Over Current) Error - Samsung AC052FBMDEH/EU Service Manual

4-5-11 O.C.(Over Cirrent) 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?
4-21
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
Exchange the compressor
No
Exchange the compressor
Yes
Check AC power source
Exchange INVERTER PCB
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