High Pressure Control In Cooling - Daikin E Series Service Manual

SiBE04-624

2.24 High Pressure Control in Cooling

F6
Remote
Controller Display
Outdoor Unit LED A5
Display
Method of During cooling, high pressure control (stop, frequency attenuation, etc.) is executed according
to the temperature detected by the heat exchanger thermistor.
Malfunction
Detection
Malfunction During cooling, when the temperature detected by the heat exchanger thermistor is 63°C or
more. (Fault condition is cleared when the temperature is below 52°C.)
Decision
Conditions
Supposed
Causes
Service Diagnosis
55 ( - )
Insufficient installation space
Defective outdoor fan
Defective electronic expansion valve
Defective heat exchanger thermistor
Defective outdoor unit PCB
Defective stop valve
Defective solenoid valve for dehumidification
Troubleshooting
173