Daikin AT12BV1LS Pocket Manual page 30

Si10-417
5.1.4 Fan Motor (DC Motor) or Related
Abnormality
Remote
Controller
Display
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
Service Diagnosis
A6
The rotation speed detected by the Hall IC during fan
motor operation is used to determine abnormal fan
motor operation.
When the detected rotation speed is less than 50% of
the H tap under maximum fan motor rotation demand.
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).
Troubleshooting
29