Troubleshooting for RA Indoor Unit SiBE121123_A
159 Service Diagnosis
5.2 Freeze-up Protection Control or Heating Peak-cut
Control
Error Code
A5
Method of Error
Detection
Freeze-up protection control
During cooling operation, the freeze-up protection control (operation halt) is activated
according to the temperature detected by the indoor heat exchanger thermistor.
Heating peak-cut control
During heating operation, the indoor heat exchanger temperature is used for the heating
peak-cut control (operation halt, outdoor fan stop, etc.)
Error Decision
Conditions
Freeze-up protection control
During cooling operation, the indoor heat exchanger temperature is below 0°C.
Heating peak-cut control
During heating operation, the indoor heat exchanger temperature is above 65°C.
Supposed
Causes
Short-circuited air
Clogged air filter of the indoor unit
Dust accumulation on the indoor heat exchanger
Defective indoor heat exchanger thermistor
Defective indoor unit PCB
To Next Page
Loading...
Need help?
General