Specifications

SiBE04-624_B Troubleshooting
Service Diagnosis 87
2.9 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 temperature detected by the indoor heat exchanger thermistor
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

Dehumidifying solenoid valve remains closed (on cooling operation)