Daikin D Series Service Manual page 148

SiBE12-519
4.4.2 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 is less than 50% of the H tap under maximum fan motor
rotation demand.
Decision
Conditions
Supposed
Causes
Service Diagnosis
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.
Hall IC during fan motor operation is used to determine
Troubleshooting
139