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Check

SiUS372201EA

425

Part 6 Service Diagnosis

Note(s)

4.2  Low Pressure Check

CHECK 2

Referring to the Fault Tree Analysis (FTA) shown below, probe the defective points

Abnormal drop in 

low pressure 

(Low evaporating 

temperature)

[In cooling] 

(

1.)

Defective 
low pressure 
control

Defective 
compressor 
capacity 
control

Defective low pressure 

sensor

Defective outdoor unit 
main PCB

Defective outdoor unit 
main PCB

Defective outdoor unit 
main PCB

Defective outdoor unit 
main PCB

Defective 
low pressure 
protection 
control

Defective low pressure 
sensor

Defective hot gas 
solenoid valve

[In both cooling 
and heating] 
(

2.)

[In cooling] 
If the indoor unit 
electronic 
expansion valve is 
excessively 
throttled: (

3.)

Defective indoor 
unit electronic 
expansion valve

Defective valve coil

Defective valve body

Defective 
control

Defective gas pipe 
thermistor of indoor unit

Defective liquid pipe 
thermistor of indoor unit

Defective outdoor 
unit electronic 
expansion valve

Defective valve coil

Defective valve body

[In heating] 
If the outdoor unit 
electronic 
expansion valve 
is excessively 
throttled:
(

4.)

Defective 
control

Defective low pressure 
sensor
Defective suction pipe 
thermistor

[In cooling]

Low suction air 
temperature of 
the evaporator

[In heating]

Low suction air 
temperature of 
indoor unit

Short circuit

Low room temperature

Defective suction air thermistor of indoor unit

Low suction air temperature of outdoor unit

Defective outdoor air temperature thermistor of outdoor unit

High pipe 
resistance

Abnormal piping length

Bent or crashed pipe

Clogging of foreign materials

Stop valve closed

Less 
circulation 
quantity of 
refrigerant

Degradation 
in evaporating 
capacity

Refrigerant shortage

Moisture choke

Dirty 

evaporator

Decreased 
airflow rate

Decreased 
fan output

Defective fan motor

Can the fan motor be rotated with hands?
Are the motor coil resistance and insulation normal?

If a spare PCB is mounted, is the 
capacity 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

Obstacle

Defective electronic 
expansion valve 
control

Is the pressure value checked with the Service Checker
corresponding to the measurement value of the pressure sensor?
Are the voltage characteristics normal?

Is the pressure value checked with the Service Checker
corresponding to the measurement value of the pressure sensor?
Are the coil resistance and insulation normal?

Are the voltage characteristics normal?

Are the coil resistance and insulation normal?

Check for the thermistor resistance and connection.

Check for the thermistor resistance and connection.

Are the voltage characteristics normal?

Are the coil resistance and insulation normal?

Is the pressure value checked with the Service Checker 
corresponding to the measurement value of the pressure sensor?

Check for the thermistor resistance and connection.

Is the suction air temperature more than 14°C (57.2°F)?

Is the room temperature less than 14°C (57.2°F)?

Is the connector properly connected?
Are the thermistor resistance characteristics normal?

Is the outdoor air temperature more than –20°C (–4°F)?

Is the connector properly connected?
Are the thermistor resistance characteristics normal?

Does the piping length fall in the permissible range?

Conduct visual checks for pipe conditions.

Is there any temperature difference caused before 
and after the filter or branch pipe?

Check if the stop valve is open.

Refer to 

CHECK 7

.

Eliminate moisture by vacuum operation. (Refer to 

CHECK 8

)

Is the heat exchanger clogged?

1. For details of compressor capacity control while in cooling, refer to Compressor PI control.

2. The low pressure protection control includes low pressure protection control and hot gas 

bypass control.

3. In cooling, the indoor unit electronic expansion valve is used for superheating degree control.

4. In heating, the outdoor unit electronic expansion valve (main) is used for superheating 

degree control of outdoor heat exchanger.

Содержание REYQ-AATJA

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 62: ...connectionport Liquidpipe connectionport Gaspipe connectionport Liquidpipe connectionport Gaspipe connectionport Liquidpipe connectionport Gaspipe connectionport Liquidpipe connectionport Gaspipe con...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

Страница 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...

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

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

Страница 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...

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

Страница 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...

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

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

Страница 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...

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

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

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

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

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

Страница 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...

Страница 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...

Страница 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...

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

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

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

Страница 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...

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

Страница 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...

Страница 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...

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

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

Страница 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...

Страница 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...

Страница 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...

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

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

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

Страница 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...

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

Страница 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...

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

Страница 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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