Mitsubishi SRK10YJV-S, Technical Manual & Parts List

Page: 46 / 69

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44
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Outdoor fan motor error
[Defective fan motor, connector
poor connection, defective PCB]
Is connector connection good?
YES
NO
NO
Is the output of the outdoor PCB
normal?
Power supply reset
NO
YES
YES
Correct connector connection
Is DC fan motor resistance value good?
Replace outdoor PCB
Replace outdoor fan motor
* Disconnect the fan motor
connector, then investigate
the DC fan motor and out-
door PCB separately.
Rotor lock
[Compressor defect, outdoor
PCB defect]
NO
YES
¡
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
Is output voltage applied to all 3
phases of power transistor?
Inspect compressor.
Defective outdoor PCB
If check results are normal,
compressor is locked.
Is normal state restored?
Malfunction by temporary
noise
Replace fan motor (If anomaly
persiste after replacing fan motor,
replace outdoor PCB)
NO
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.)
YES