Samsung AC052MN4DKH Service Manual page 74

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Is service valve fully opened?
Is compressor wire connected properly to the
compressor?
Check the compressor.
1. Are all the resistance values
between phases matched?
(U V, 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?
Are the position and measuring value of the
temperature sensor normal?
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Yes
W, V W)
Yes
Yes
Yes
(cont.)
No
No
Check the connection status of compressor.
1. Replace the compressor : If the resistance
value between phases of the compressor is
different.
No
Power on.
End the service.
2. Reassemble wire : If the wire connection of
the 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
Replace the compressor.
No
Turn off the power and change the location of
the temperature sensor or replace it.
Troubleshooting
Open the valve.
Check the normal operation.
Check the normal operation.
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