Daikin F-Series Service Manual page 251

Troubleshooting
5.5.2 DC Motor
A6
Remote
Controller
Display
Method of The rotation speed detected by the
abnormal fan motor operation.
Malfunction
Detection
Malfunction When the detected rotation speed does not reach the demanded rotation speed of the target
tap, and is less than 50% of the maximum fan motor rotation speed.
Decision
Conditions
Supposed
Causes
240
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).
Hall IC during fan motor operation is used to determine
SiBE12-713
Service Diagnosis