Troubleshooting
Samsung Electronics 105
4-5-7 IPM(IGBT module) over current error (E464)
1. Check items
1) Is refrigerant charged?
2) Does the compressor work normally?
2. Check procedure
Is the outdoor unit installed well
according to installation manual?
Yes
No
Reinstall after remove the obstacle
Yes
No
3) Is the connection of compressor correctly?
Are the service valves fully opened?
Yes
No
Open the service valves
4) Is there any obstacle around indoor and outdoor unit?
Is the indoor unit installed well
according to installation manual?
Reinstall after remove the obstacle
Is the wire of compressor
connected correctly?
Yes
No
Check the wire of compressor
Is the value of resistance
between each phase(*) for compressor
smaller than 2
Ω?
Yes
No
Exchange the compressor
(*) U↔V, V↔W, W↔U
cont.
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