Samsung AC052MN4DKH Service Manual page 70

1. Test items
1) Check the power connection. / Check the restart after power reset.
2) Check the compressor and the state of the compressor wire assembling.
3) Check the defective for compressor wire single parts.
2. Check procedure
Power on 30 seconds after power off.
Check the power connection. /
Check the restart after power reset.
1. Is there any problem in input power?
(Single-phase: 220Vac, 3-phase: 380Vac)
2. Does error occur again after
power reset?
Check the compressor
and connection of compressor wires.
1. Are all the resistance values between phases
matched? (U
2. Is compressor wiring normal?
(disconnection, wrong connection)
3. Is there any abnormal noise
from compressor rotation?
Is there a reading of MegaΩ of resistance
between compressor body and chassis?
Samsung Electronics
Yes
V, U W, V W)
Yes
Yes
Continue
No
1. Replace the compressor : If the resistance value
between phases of the compressor is different.
Power on.
End the service.
2. Reassemble wire : If the wire connection of the
No
compressor is wrong.
Power on.
End the service.
3. Replace the compressor : When loud abnormal
noise generates (metal cutting or grinding noise), or
severe vibration.
No
Troubleshooting
End the service.
Check the normal operation.
Check the normal operation.
Replace the compressor.
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