Daikin FTXS09HVJU - High Pressure Control in Cooling

Troubleshooting SiUS04-904
Service Diagnosis 121
4.13 High Pressure Control in Cooling
Remote
Controller
Display
F6
Method of
Malfunction
Detection
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
Decision
Conditions
Activated when the temperature being sensed by the heat exchanger thermistor rises above °F.
(The error is cleared when the temperature drops below °F.)
Supposed
Causes
 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
09/12 class 149 129
15/18/24 class 140 122