E464 : O.c. (Over Current) Error - Samsung AC180JNHPKH/AR Service Manual

4-3-20 E464 : O.C. (Over Current) error

1. Checklist :
1) Is the refrigerant charged properly?
2) Does the compressor rotate normally?(Reverse rotation, Locking etc.)
3) Is connection of compressor wire normal?
4) Is compressor motor normal?(Insulation, Coil resistance etc.)
5) Does a temporary cycle overload condition happened?
2. Troubleshooting procedure
Is the installation of outdoor unit good?
Is the installation of indoor unit good?
Are the service valves full opened?
Does the compressor wire connected to the
compressor normally?
Is insuration resistance between each
compressor terminal and body normal?
Does the compressor rotate normally?
Did AC power voltage interruption happen
during the compressor in operation?
Samsung Electronics
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Reinstall and remove the obstruction
No
Reinstall and remove the obstruction
No
Open valve screw to the end.
No
Correct the compressor wire connection
No
Replace the compressor
No
Replace the compressor
Yes
Check AC power source
Replace INVERTER PCB
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