Troubleshooting SiUS041829E
96 Part 6 Service Diagnosis
4.17 High Pressure Control in Cooling
Error Code F6
Method of Error
Detection
High-pressure control (operation halt, frequency drop, etc.) is activated in cooling operation if the
temperature sensed by the outdoor heat exchanger thermistor exceeds the limit.
Error Decision
Conditions
The temperature sensed by the outdoor heat exchanger thermistor rises above 57.5 ~ 60°C (135.5
~ 140°F) (depending on the model).
Supposed
Causes
Installation space not large enough
Dirty outdoor heat exchanger
Defective outdoor fan motor
Defective stop valve
Defective electronic expansion valve or coil
Defective outdoor heat exchanger thermistor
Defective outdoor unit PCB
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