SiUS071735EB
Troubleshooting
Service Diagnosis
94
4.23 System Shutdown due to Temperature Abnormality in
Compressor
Error Code
F8
Method of Error
Detection
Operation is halted when the temperature detected by the discharge pipe thermistor exceeds the
determined limit.
Error Decision
Conditions
Temperature exceeds the detection threshold of 127.5°C (261.5°F) during forced cooling operation.
Supposed
Causes
Abnormal operation due to air intrusion
Defective discharge pipe thermistor
Troubleshooting
Check No.01
Refer to P.105
Note:
When replacing the defective thermistor(s), replace the thermistors as ASSY.
YES
(R23655)
NO
OK
NG
Caution
Replace the outdoor unit.
#
Replace both the discharge pipe
thermistor and the outdoor unit
PCB (main PCB).
Replace the outdoor unit.
#
Abnormal
deformation of piping in the
outdoor unit
Check No. 01
Check the discharge pipe
thermistor
Be sure to turn off the power switch before connecting or disconnecting
connectors, or parts may be damaged.
#
Replace the unit as directed in the installation manual, making sure that air does not intrude
into the refrigerant piping.
Summary of Contents for FDMQ09RVJU
Page 12: ...SiUS071735EB 1 List of Functions Part 1 List of Functions 1 Functions 2 ...
Page 14: ...SiUS071735EB 3 Specifications Part 2 Specifications 1 Specifications 4 ...
Page 125: ...SiUS071735EB Check Service Diagnosis 114 15 18 24 class R25105 1 2 3 4 Multimeter ...
Page 127: ...SiUS071735EB Check Service Diagnosis 116 15 18 24 class R20704 W V U DC_P1 DC_N1 ...
