Mitsubishi SRK13YJV-S Technical Manual & Parts List page 46

Outdoor fan motor error
Is connector connection good?
YES
* Disconnect the fan motor
connector, then investigate
the DC fan motor and out-
door PCB separately.
Is the output of the outdoor PCB
normal?
YES
Power supply reset
Is normal state restored?
YES
Malfunction by temporary
noise
Rotor lock
NO
Correct connector connection
Is DC fan motor resistance value good?
NO
Replace outdoor PCB
Replace fan motor (If anomaly
NO
persiste after replacing fan motor,
replace outdoor PCB)
Is output voltage applied to all 3
phases of power transistor?
YES
Inspect compressor.
NO
YES
Replace outdoor fan motor
Notes (1) See pages 48 for the DC fan motor and outdoor PCB check
procedure.
(2) After making sure the DC fan motor and outdoor PCB are
normal, connect the connectors and confirm that the fan
motor is turning.
(If power is turned on while one or the other is broken down,
it could cause the other to break down also.)
NO
Defective outdoor PCB
¡ Check compressor wiring visually.
¡ Check insulation resistance. (1 M Ω or over)
¡ Check coil wire resistance.
Model 10, 13: 1.703 Ω (U-V, V-W, U-W) or more at 20°C
44
- -
[Defective fan motor, connector
poor connection, defective PCB]
[Compressor defect, outdoor
PCB defect]
If check results are normal,
compressor is locked.