High Pressure Control In Cooling - Daikin D-Series Service Manual

Troubleshooting
5.18

High Pressure Control in Cooling

F6
Remote
Controller
Display
Outdoor Unit LED A
Display
Method of High-pressure control (stop, frequency drop, etc.) is activated in the cooling mode if the
temperature being sensed by the heat exchanger thermistor exceeds the limit.
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
234
1 2 3 4
5 4 1 4
Activated when the temperature being sensed by the heat exchanger thermistor rises above
65°C.
The error is cleared when the temperature drops below 50°C.
The installation space is not large enough.
Faulty outdoor unit fan
Faulty electronic expansion valve
Faulty outdoor unit heat exchanger thermistor
Faulty outdoor unit PCB
Faulty stop valve
Dirty heat exchanger
4
Si12-619A
Service Diagnosis