Troubleshooting
4-48
IPM over(Over Current) error (Error Code : E464)(cont.)
Yes
Turn off the power and change the location of the
temperature sensor or replace it.
No
Are the position and measuring value of the
temperature sensor normal?
Continue
Check the connection status of compressor.
No
Is compressor wire connected properly to the
compressor?
Yes
1. Replace the compressor : If the resistance value
between phases of the compressor is different.
ĺ Power on.ĺ Check the normal operation. ĺ
End the service.
2. Reassemble wire : If the wire connection of the
compressor is wrong.
ĺ Power on. ĺ Check the normal operation. ĺ
End the service.
3. Replace the compressor : When loud abnormal
noise generates (metal cutting or grinding
noise), or severe vibration.
No
Check the compressor.
1. Are all the resistance values
between phases matched?
(U ļ V, U ļ W, V ļ W)
2. Is compressor wiring normal? (disconnection,
wrong connection)
3. Is there any abnormal noise from
compressor rotation?
Yes
Replace the compressor.
No
Yes
Is there a reading of Mega of resistance
between compressor body and chassis?
Open the valve.
No
Is service valve fully opened?
Continue
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