 1 2 3 4 Dip switch DS1 Heat Airflow Trim 15 10 OFF OFF OFF OFF 12 8 ON OFF OFF OFF 9 6 OFF ON OFF OFF 6 4 ON ON OFF OFF 3 2 OFF OFF ON OFF 0 0 ON OFF ON OFF 3 2 OFF ON ON OFF 6 4 ON ON ON O...

Page 222: ...n ON by central remote controller only and OFF by remote controller only Centralized Used when you want to turn ON by central remote controller only and turn ON OFF freely by remote controller during...

Page 223: ...ontrol 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 sto...

Page 224: ...rwards upload the configuration to the system 2 1 DIP Switch Setting when Mounting a Spare PCB After replacement with spare PCB be sure to make settings shown in the table on the following page The pr...

Page 225: ...sition of the DIP switches on spare PCB for REYQ AA Change DIP switches at time of power disconnected Application model The setting method represents the position of switches REYQ72AA Set DS2 2 to ON...

Page 226: ...n the inspection door You can see the 3 BS buttons and the 3 seven segment displays and DIP switches Operate the switches and BS buttons with an insulated stick such as a closed ballpoint pen to avoid...

Page 227: ...witches which are located on the outdoor unit PCB A1P Turn ON the power supply of the outdoor unit and all indoor units When the communication between indoor units and outdoor unit s is established an...

Page 228: ...on Example Checking the content of parameter 1 10 to know how many indoor units are connected to the system Mode 1 Setting 10 Make sure the segment indication is displayed in operational default mode...

Page 229: ...TURN BS3 button again to start operation according to the chosen value Example Checking the content of parameter 2 18 to define the high static pressure setting of the outdoor unit s fan Mode 2 Settin...

Page 230: ...ng can also be performed via the PC configuration software Below relevant Monitoring mode mode 1 and Field setting mode mode 2 settings are explained in detail Making settings is done via the master o...

Page 231: ...consumption limitation The second method is to enable power consumption limitation based on an external input For this operation an optional accessory is required 1 5 shows the current Te target param...

Page 232: ...F 1 54 shows the current heat exchanger gas lower thermistor value F 1 55 shows the current deicer right thermistor value F 1 56 shows the compressor run time hour divided by 100 1 57 shows the curre...

Page 233: ...F 7 C 44 6 F 8 C 46 4 F 9 C 48 2 F 10 C 50 0 F 11 C 51 8 F 0 2 3 4 5 6 7 9 Tc setting Used to make setting of targeted condensing temperature for heating operation 2 0 9 Auto 41 C 105 8 F 43 C 109 4...

Page 234: ...B 2 2 8 OFF ON 10 Hz 0 1 29 Intermittent fan operation Used for intermittent fan operation setting 2 2 9 OFF 30 minutes OFF 1 minute ON with medium fan speed 30 minutes OFF 1 minute ON with high fan s...

Page 235: ...Returned when Ta 32 5 C 90 5 F 6 Limited in cooling when Ta 23 5 C 74 3 F Returned when Ta 26 5 C 79 7 F 7 Limited in cooling when Ta 19 3 C 66 7 F Returned when Ta 22 3 C 72 1 F 8 35 Outdoor 40 m 130...

Page 236: ...trol Tc fix control Te Tc fix control 0 1 2 3 71 Branch selector switching time Used for changing branch selector switching time All piping length between branch selector unit and indoor units should...

Page 237: ...d 1 1 1 1 1 1 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 98 Auxiliary heater maximum allowable temperature release differential Auxiliary heater is not allowed to energize when the outdoor air temperature is rec...

Page 238: ...ation when outdoor units are connected in multiple system combination Change 2 0 to 0 1 or 2 in function of required functionality 2 2 Low noise demand address Address for low noise demand operation 1...

Page 239: ...ration Default value 2 Value 2 8 Tc target 0 Auto 6 17 C 42 8 62 6 F 2 default 6 C 42 8 F 3 7 C 44 6 F 4 8 C 46 4 F 5 9 C 48 2 F 6 10 C 50 0 F 7 11 C 51 8 F Change 2 8 to 0 2 7 in function of required...

Page 240: ...ncrease the static pressure the outdoor fan is delivering this setting should be activated For details about this setting see technical specifications Default value 0 To activate this function change...

Page 241: ...emperature If the outdoor temperature is outside the above range or the indoor temperature is outside the above range even after cooling or heating the error code E 2 or E 3 is displayed and the funct...

Page 242: ...oments for this function are defined under setting 2 26 and 2 27 Default value 0 Change 2 22 to 1 2 or 3 in function of required level 2 25 Night time low noise operation level via the external contro...

Page 243: ...lt on the inverter checker module All 3 phases and neutral are available and Inverter PCB control is active Check if the green LED HAP on the inverter PCBs are blinking normal approx 1 second If LEDs...

Page 244: ...AAYD 460 V unbalance maximum 2 Check 2 DC voltage at connector X3A increases to 260 VDC for REYQ72AATJ at connector X3A and X4A increases to 260 VDC for REYQ96 240AATJ at connector X3A increases to 60...

Page 245: ...tem needs to run under power consumption limitation conditions when an external signal is sent to the unit this setting defines the level power consumption limitation that will be applied for step 1 T...

Page 246: ...de fan speed is limited to L tap when indoor units capacity 130 2 Fan speed follows the setting of remote controllers not limited by indoor units connection capacity 3 Limited in cooling when Ta 29 5...

Page 247: ...2 is disabled permanently Set 3 Sub module is disabled permanently 2 42 Outdoor fan noise countermeasure Change fans rotational speed and reduce noise by the interference of air blow noise between ou...

Page 248: ...in a multi are set manually to same status U7 error will appear 1 forced Master F1F2 Ind terminals should be connected to indoor units 2 forced Sub only Q1Q2 terminals should be wired to Master modul...

Page 249: ...90 Indoor unit without power U4 error generation In case an indoor unit needs maintenance or repair on the electric side it is possible to keep the rest of the VRV DX indoor units operating without p...

Page 250: ...is recommended to keep this setting to 0 or 1 2 92 Te target temperature upper limit Default value 1 Value 2 92 Te target temperature upper limit 0 L 1 default M 2 H If Auto Te then use this setting t...

Page 251: ...um allowable temperature Auxiliary heater is allowed to energize when the ambient temperature is smaller than the auxiliary heater maximum allowable temperature Auxiliary heater maximum allowable temp...

Page 252: ...6 Auxiliary heater 0 default OFF 1 ON 2 37 Auxiliary heater setting Type II Value 2 37 Controlling mode 0 default OFF 1 Mode 1 2 Mode 2 3 Mode 3 4 Mode 4 5 Mode 5 6 Mode 6 Type Description Actions Fie...

Page 253: ...e is smaller than the Heat Pump Lockout Temperature below this setting is only affective when heat pump lockout mode has been set Unit will switch to heat pump lockout Heat pump lockout temperature Fa...

Page 254: ...ing alarm EA Box air thermistor abnormality H1 Harness abnormality between outdoor unit main PCB and inverter PCB H3 Outdoor fan PCB abnormality H7 Outdoor air thermistor abnormality H9 Discharge pipe...

Page 255: ...S1 A1P ON OFF 1 2 3 4 F1 F2 F1 F2 F1 F2 IN D OUT D BS F1 F2 F1 F2 OUT D BS Cooling Only 1st unit Final unit Final Branch Selector unit In case of the indoor unit connect as the cooling only unit it wi...

Page 256: ...evel for the item 2 25 B When night time low noise operation is carried out automatically External control adaptor for outdoor unit is not required 1 While in setting mode 2 select a night time low no...

Page 257: ...PM 12 00 AM 7 00 AM 8 00 AM Set with night time low noise operation end setting Factory setting is 8 00 AM Set with night time low noise operation start setting Factory setting is 10 00 PM Operation s...

Page 258: ...When the Normal demand operation is carried out Use of the external control adaptor for outdoor unit is not required 1 While in setting mode 2 set the item 2 32 Setting of alternate demand to ON 2 Wh...

Page 259: ...t with Demand 1 level setting When 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...

Page 260: ...operation are displayed 2 Setting mode 2 H1P ON 1 In setting 1 press and hold the MODE BS1 button for more than 5 seconds Setting mode 2 is entered and H1P lights 2 Press the SET BS2 button several t...

Page 261: ...emperature to match the required load which is also related to the outdoor air conditions E g when your system is operating in cooling you do not need as much cooling under low outdoor air temperature...

Page 262: ...e in order to achieve the required room temperature very fast The overshoot is allowed from the start up moment In case of cooling operation the evaporating temperature is allowed to go down to 43 F 6...

Page 263: ...ting under cooling operation change field setting 2 81 to 0 To activate the eco comfort setting under heating operation change field setting 2 82 to 0 No matter which control is selected variations on...

Page 264: ...own below before turning on the power to the Branch Selector unit This setting is enabled when the Branch Selector unit power is turned on Be sure to make the setting before turning on the power Alway...

Page 265: ...l box cover Setting 1 Setting for branch ports to which no indoor unit is connected ON OFF ON OFF 1 A1P A3P 2 3 4 1 2 DS1 DS2 3 4 A B C D I J K L A B C D I J K L Branch port number Terminal No to whic...

Page 266: ...et the DIP switches DS1 DS2 for the corresponding branch ports based on the following table 3 Once work is complete be sure to close the control box cover BSF4Q54TVJ Setting Setting when joining branc...

Page 267: ...agram attached to the control box cover Note Setting Setting for branch ports to which no indoor unit is connected Example 1 Example 1 When not connecting the indoor unit to the A and B branch ports O...

Page 268: ...tor unit 5 Turn ON the DIP switch of DS1 corresponding to the system to be checked For example when checking the system C Turn ON DS1 3 on A1P 6 If the relevant indoor fan is on it is OK If another in...

Page 269: ...nts Cautions or warnings Are all units securely installed Dangerous for turning over during storm Possible damage to pipe connections Is the ground wire installed according to the applicable local sta...

Page 270: ...d if the compressor is running at this time After that the gas furnace will run in tens of seconds Tens of minutes might well be needed to stop compressor if the outdoor unit is particular operation 7...

Page 271: ...tor 302 3 10 Blower Motor Not Running 303 3 11 Indoor Fan Motor Status Abnormality 304 3 12 Low Indoor Airflow 305 3 13 Swing Flap Motor Abnormality 306 3 14 Power Supply Voltage Abnormality 308 3 15...

Page 272: ...7 3 51 High Pressure Sensor Abnormality 368 3 52 Low Pressure Sensor Abnormality 369 3 53 Inverter PCB Abnormality 370 3 54 Momentary Power Failure during Test Operation 372 3 55 Inverter Radiation Fi...

Page 273: ...pletes 422 3 80 Climate Talk Communication System Combination Error After Initial Setting for Communication Completes 423 4 Check 424 4 1 High Pressure Check 424 4 2 Low Pressure Check 425 4 3 Superhe...

Page 274: ...ditioning load IN COOLING Too many heat sources e g OA equipment located in a room IN DRYING The reason is that the dry operation serves not to reduce the room temperature where possible Change the sy...

Page 275: ...setting button makes no changes in the airflow rate In heating operation when the room temperature reaches the set degree the outdoor unit will stop while the indoor unit is brought to fan LL operati...

Page 276: ...welling Normal operation Outdoor unit Pitch of operating sounds changes The reason is that the compressor changes the operating frequency Normal operation 12 Dust comes out from the system Dust comes...

Page 277: ...operation while the compressor is during operation or under stop control or right after defrost IN or defrost OUT Wait until the operation becomes stable 2 Operation does not switch from heat pump to...

Page 278: ...P0 P3 8 When using airflow block the airflow block will be routinely lifted become horizontal during heating operation No defect Set louver to horizontal P0 during thermostat OFF 9 The infrared presen...

Page 279: ...2 Taking corrective action Operation Status Display Abnormal shutdown The system stops operating The operation lamp green starts to blink The message Error Push Menu button will blink at the bottom of...

Page 280: ...of the remote controller starts to beep 3 short beeps Follow all steps below 1 short beep Follow steps 3 and 4 Continue the operation in step 4 until you hear a continuous beep This continuous beep in...

Page 281: ...oller automatically returns to the normal mode O0 A C E H F J L P U 9 8 7 6 5 4 UP button DOWN button 0 1 2 3 4 5 6 7 8 9 A H C J E F UP button DOWN button If no button is pressed for 1 minute equipme...

Page 282: ...exchanger liquid pipe thermistor abnormality 329 C5 l Indoor heat exchanger gas pipe thermistor abnormality 329 C6 l Combination error between indoor unit control PCB and fan PCB 330 Blower motor HP m...

Page 283: ...pressor overcurrent 378 L9 l Compressor startup abnormality 380 LC l Transmission error between inverter PCB and outdoor unit main PCB 382 P1 l Power supply voltage imbalance 384 P4 1 l Inverter radia...

Page 284: ...ctions of the connector X12A on the panel PCB and the connectors X18A and X19A on the sensor PCB AH 05 Dust collection sign error when the self cleaning decoration panel is mounted Check for clogging...

Page 285: ...owchart and make a diagnosis of the relevant unit based on the Error code shown to the left E1 02 Defective outdoor unit PCB E1 08 Outdoor unit sub PCB error Master E1 09 Outdoor unit sub PCB error Su...

Page 286: ...vant unit based on the Error code shown to the left E9 03 Electronic expansion valve coil Y2E error Master E9 04 Electronic expansion valve coil Y3E error Master E9 05 Electronic expansion valve coil...

Page 287: ...gh temperature error Sub F3 20 Compressor M1C overheat error Master F3 21 Compressor M1C overheat error Sub F3 25 Compressor M2C overheat error Master F3 26 Compressor M2C overheat error Sub F4 01 Wet...

Page 288: ...5T Short Sub In case of REYQ72 type R17T J3 24 Defective M2C discharge pipe thermistor R17T Open Sub J3 25 Defective M2C discharge pipe thermistor R17T Short Sub J3 38 Defective M2C compressor body th...

Page 289: ...r left gas pipe thermistor R21T Sub J6 33 Error detection of heat exchanger left gas pipe thermistor R21T Master J6 34 Error detection of heat exchanger left gas pipe thermistor R21T Sub J7 01 Defecti...

Page 290: ...ensor S1NPL Open Sub JC 09 Defective low pressure sensor S1NPL Short Sub L1 01 IPM error Compressor M1C Master Refer to the L1 flowchart and make a diagnosis of the relevant unit based on the Error co...

Page 291: ...ssor M2C momentary overcurrent Master L5 15 Compressor M2C momentary overcurrent Sub L8 03 Compressor M1C overcurrent Master Refer to the L8 flowchart and make a diagnosis of the relevant unit based o...

Page 292: ...er supply Sub U1 06 Reverse phase open phase of power supply when power ON Sub U1 19 Power supply frequency issue Master U1 20 Power supply frequency issue Sub U2 01 Shortage of inverter 1 power suppl...

Page 293: ...adaptor for outdoor unit is installed U7 03 Transmission error between Master and Sub units U7 05 Multi system error U7 06 Error in address settings of Sub unit U7 07 Connection of four or more outdo...

Page 294: ...e LP sensor failure Tf sensor failure Tg sensor failure Four way valve coil failure Four way valve failure HP Refer to JA troubleshooting LP Refer to JC troubleshooting Tg Refer to J9 troubleshooting...

Page 295: ...to C9 troubleshooting Th2 Refer to C4 troubleshooting Th3 Refer to C5 troubleshooting LP Refer to JC troubleshooting If the above error is not seen the corresponding indoor electronic expansion valve...

Page 296: ...he above shall be the numbers which indicate indoor unit type for the tens digit and capacity index for the ones digit See Table 1 and 2 for detail Detail of error Type of error Product type code 1 Ou...

Page 297: ...digit Prediction code Prediction sub code AirNet address display flag Prediction code detail information Product type digit Prediction code Prediction sub code AirNet address display flag Product type...

Page 298: ...osed Causes Activation of external protection device Improper field setting Defective indoor unit control PCB Troubleshooting ON OFF input from outdoor mode No 12 first code No 1 has been set to exter...

Page 299: ...blown 24 VAC power is not supplied to TH2 and TR2 terminals FXTQ TA or R and C terminals CXTQ TA on the indoor unit PCB Troubleshooting Fuse F1U is blown 24 VAC power is supplied to TH2 and TR2 termin...

Page 300: ...nvolatile memory Maintains memory contents even when the power supply is turned OFF Supposed Causes Defective indoor unit control PCB External factor Noise etc Troubleshooting Turn the power supply OF...

Page 301: ...disconnecting connectors or parts may be damaged Replace the float switch S1L Modify the float switch s connection and turn ON again Connect the drain pump and turn ON again Connect either a short ci...

Page 302: ...it The voltage of drain pump terminals 2 is in accordance to the criteria 3 within 5 minutes of resetting the power supply A Model 1 Float switch S1L short circuit connector 2 Drain pump M1P connector...

Page 303: ...n wires in short circuit of or disconnection of connectors from the fan motor harness Defective fan motor Broken wires or defective insulation Abnormal signal output from the fan motor defective circu...

Page 304: ...pins more than the judgment criteria Disconnect the connector from the fan motor and then make measurement of resistance between pins Turn OFF the power supply and then wait for a period of 10 minute...

Page 305: ...to the fan Supposed Causes Defective indoor fan motor Broken wires Defective contact Troubleshooting CHECK 16 Refer to page 440 NO YES YES Is the X4A connector securely connected NO Is the power of 12...

Page 306: ...in operation Error from the position signal of the fan motor Error from the current flow on the fan PCB when the fan motor starting operation Error Decision Conditions An overcurrent flows The rotatio...

Page 307: ...eplace the indoor fan motor M1F YES NO YES The fan can be moved lightly by hand after the fan motor connector of the fan PCB A2P is removed Replace the indoor fan motor M1F NO YES NO YES There is a fo...

Page 308: ...ween GND and Hw Hv or Hu terminals are short circuited Replace the indoor fan motor M1F YES Replace the fan PCB A2P YES NO The resistance among U V and W are unbalanced or short circuited NO The HAP l...

Page 309: ...Supposed Causes Defective power supply for the indoor fan motor Clogged drain piping Activation of the indoor unit safety device Defective contact in the fan wiring circuit Troubleshooting Properly co...

Page 310: ...5 second intervals using the feedback of the fan motor Performs rotation sampling 720 times takes approximately one hour and if the rotation speed falls below 50 rpm over 100 times it is deemed abnorm...

Page 311: ...e information shows Motor Lost Control or Current Trip status it will be deemed a MOTOR TRIP abnormal operation The system stops operating Error Reset Conditions If the indoor unit stops receiving abn...

Page 312: ...s If during this the rotation command is stopped the 5 second interval check is halted but the counted number will be kept When the rotation command is restarted the checks will resume Error Reset Con...

Page 313: ...ipped with a swing flap function The swing motor works when the power supply is turned OFF and then restart The relay cable is short circuited or disconnected Caution Be sure to turn off the power swi...

Page 314: ...1S FXAQ P X36A M1S Replace the power supply relay cable Replace the defective swing motor 2 Take the flap cam mechanism apart reassemble and turn ON again YES NO YES NO The relay cable has no continui...

Page 315: ...nal line Defective wiring Instantaneous power failure others Troubleshooting Check the condition of the power supply 1 Check if power supply voltage is 208 230 V 10 2 Check if there is power open phas...

Page 316: ...abnormality Error Decision Conditions If the information shows Over Under Voltage status it will be deemed a MOTOR VOLTS abnormal operation Error Reset Conditions Reset by remote controller Supposed C...

Page 317: ...ture of liquid pipe of heat exchanger Supposed Causes Defective electronic expansion valve coil Defective indoor unit control PCB Defective relay cables Troubleshooting CHECK 18 Refer to page 444 NO Y...

Page 318: ...h error code of the gas furnace Refer to the gas furnace manual for details Troubleshooting 1 In some cases of gas furnace abnormality regarding gas combustion once an error occurs display indication...

Page 319: ...to OFF while the compressor is not in operation Error code is displayed but the system operates continuously Supposed Causes Humidifier unit optional accessory leaking Defective drain pipe upward slo...

Page 320: ...receiving side is short circuited The total of fan operation time exceeds a specified value after dust collection sign display Limit switch does not detect when air filter rotates or air filter does...

Page 321: ...the dust box NO NO Go to Diagnosis Flowchart 4 Air filter rotation error AH 06 Is the rotation of air filter normal YES NO Go to Diagnosis Flowchart 5 Damper rotation error AH 07 Does the damper open...

Page 322: ...AH 03 Transmission error between self cleaning decoration panel and indoor unit Diagnosis Flowchart 1 NO Properly connect the connector Is the connector X1A on the self cleaning decoration panel PCB...

Page 323: ...eaning decoration panel PCB AH 04 Dust detection sensor error Diagnosis Flowchart 2 NO Properly connect the connector Is the connector X12A on the self cleaning decoration panel PCB properly connected...

Page 324: ...lace the harness YES Remove the external factor Is there any external factor other than the error such as noise NO Turn OFF the power supply and then turn it ON again Then start operation with remote...

Page 325: ...atter Is there any foreign matter in the filter drive motor or drive parts NO YES Replace the air filter Is the filter damaged NO YES Replace the filter drive gear Is the filter drive gear damaged NO...

Page 326: ...test operation refer to the operation manual of the self cleaning decoration panel YES NO Normal Error AH recurs or the self cleaning decoration panel lamp red blinks The error could be caused by othe...

Page 327: ...the foreign matter Is there any foreign matter in the damper drive motor or drive parts NO YES Replace the damper or damper drive gear Is the damper or damper drive gear damaged NO A Go to the next p...

Page 328: ...test operation refer to the operation manual of the self cleaning decoration panel YES NO Normal Error AH recurs or the self cleaning decoration panel lamp red blinks The error could be caused by othe...

Page 329: ...d AH 08 Filter auto clean operation error Diagnosis Flowchart 6 NO YES Remove the external factor Is there any external factor other than the error such as noise Turn OFF the power supply and then tur...

Page 330: ...Stop the air conditioning operation and perform filter auto clean operation 1 Please set a time period during which air conditioning operation is stopped for about 20 minutes every day Has any air co...

Page 331: ...he capacity code is not saved to the PCB and the capacity setting adaptor is not connected When a capacity that does not exist for that unit is set Supposed Causes The capacity setting adaptor was not...

Page 332: ...etection Transmission conditions between the indoor unit control PCB A1P and fan PCB A2P are checked via microcomputer Error Decision Conditions When normal transmission is not carried out for a certa...

Page 333: ...and connect X70A back to original condition Under above field setting mode second code No is 01 NO NO YES Replace the fan PCB A2P YES YES Is the connector between indoor unit control PCB A1P and fan P...

Page 334: ...rmal message and determined as such by the indoor unit the indoor unit will execute a retry If everything fails for 5 seconds it is deemed to be a transmission abnormality Error Reset Conditions If th...

Page 335: ...posed Causes Disconnection of the communication wire between the CXTQ TA and the gas furnace Power supply to the gas furnace is cut Troubleshooting NO Caution Be sure to turn off the power switch befo...

Page 336: ...333 for C9 for FXTQ TA and CXTQ TA models CHECK 11 Refer to page 434 Is the thermistor normal Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may b...

Page 337: ...ection of capacity setting adaptor Field setting error Troubleshooting NO Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Was indoor...

Page 338: ...rmation on the manufacturer ID and output of the fan motor when initializing the fan motor If those figures are not the values recognized by the indoor unit it will be deemed abnormal operation If dee...

Page 339: ...e included among the periodic control status information Error is issued when the information shows abnormality Error Decision Conditions If the parameter information shows abnormality it will be deem...

Page 340: ...Troubleshooting 1 Connector and indoor unit control PCB CHECK 11 Refer to page 434 Is the optional remote sensor is installed Field setting 10 20 2 is set to 03 Connector is connected to the indoor u...

Page 341: ...y be damaged YES NO Is CC displayed on the remote controller 2 YES NO Does it function normally Remove the humidity sensor from the indoor unit control PCB and insert it again Normal Poor connector co...

Page 342: ...red presence sensor connector CE 01 Defective infrared floor sensor Temperature compensation circuit disconnection CE 02 Defective infrared floor sensor Temperature compensation short circuit CE 03 De...

Page 343: ...nnect the connector correctly Connect the connector correctly NO YES YES Is the connection of the connector on infrared presence sensor PCB and the connector 1 normal NO YES YES Is the connection of t...

Page 344: ...nnect the connector correctly Connect the connector correctly NO YES YES Is the connection of the connector on infrared floor sensor PCB and the connector 1 normal NO YES YES Is the connection of the...

Page 345: ...or and address data No 26 Is the connection of the sensor connector normal Displays by the above verification method Displays CE 03 again or for sensor and address data Replace the sensor Connect the...

Page 346: ...or and address data No 26 Is the connection of the sensor connector normal Displays by the above verification method Displays CE 04 again or for sensor and address data Replace the sensor Connect the...

Page 347: ...roubleshooting 1 How to delete the history of error codes Press the ON OFF button for 4 seconds and more while the error code is displayed in the inspection mode Clear the error code history 1 While i...

Page 348: ...mal Supposed Causes Defective outdoor unit main PCB A1P Defective outdoor unit sub PCB A8P Defective connection communication line between indoor and outdoor units Troubleshooting Return to normal YES...

Page 349: ...oting YES NO NO Is wiring passing through the current sensor T1A proper Insulation failure of compressor Insulation failure of component except compressor Pass proper wiring through the sensor Turn OF...

Page 350: ...connector X101A Wiring disconnection Defective outdoor unit main PCB Troubleshooting NO YES YES Is the system reset to normal Is X101A connected The error is considered to have resulted from external...

Page 351: ...nit main PCB A1P Momentary power failure Defective high pressure sensor Troubleshooting NO YES YES Replace the high pressure switch S1PH S2PH Remedy defective points YES Are the above 3 points OK Does...

Page 352: ...ctors that cause the high pressure to rise Connect the service checker and then compare the high pressure value measured by the service checker with the voltage measurement of the connector of the pre...

Page 353: ...and then restart the operation Is the stop valve open Open the stop valve Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Replace th...

Page 354: ...ifferential pressure 0 5 MPa 72 5 psi or more UVW connection error Defective inverter PCB Stop valve is not opened Troubleshooting Make proper wire connections Make proper wire connections NO NO NO NO...

Page 355: ...lure Check for the refrigerant system Quit work Pressure equalization failure may have occurred Check for the refrigerant system YES YES NO Replace the inverter PCB NO The error recurs at startup Cont...

Page 356: ...ystem will return an alarm if there is any operational unit other than that applicable to E6 or determine to be error if not Supposed Causes Defective compressor Defective high pressure sensor Defecti...

Page 357: ...29 CHECK 12 Refer to page 437 NO YES Are the high pressure and ow pressure checked by the service checker the same as the actual measured values of the high and low pressure sensors Replace the outdoo...

Page 358: ...ting There are foreign matter around the applicable fan Remove the foreign matter YES Check for the connections of all fan motor connectors NO Turn OFF the power supply and then wait for a period of 1...

Page 359: ...llic part is less than 1 M Replace the relevant fan motor M1F M2F YES NO YES Resistance between U V W phases of the fan motor power supply cable has lost balance or short circuit is caused between U V...

Page 360: ...ce and then turn it ON again Return to normal Investigate external causes other than failures e g noise YES NO Connector for the electronic expansion valve of the outdoor unit is connected Properly an...

Page 361: ...or harness of four way valve Defective four way valve Troubleshooting Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts may be damaged Is the four wa...

Page 362: ...Conditions When the evaporator is in a condenser like refrigerant state When the condenser is in an evaporator like refrigerant state Supposed Causes Defective high pressure sensor Defective low pres...

Page 363: ...the four way valve fixed correctly Firmly fix the coil NO YES Is the harness of the four way valve broken Replace the relevant coil and harness YES NO Are the high and low pressure sensors normal Rep...

Page 364: ...ing during cooling operation in the indoor unit When the flow direction of the refrigerant is cooling during heating operation in the indoor unit Supposed Causes Wrong wiring between Branch selector u...

Page 365: ...abnormally high i e 135 C 275 F or more When discharge pipe temperature sharply rises remains at 120 C 248 F or more for a period of consecutive 10 minutes When compressor surface temperature becomes...

Page 366: ...ssor surface temperature thermistors normal All thermistors are normal and temperature detection with the outdoor unit main PCB is also normal The discharge pipe temperature or compressor surface temp...

Page 367: ...art Error Decision Conditions When the following wet state continues for a period of 90 minutes an alert is issued An error is defined for 120 minutes Wet state in outdoor units When the following wet...

Page 368: ...O YES NO Replace the indoor unit electronic expansion valve Replace the relevant thermistor YES YES Caution Be sure to turn off the power switch before connecting or disconnecting connectors or parts...

Page 369: ...uses Refrigerant overcharged Disconnection of outdoor air thermistor Disconnection of heat exchanger deicer thermistor Disconnection of liquid pipe temperature thermistor Troubleshooting CHECK 11 Refe...

Page 370: ...ive PCB of Branch Selector unit Troubleshooting While in monitor mode identify an electronic expansion valve subject to the Error Code F9 1 Identify the electronic expansion valve coil to be checked b...

Page 371: ...ECK 18 Refer to page 444 Electronic expansion valve Sub code Electronic expansion valve EVH 01 Electronic expansion valve EVL 02 Electronic expansion valve EVSC 05 Model Electronic expansion valve to...

Page 372: ...rcuit in it Supposed Causes Defective connection of thermistor Defective thermistor Defective outdoor unit PCB Troubleshooting 1 Check the error code and sub code and replace the corresponding thermis...

Page 373: ...the PCBs is disabled while the compressor is not running Supposed Causes Defective connection of jumpers between PCB Defective outdoor unit main PCB A1P Defective inverter PCB Troubleshooting Check fo...

Page 374: ...r NO YES Replace the relevant fan motor M1F M2F NO YES Check for fan PCB applicable to the error code H7 while in monitor mode H7 21 23 Fan PCB M1F Master Sub H7 22 24 Fan PCB M2F Master Sub Replace t...

Page 375: ...K 12 Refer to page 437 Are the characteristics of the high pressure sensor normal Make a comparison between voltage characteristics and gauge pressure Replace the high pressure sensor S1NPH Replace th...

Page 376: ...2 Refer to page 437 Check 12 Are the characteristics of the low pressure sensor normal Make a comparison between voltage characteristics and gauge pressure Replace the low pressure sensor S1NPL Replac...

Page 377: ...value during the output of waveform before compressor startup Detect current value with the current sensor during synchronous operation for startup Error Decision Conditions When the overcurrent flow...

Page 378: ...ssor 100 k or more The error could have resulted from external factors other than failures e g external noise or thunder YES Replace the compressor and the inverter PCB together Replace the inverter P...

Page 379: ...cy detection circuit on the outdoor unit main PCB Supposed Causes Defective wiring Defective outdoor unit main PCB Troubleshooting Error recurs after turning OFF the power and ON again Any disconnecti...

Page 380: ...Code L4 Sub code 01 02 09 10 Method of Error Detection Detect temperature of power module of the inverter PCB Error Decision Conditions Thermistor located inside the power module of the inverter PCB f...

Page 381: ...ower supply voltage falls within 10 of the rated voltage Replace the inverter PCB Connect to power supply within 10 of the rated voltage NO YES Rectify troubles Normal Power OFF NO NO Check for the co...

Page 382: ...in plate not fixed with screws U0 error Defective fan PCB High outdoor air temperature Troubleshooting Continue operation Field factor Radiation fin temperature may have risen due to high outdoor air...

Page 383: ...ive inverter PCB Troubleshooting Power OFF Open the stop valve YES NO Is the stop valve open YES YES Are wiring and wire connections to the relevant compressor normal Rectify the wiring and wire conne...

Page 384: ...er OFF YES Restarting the system results in the recurrence of the error Continue operation Replace the compressor NO YES Replace the inverter PCB YES Restarting the system results in the recurrence of...

Page 385: ...voltage Troubleshooting Power OFF Open the stop valve YES NO Is the stop valve open YES YES Are wiring and wire connections to the relevant compressor normal Rectify the wiring and wire connections NO...

Page 386: ...compressor restart is below 0 2 MPa Continue operation Replace the compressor Connect to power supply within 10 of the rated voltage NO NO Pressure equalization failure Check the refrigerant system Po...

Page 387: ...oting YES NO NO Apply power and then restart operation NO Are the leads of the compressor disconnected Connect the leads of the compressor YES Is the insulation resistance of the relevant compressor 1...

Page 388: ...rant system NO Replace the inverter PCB NO YES NO The internal wiring of the compressor coil is defective Replace the compressor YES Is the insulation resistance of the relevant compressor 100 k or mo...

Page 389: ...ve outdoor unit main PCB transmission block Defective noise filter compressor or fan motor External factors e g noise Failure of inverter PCB or fan PCB Troubleshooting Does the inverter PCB part No m...

Page 390: ...Replace the inverter PCB NO NO YES The microcomputer normal monitor indication lamp green on the outdoor unit main PCB A1P is blinking Properly connect the connector NO YES Is the connector between th...

Page 391: ...ance through inverter PCB Error Decision Conditions When power supply voltage imbalance exceeds approximately 12 V Error is not decided while the unit operation is continued P1 will be displayed by pr...

Page 392: ...ion Results attached to spare part Hand the Notice of Inspection Results to user to ask him her to rectify the imbalance Be sure to explain user that power supply voltage imbalance will occur and Daik...

Page 393: ...unit operation is continued P4 will be displayed by pressing the inspection button Supposed Causes Defective radiation fin temperature thermistor Defective inverter PCB Defective compressor Defective...

Page 394: ...nce of the thermistor comes to a value equivalent to open or short circuit Supposed Causes Defective fan PCB Defective fan motor Troubleshooting The insulation resistance of the relevant fan motor is...

Page 395: ...ield setting after replacing outdoor unit main PCB Troubleshooting Does the inverter PCB part No match that of the spare parts list Does the fan PCB part No match that of the spare parts list Has the...

Page 396: ...to page 425 CHECK 12 Refer to page 437 Is the low pressure 0 1 MPa 14 5 psi or less 1 Is the characteristics of low pressure sensor normal 2 Replace the low pressure sensor S1NPL Replace the outdoor u...

Page 397: ...open phase Defective outdoor unit main PCB A1P Power supply frequency issue Troubleshooting There is an open phase at the power supply T phase terminal section X1M of the outdoor unit Operation is nor...

Page 398: ...phase Defective inverter PCB Defective outdoor unit main PCB Defective compressor Defective main circuit wiring Defective fan motor Defective connection of signal cable Troubleshooting There are some...

Page 399: ...lace the inverter PCB If the inverter PCB gets severely damaged the compressor and the fan motor M1F M2F may have been damaged Replace the inverter PCB If the inverter PCB gets severely damaged check...

Page 400: ...b code and then go to the following Conduct the test operation The test operation has not been conducted U3 03 Check for the refrigerant piping and then conduct the test operation U3 04 Conduct the te...

Page 401: ...icrocomputer checks if transmission between indoor and outdoor units is normal Error Decision Conditions Transmission is not carried out normally for a certain amount of time Supposed Causes Open phas...

Page 402: ...14 1 OFF ON BLINK SEG1 SEG2 SEG3 1 2 Correct the voltage Replace the fuse Press and hold the RETURN BS3 button on the outdoor unit main PCB for a period of 5 seconds or more YES NO YES YES Replace the...

Page 403: ...ve PCB 2 Test operation was interrupted by the MODE BS1 button YES Check all indoor error indication NO Operate all indoor units YES Do all units display U9 Carry out the diagnosis again after a lapse...

Page 404: ...Main Sub setting Control by 2 remote controllers Main Sub setting of both remote controllers is set to Main All indoor unit control PCB microcomputer normal monitors blinking Resets normally when powe...

Page 405: ...nditions When transmission is not carried out normally for a certain amount of time Supposed Causes Connection error of transmission wirings between outdoor unit and external control adaptor for outdo...

Page 406: ...2 Transmission error when the external control adaptor is mounted Error code Sub code Error code Sub code Error code Sub code Error code Sub code Error code Sub code Error code Sub code Error code Su...

Page 407: ...tdoor unit Diagnosis Flowchart 1 Supply power to the outdoor unit Is power supplied to the outdoor unit Is the normal operation monitor LED on the outdoor unit main PCB blinking Is the normal operatio...

Page 408: ...he error recur when setting Cool Heat selection for the external control adaptor for outdoor unit to IND NO NO NO NO NO NO NO NO YES YES YES YES YES YES YES YES Replace the outdoor unit main PCB A1P R...

Page 409: ...and Sub units Error code Sub code U7 03 Disconnect the outdoor unit multi transmission wirings and then reset the power supply Replace the outdoor unit main PCB A1P YES NO Diagnosis Flowchart 4 Multi...

Page 410: ...rings and then reset the power supply Replace the outdoor unit main PCB A1P Replace the outdoor unit main PCB A1P Rectify the error in the connection of transmission wirings and then reset the power s...

Page 411: ...ror between main and sub remote controller Connection between sub remote controllers Defective remote controller PCB Troubleshooting Refer to page 106 for Main Sub setting Main Sub setting of both rem...

Page 412: ...nits Defective electronic expansion valve of other indoor unit Defective indoor unit control PCB of other indoor unit Improper connection of transmission wiring between indoor and outdoor unit Multi t...

Page 413: ...ween indoor Branch Selector and outdoor units The number of indoor units is out of the allowable range Signal transmission between indoor Branch Selector and outdoor units is abnormal Error Decision C...

Page 414: ...A 27 Go to Diagnosis Flowchart 8 Connection of incorrect Branch Selector unit Error code Sub code UA 28 Go to Diagnosis Flowchart 10 DIP switch setting error of Multi Branch Selector unit Error code S...

Page 415: ...A1P Refer to Incorrect electric heater capacity setting troubleshooting 1 Excess indoor units are connected Check for the connection to connect the proper number of indoor units NO Diagnosis Flowchar...

Page 416: ...pare PCB made Diagnosis Flowchart 4 NO Correct the wirings If no defect is found in the wirings replace the outdoor unit main PCB A1P YES NO YES NO YES Error in the system design Replace with a single...

Page 417: ...P NO Correct the wiring Diagnosis Flowchart 5 Is the wiring between outdoor unit and Branch Selector unit correct Error code Sub code UA 25 YES Replace the relevant Branch Selector unit PCB NO Correct...

Page 418: ...NO Replace the indoor unit PCB or the Branch Selector unit PCB Is the Branch Selector unit PCB correct Error code Sub code UA 27 YES Replace the outdoor unit main PCB A1P NO Connect the correct model...

Page 419: ...he RETURN BS3 button of the outdoor unit main PCB A1P for 5 seconds or more If the error is not cleared after 30 minutes have elapsed replace the Multi Branch Selector unit PCB NO After turning OFF th...

Page 420: ...rnace and other indoor units other than CXTQ TA are connected Error Decision Conditions Check that two or more CXTQ TA gas furnace and other indoor units other than CXTQ TA are not connected Operation...

Page 421: ...on applicable value Operation After Error Codes Decided The error code UA 17 is displayed on the remote controller Indoor units can operate continuously Incorrect setting is kept Even if the ON condit...

Page 422: ...that of its own on any other indoor unit Error Decision Conditions The error decision is made as soon as the abnormality aforementioned is detected Supposed Causes Address duplication of centralized...

Page 423: ...rocomputer checks if transmission between indoor unit and centralized controller is normal Error Decision Conditions When transmission is not carried out normally for a certain amount of time Supposed...

Page 424: ...No for indoor unit changed Make correct setting of the central control group No Check outdoor units to which the refrigerant system is connected Check whether or not there are no problems with the tra...

Page 425: ...e Replace the centralized controller Centralized controller Normal OK Correct the wiring NG A NO Correct the wiring NG YES YES Disconnect the transmission wiring of the main centralized controller and...

Page 426: ...ration Supposed Causes Improper connection of transmission wiring between indoor outdoor units and outdoor outdoor units Failure to execute check operation Defective indoor unit PCB Stop valve is not...

Page 427: ...ss function Automatic address refers to the automatic designated address of indoor unit and outdoor unit when connected to the power after installation or wiring replacement with the RETURN BS3 button...

Page 428: ...or units in the system NO After fixing the incorrect wiring press the RETURN BS3 button on the outdoor unit main PCB for 5 seconds The unit will not run for up to 12 minutes NO NO Install the DIII NET...

Page 429: ...f the gas furnace is turned ON after a certain period of time has been elapsed after the power of the CXTQ TA was turned ON Disconnection of the communication wire between the CXTQ TA and the gas furn...

Page 430: ...r communication with the gas furnace completes and after elapsing 4 minutes after the power is turned ON Two or more gas furnaces are detected Any unit other than the gas furnace is detected Supposed...

Page 431: ...ce Dirty filter Obstacle Excessiverefrigerantcharging Improper model selection In heating Check to be sure the stop valve is open Conduct visual checks for pipe conditions Is there any temperature dif...

Page 432: ...ty setting properly made Is the air filter clogged Is there any obstacle in the airflow passage Defective outdoor unit main PCB Including capacity setting High airflow passage resistance Dirty filter...

Page 433: ...SiUS372201EA Check Part 6 Service Diagnosis 426 Reference Reference CHECK 7 Refer to page 432 CHECK 8 Refer to page 433...

Page 434: ...the outdoor unit electronic expansion valve excessively throttled 3 Temperature increase of discharge pipe Defective injection electronic expansion valve Are the coil resistance and insulation normal...

Page 435: ...superheat operation 1 Suction gas superheating degree 10 C 18 F and over 2 Discharge gas superheating degree 45 C 81 F and over except immediately after compressor starts up or is running under dropp...

Page 436: ...or more make measurement of resistance No Measuring point When using the analog type of multimeter make measurement in resistance measurement mode in the x1 k range When using the digital type of mult...

Page 437: ...Service Diagnosis 430 REYQ72AATJ REYQ144 168AATJ M2C REYQ192 216 240AATJ M1C M2C REYQ AAYD 9 5 9 5 36 3 3 5 8 5 3 3 1 3 8 9 9 7 7 7 1 W V U P2 N32 230 V 160P 9 5 9 5 36 3 3 5 8 5 3 3 1 3 8 9 9 7 7 7 1...

Page 438: ...e Low pressure Frequency High pressure gradually rises with increase in frequency Subcooling degree becomes higher Liquid connection pipe temperature lowers Low pressure rises due to decreased compres...

Page 439: ...minimum level Fan control is activated for high pressure protection under cooling control at low outdoor air temperature i e the fan is hunting at high pressure High pressure drops with decrease in c...

Page 440: ...r less for a period of 1 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 hav...

Page 441: ...purge thermistor R5T Suction pipe before accumulator thermistor R6T Heat exchanger right upper liquid pipe thermistor R7T Heat exchanger right lower liquid pipe thermistor R8T Heat exchanger right dei...

Page 442: ...53 65 80 5 41 51 05 50 95 51 07 10 50 39 91 39 92 39 97 15 59 31 44 31 50 31 51 20 68 24 95 25 02 25 02 25 77 19 94 20 00 20 00 30 86 16 04 16 10 16 10 35 95 12 99 13 04 13 04 40 104 10 58 10 63 10 6...

Page 443: ...20 14 20 00 30 86 165 7 16 23 16 09 35 95 134 3 13 16 13 02 40 104 109 4 10 73 10 60 45 113 89 58 8 800 8 685 50 122 73 73 7 255 7 153 55 131 60 98 6 012 5 923 60 140 50 67 5 010 4 929 65 149 42 29 4...

Page 444: ...kg cm2 psi MPa PH PL PH MPa VH 0 5 PL MPa VL 0 5 PH High pressure MPa PL Low pressure MPa VH Output Voltage High Side VDC VL Output Voltage Low Side VDC 4 15 3 0 4 15 3 0 1 7 3 0 1 7 3 0 1 MPa 145 ps...

Page 445: ...t D between the outdoor outdoor unit terminal of the Outdoor Unit C in the order described thus identifying the place with continuity If the place with continuity can be identified there may be broken...

Page 446: ...r continuity If there is continuity the indoor outdoor unit transmission has no broken wires in it Indoor outdoor unit transmission wiring 2 Short circuit between the indoor outdoor unit terminal part...

Page 447: ...or or relay connector is disconnected FXSQ54TA FXSQ54TB FXMQ15 54PB FXMQ30 54TB Remove the X1A connector from the fan PCB A2P and measure the resistance between the U and V V and W and W and U phases...

Page 448: ...ly Measure the resistance between phases of U V W at the motor side connectors 3 core wire to check that the values are balanced and there is no short circuiting while connector or relay connector is...

Page 449: ...FXSQ05 48TA FXSQ05 48TB FXMQ07 12PB FXMQ15 24TB FXAQ P Judgment criteria FXEQ P FXUQ PA Judgment criteria White Orange Brown Blue Red 1 2 3 4 5 6 7 FG Vsp Vcc GND Vdc Measuring points Criteria 1 4 1 o...

Page 450: ...Part 6 Service Diagnosis FXSQ54TA FXSQ54TB FXMQ15 54PB FXMQ30 54TB Judgment criteria Gray 5 Pink 4 Orange 3 Blue 2 Yellow 1 GND Vcc Hw HV HU Measuring points Criteria 5 4 1 or more 5 3 1 or more 5 2 1...

Page 451: ...ed in the table below Determine the type according to the connector wire color and measure the resistance Outdoor Unit Y1E Y2E Y4E Y5E Y3E REYQ72AA Y3E Except REYQ72AA Y6E Y7E Y8E Measuring points Jud...

Page 452: ...M FXMQ M FXHQ M FXLQ M FXNQ M FXMQ MF Measuring points Judgment criteria 1 6 35 55 2 6 3 6 4 6 Measuring points Judgment criteria 1 3 300 1 5 150 2 4 300 2 6 150 Measuring points Judgment criteria 1...

Page 453: ...ellow Red Orange Red Blue Red Yellow Blue 2 4 White Red Orange 1 3 M White 1 Yellow 2 Orange 3 Blue 4 5 Red 6 White 1 Yellow 2 Orange 3 Blue 4 Red 5 Measuring points Judgment criteria White Red 120 18...

Page 454: ...or replace as needed 4 Check blower wheel Confirm wheel is properly seated on motor shaft Set screw must be on shaft flat and torqued to 165 in lbs minimum Confirm wheel has no broken or loose blades...

Page 455: ...ce motor control end bell verify motor refer to Motor Checks on page 450 9 Depress the orange power button to turn off motor 10 Disconnect power Disconnect diagnostic tool 11 Reconnect the 4 wire harn...

Page 456: ...to air handler or modular blower NOTE Motor contains capacitors that can hold a charge for several minutes after disconnecting power Wait 5 minutes after removing power to allow capacitors to discharg...

Page 457: ...or modular blower 1 Disconnect power to air handler or modular blower NOTE Motor contains capacitors that can hold a charge for several minutes after disconnecting power Wait 5 minutes after removing...

Page 458: ...2201EA 451 Part 7 Appendix 1 Wiring Diagrams 452 1 1 Outdoor Unit 452 1 2 Branch Selector Unit 454 1 3 Indoor Unit 463 1 4 Air Treatment Equipment 481 2 Electrical Component Box Removal 484 Part 7 App...

Page 459: ...SiUS372201EA Wiring Diagrams Part 7 Appendix 452 1 Wiring Diagrams 1 1 Outdoor Unit REYQ72 96 120 144 168 192 216 240AATJA C 2D130901F...

Page 460: ...Wiring Diagrams SiUS372201EA 453 Part 7 Appendix REYQ72 96 120 144 168 192 216 240AAYDA C 2D131905G...

Page 461: ...SiUS372201EA Wiring Diagrams Part 7 Appendix 454 1 2 Branch Selector Unit 1 2 1 Single Branch Selector Unit BSQ36 60 96TVJ 3D089521B...

Page 462: ...6 7 211 725 3725 25 08 7 7 1 17 0 6 0 1 7521 3 16 21 9 9 68 7 21 3 127 6 7 6 5 1 5 0 33 6 72 6 81 7 21 7 50 1 2 211 725 5 1 3527 7 9 5281 1 86 1 7 22 7 6 725 237 21 6625 211 7 7 72 7 50 1 6 1 21 0 6...

Page 463: ...SiUS372201EA Wiring Diagrams Part 7 Appendix 456 1 2 2 Multi Branch Selector Unit Standard Series BS4Q54TVJ 3D089123B...

Page 464: ...25 6 81 7 21 7 0 5 6 1 7 6 5 0 1 7 7 50 1 2 211 725 5 1 3527 7 9 5281 12 6 66 5281 6 25 5 1 25 7 7 50 1 2 0 0 23 5 7 21 5 5 72 7 167 7 21 0 18 77 72 7 81 7 7 725 6 77 1 2 3 6 7 6 6 6 6 6 2 2 6 25 6 7...

Page 465: ...SiUS372201EA Wiring Diagrams Part 7 Appendix 458 BS6 8Q54TVJ 2D089122B...

Page 466: ...Wiring Diagrams SiUS372201EA 459 Part 7 Appendix BS10 12Q54TVJ 2D089121B...

Page 467: ...21 9 5 0 31 127 6 4 7 9 127 6 0 0 0 51 0 0 6 81 7 12 6 7 5 3 3 0 127 3 3 25 7521 3 16 21 9 9 68 22 51 0 21 2 7521 3 16 21 9 9 3 3 6 7 0 7 50 1 2 32 5 6833 7521 3 16 21 9 9 68 7 21 7521 3 16 21 9 9 68...

Page 468: ...Wiring Diagrams SiUS372201EA 461 Part 7 Appendix 1 2 3 Multi Branch Selector Unit Flex Series BSF4Q54TVJ 3D123904A...

Page 469: ...SiUS372201EA Wiring Diagrams Part 7 Appendix 462 BSF6 8Q54TVJ 2D123905A...

Page 470: ...Wiring Diagrams SiUS372201EA 463 Part 7 Appendix 1 3 Indoor Unit FXFQ07 09 12 15 18 24 30 36 48TVJU 3D086460B...

Page 471: ...SiUS372201EA Wiring Diagrams Part 7 Appendix 464 BYCQ125BGW1 Self Cleaning Decoration Panel for FXFQ TVJU 3D076375A...

Page 472: ...Wiring Diagrams SiUS372201EA 465 Part 7 Appendix FXZQ05 07 09 12 15 18TAVJU 3D110443A...

Page 473: ...25 7 237 21 6625 3 3 1 75 160 66 21 5 1 127 175 5 027 21752 5 1387 520 2876 127 5 5 027 21752 5 237 21 6625 127 0 0 3 21752 2 06 0 7 5 25 8 51 1 127 6 7 50 1 2 211 725 5 1 3527 7 9 5281 6 5 1 6 86 1 1...

Page 474: ...NG CENTRAL REMOTE CONTROLLER CONNECT IT TO THE UNIT IN ACCORDANCE WITH THE ATTACHED INSTALLATION MANUAL 3 IN CASE OF MAIN SUB CHANGEOVER SEE THE INSTALLATION MANUAL ATTACHED TO REMOTE CONTROLLER 4 SYM...

Page 475: ...0 7 50 1 2 21752 5 6 1 03 55 7 25 5 7 5 7 8 3 06 02725 1 225 1 7 50 6725 5 127 3 35 17 5 8 7 2 5 7 7 50 1 2 32 5 6833 02725 5 1 3803 3 0 6 7 0 6 0 6 8 5 7 06 32 5 6833 9 7 50 6725 2 5 5 027 21752 5 23...

Page 476: ...Wiring Diagrams SiUS372201EA 469 Part 7 Appendix FXEQ07 09 12 15 18 24PVJU 3D098557A...

Page 477: ...SiUS372201EA Wiring Diagrams Part 7 Appendix 470 FXDQ07 09 12 18 24MVJU C 3D050501C...

Page 478: ...Wiring Diagrams SiUS372201EA 471 Part 7 Appendix FXSQ05 07 09 12 15 18 24 30 36 48 54TAVJU C 3D110467C...

Page 479: ...8 77 72 5 027 21752 5 2 256 5 5 8 8 7 7 2 25 25 1 51 5 1 51 52 1 5 5 31 3 1 127 6 7 50 1 2 211 725 5 1 3527 7 9 5281 6 5 12 6 66 5281 1 6 86 1 175 5 027 21752 5 211 7 7 72 7 81 7 1 25 1 7 7 77 167 7 2...

Page 480: ...Wiring Diagrams SiUS372201EA 473 Part 7 Appendix FXMQ07 09 12 15 18 24 30 36 48 54PBVJU 3D093209B...

Page 481: ...2 5 027 21752 5 2 256 5 5 8 8 7 7 2 25 25 1 51 5 1 51 52 1 5 5 31 3 1 127 6 7 50 1 2 211 725 5 1 3527 7 9 5281 6 5 12 6 66 5281 1 6 86 1 175 5 027 21752 5 211 7 7 72 7 81 7 1 25 1 7 7 77 167 7 21 0 18...

Page 482: ...INAL 2 FIELD WIRING 3 IN CASE USING CENTRAL REMOTE CONTROLLER CONNECT IT TO THE UNIT IN ACCORDANCE WITH THE ATTACHED INSTALLATION MANUAL 4 WHEN CONNECTING THE INPUT WIRES FROM OUTSIDE FORCED OFF OR ON...

Page 483: ...SiUS372201EA Wiring Diagrams Part 7 Appendix 476 FXHQ12 24 36MVJU 3D048116C...

Page 484: ...Wiring Diagrams SiUS372201EA 477 Part 7 Appendix FXAQ07 09 12 18 24PVJU 3D075354F...

Page 485: ...ONNECT IT TO THE UNIT IN ACCORDANCE WITH THE ATTACHED INSTALLATION MANUAL 4 WHEN CONNECTING THE INPUT WIRES FROM OUTSIDE FORCED OFF OR ON OFF CONTROL OPERATION CAN BE SELECTED BY REMOTE CONTROLLER IN...

Page 486: ...IGH VOLTAGE FIELD JUNCTION TERMINAL PLUG CONNECTION EQUIPMENT GND FIELD GROUND X1A X3A X38A BS1 X12A X13A HAP X8A INDOOR UNIT PCB THERMISTOR HEAT EXCHANGER 1 2 MPU MULTI TENANT OPTION EEV COIL M K1R K...

Page 487: ...CTION TERMINAL PLUG CONNECTION EQUIPMENT GND FIELD GROUND X3A X38A BS1 X12A X13A HAP X8A INDOOR UNIT PCB THERMISTOR HEAT EXCHANGER 1 2 MPU EEV COIL M K3R TB6 TB8 LEARN PS TB5 TB4 ACC OUT RELAY OUT FLA...

Page 488: ...Wiring Diagrams SiUS372201EA 481 Part 7 Appendix 1 4 Air Treatment Equipment 1 4 1 Outdoor Air Processing Unit FXMQ48 72 96MFVJU 3D065426D...

Page 489: ...SiUS372201EA Wiring Diagrams Part 7 Appendix 482 1 4 2 Energy Recovery Ventilator VAM Series VAM300 470 600GVJU 3D073269D...

Page 490: ...Wiring Diagrams SiUS372201EA 483 Part 7 Appendix VAM1200GVJU 3D073270D...

Page 491: ...SiUS372201EA Electrical Component Box Removal Part 7 Appendix 484 2 Electrical Component Box Removal 1 Remove the screws 2 Lift the mounting plate up and fasten the hook Screw 3...

Page 492: ...Electrical Component Box Removal SiUS372201EA 485 Part 7 Appendix 3 Remove the screws Screw 5 Screw 3 2 compressor Type 1 compressor Type...

Page 493: ...EA Electrical Component Box Removal Part 7 Appendix 486 4 Pull out the refrigerant jacket Axis of rotation max 110 Do not open more than 110 The piping might crack when coming in contact with surround...

Page 494: ...Electrical Component Box Removal SiUS372201EA 487 Part 7 Appendix 5 Remove the screws 6 Remove the electrical component box Screw 8...

Page 495: ...ocal legislation z Ask a qualified installer or contractor to install this product Do not try to install the product yourself Improper installation can result in water or refrigerant leakage electrica...

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