Samsung AC071MN4PKH Service Manual page 88

Troubleshooting
IPM over(Over Current) error (Error Code : E464)(cont.)
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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
No
No
Check the connection status of compressor.
1. Replace the compressor : If the resistance value
between phases of the compressor is different.
Power on.
End the service.
No
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
No
Turn off the power and change the location of the
temperature sensor or replace it.
4-48
Open the valve.
Check the normal operation.
Check the normal operation.
Replace the compressor.