System Shutdown Due To Temperature Abnormality In Compressor - Daikin FTXR-T Series Service Manual

Troubleshooting
4.18 System Shutdown due to Temperature Abnormality in
Compressor
F8
Error Code
Method of Error
Operation is halted when the temperature detected by the discharge pipe thermistor exceeds the
determined limit.
Detection
Error Decision
Temperature exceeds the detection threshold of 127.5°C (261.5°F) during forced cooling operation.
Conditions
Supposed
 Abnormal operation due to air intrusion
Causes  Defective discharge pipe thermistor
Troubleshooting
Reference
Check No.01 Refer to P.112
Note
When replacing the defective thermistor(s), replace the thermistor as ASSY.
98
Be sure to turn off the power switch before connecting or disconnecting
Caution connectors, or parts may be damaged.
Abnormal
deformation of piping in the
outdoor unit
NO
Check No. 01
Check the discharge pipe
thermistor
OK
# Replace the unit as directed in the installation manual, making sure that air does not intrude
into the refrigerant pipings.
YES
NG
SiUS041829E
Replace the outdoor unit. #
Replace both the discharge pipe
thermistor and the outdoor unit
PCB (main PCB).
Replace the outdoor unit. #
(R23655)
Part 6 Service Diagnosis