Freeze-Up Protection Control Or Heating Peak-Cut Control - Daikin FTXS20G2V1B Service Manual

Troubleshooting
4.3 Freeze-up Protection Control or Heating Peak-cut
Control
A5
Remote Control
Display
„ Freeze-up protection control
Method of
Malfunction
Detection
„ Heating peak-cut control
„ Freeze-up protection control
Malfunction
Decision
„ Heating peak-cut control
Conditions
„ Short-circuited air
Supposed
„ Clogged air filter of the indoor unit
Causes
„ Dust accumulation on the indoor heat exchanger
„ Defective indoor heat exchanger thermistor
„ Defective indoor unit PCB
105
During cooling operation, the freeze-up protection control (operation halt) is activated
according to the temperature detected by the indoor heat exchanger thermistor.
During heating operation, the temperature detected by the indoor heat exchanger thermistor
is used for the heating peak-cut control (operation halt, outdoor fan stop, etc.)
During cooling operation, the indoor heat exchanger temperature is below 0°C.
During heating operation, the indoor heat exchanger temperature is above 65°C
SiENBE04-808_A
Service Diagnosis