Specifications

SiBE04-624 Troubleshooting
Service Diagnosis 197
2.38 Heater Wire Fault
Remote
Controller Display
PA
Outdoor Unit LED
Display
A5 55
Method of
Malfunction
Detection
A fault is identified when the outlet temperature of humidification fan does not reach a certain
temperature within a given time after the heater turned on.
Malfunction
Decision
Conditions
When the temperature detected by the thermistor is lower than the outdoor temperature (at
heater turned off) + 6°C, and this condition continues for 30 min.
Supposed
Causes

Breakage of heater filament

Breakage of heater harness

Abnormal temperature detected by outdoor temperature thermistor

Abnormal temperature detected by humidification fan outlet thermistor

Damaged main relay

Blown thermal fuse

Damaged heater control part

Extremely low voltage