Daikin FTKS20D2VMWL, Service Manual

Page: 137 / 228

Troubleshooting SiENBE04-507A
128 Service Diagnosis
4.15 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
65°C. (The error is cleared when the temperature drops below 54°C.)
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