Samsung AC024BXUPCH Service Manual page 59

Troubleshooting
IPM (Over Current) error - (E464) (cont.)
Continue
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?
Continue
4-24
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.
Open the valve.
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