Dc Motor - Daikin Super Multi NX C-Series Service Manual

SiE12-411

5.5.2 DC Motor

A6
Remote
Controller
Display
Method of
The rotation speed detected by the Hall IC during fan motor operation is used to determine
Malfunction abnormal fan motor operation.
Detection
Malfunction When the detected rotation speed is less than 50% of the H tap under maximum fan motor
Decision rotation demand.
Conditions
" Operation halt due to short circuit inside the fan motor winding.
Supposed
" Operation halt due to breaking of wire inside the fan motor.
Causes
" 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).
Service Diagnosis
Troubleshooting
173