Daikin REYQ-AATJA, Service Manual, Page: 288 / 495

Troubleshooting by Error Code SiUS372201EA
281 Part 6 Service Diagnosis
H7 - 21 Defective fan PCB (Master): M1F Refer to the H7 flowchart and make a diagnosis of the
relevant unit based on the Error code shown to the left.
H7 - 22 Defective fan PCB (Master): M2F
H7 - 23 Defective fan PCB (Sub): M1F
H7 - 24 Defective fan PCB (Sub): M2F
H9 - 01 Defective outdoor air thermistor (R1T) (Master) Refer to the H9 flowchart and make a diagnosis of the
relevant unit based on the Error code shown to the left.
H9 - 02 Defective outdoor air thermistor (R1T) (Sub)
J3 - 16
Defective M1C discharge pipe thermistor (R15T*): Open
(Master)
*In case of REYQ72 type, R17T
Refer to the J3 flowchart and make a diagnosis of the
relevant thermistor of the relevant unit based on the Error
code shown to the left.
J3 - 17
Defective M1C discharge pipe thermistor (R15T*): Short
(Master)
*In case of REYQ72 type, R17T
J3 - 18
Defective M2C discharge pipe thermistor (R17T): Open
(Master)
J3 - 19
Defective M2C discharge pipe thermistor (R17T): Short
(Master)
J3 - 22
Defective M1C discharge pipe thermistor (R15T*): Open
(Sub)
*In case of REYQ72 type, R17T
J3 - 23
Defective M1C discharge pipe thermistor (R15T*): 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 thermistor (R18T): Open
(Master)
J3 - 39
Defective M2C compressor body thermistor (R18T): Short
(Master)
J3 - 42
Defective M2C compressor body thermistor (R18T): Open
(Sub)
J3 - 43
Defective M2C compressor body thermistor (R18T): Short
(Sub)
J3 - 47
Defective M1C compressor body thermistor (R16T*): Open
(Master)
*In case of REYQ72 type, R18T
J3 - 48
Defective M1C compressor body thermistor (R16T*): Short
(Master)
*In case of REYQ72 type, R18T
J3 - 49
Defective M1C compressor body thermistor (R16T*): Open
(Sub)
*In case of REYQ72 type, R18T
J3 - 50
Defective M1C compressor body thermistor (R16T*): Short
(Sub)
*In case of REYQ72 type, R18T
J3 - 56 Discharge pipe warning (Master)
J3 - 57 Discharge pipe warning (Sub)
J5 - 01 Defective compressor suction thermistor (R19T) (Master) Refer to the J5 flowchart and make a diagnosis of the
relevant thermistor of the relevant unit based on the Error
code shown to the left.
J5 - 03 Defective compressor suction thermistor (R19T) (Sub)
J5 - 18
Error detection of suction pipe before accumulator
thermistor (R5T) (Master)
J5 - 19
Error detection of suction pipe before accumulator
thermistor (R5T) (Sub)
Error code
Troubleshooting
Error Description Diagnosis