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
The temperature sensed by the outdoor heat exchanger thermistor rises above about
65
°C.
The error is cleared when the temperature drops below about
50
°C.
Supposed
Causes
The installation space is not large enough.
Defective outdoor unit fan
Defective electronic expansion valve
Defective outdoor heat exchanger thermistor
Defective outdoor unit PCB
Defective stop valve
Dirty outdoor heat exchanger