Si10-417
Troubleshooting
Service Diagnosis
29
5.1.4 Fan Motor (DC Motor) or Related
Abnormality
Remote
Controller
Display
A6
Method of
Malfunction
Detection
The rotation speed detected by the Hall IC during fan
motor operation is used to determine abnormal fan
motor operation.
Malfunction
Decision
Conditions
When the detected rotation speed is less than 50% of
the H tap under maximum fan motor rotation demand.
Supposed
Causes
Operation halt due to short circuit inside the fan motor
winding.
Operation halt due to breaking of wire inside the fan
motor.
Operation halt due to breaking of the fan motor lead
wires.
Operation halt due to faulty capacitor of the fan motor.
Detection error due to faulty indoor unit PCB (1).
Si10-417.fm Page 29 Wednesday, September 22, 2004 6:38 PM
