SiBE121021_C Troubleshooting for Outdoor Unit
Service Diagnosis 341
7.8 High Pressure Control in Cooling
Remote
Controller
Display
F6
Outdoor Unit LED
Display
A
j
1
i
2
h
3
i
4
i
5
h
Method of
Malfunction
Detection
High-pressure control (operation halt, frequency drop, etc.) is activated in cooling mode if the
temperature sensed by the outdoor heat exchanger thermistor exceeds the limit.
Malfunction
Decision
Conditions
îš„
The temperature sensed by the outdoor heat exchanger thermistor rises above about
65
°C.
îš„
The error is cleared when the temperature drops below about
50
°C.
Supposed
Causes
îš„
The installation space is not large enough.
îš„
Defective outdoor unit fan
îš„
Defective electronic expansion valve
îš„
Defective outdoor heat exchanger thermistor
îš„
Defective outdoor unit PCB
îš„
Defective stop valve
îš„
Dirty outdoor heat exchanger
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