High Pressure Control In Cooling - Daikin FTXS09DVJU Service Manual

SiUS04-702
4.13

High Pressure Control in Cooling

4.13.1 09/12 Class
F6
Remote
Controller
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 Activated when the temperature being sensed by the heat exchanger thermistor rises above 149°F.
(The error is cleared when the temperature drops below 129°F.)
Decision
Conditions
Supposed
Causes
Service Diagnosis
The installation space is not large enough.
Faulty outdoor unit fan
Faulty electronic expansion valve
Faulty defrost thermistor
Faulty outdoor unit PCB
Faulty stop valve
Dirty heat exchanger
Troubleshooting
145