Samsung AC026RN1DKG Service Manual page 199

IPM 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 ↔ W, V ↔ W)
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
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.
No
→ Power on.→ Check the normal operation.
→ End the service.
2. Reassemble wire : If the wire connection
of the compressor is wrong.
→ Power on. → Check the normal
operation. → 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.
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