Daikin FTXN12KEVJU - High Pressure Control in Cooling

Troubleshooting SiUS041111
98 Service Diagnosis
4.15 High Pressure Control in Cooling
Remote
Controller
Display
F6
Method of
Malfunction
Detection
High-pressure control (operation halt, frequency drop, etc.) is activated in cooling operation 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 60°C
(140°F).
 The error is cleared when the temperature drops below about 50°C (122°F).
Supposed
Causes
 The installation space is not large enough.
 Dirty outdoor heat exchanger
 Defective outdoor fan motor
 Defective stop valve
 Defective electronic expansion valve or coil
 Defective outdoor heat exchanger thermistor
 Defective outdoor unit PCB