Sunlight Supply Samsung Programmable Thermostat for Split Systems - Manual (Page 107)

Samsung Electronics 12-44
12-2-11 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
Yes
Yes
No
No
No
No
No
No
Yes
Yes
Yes
Does the compressor wire connected to the
compressor normally?
Yes
Yes
Exchange the compressor
Reinstall and remove the obstruction Is the installation of outdoor unit good?
Reinstall and remove the obstruction Is the installation of indoor unit good?
Open valve screw to the end. Are the service valves full opened?
Correct the compressor wire connection
Is insuration resistance between each
compressor terminal and body normal?
Exchange INVERTER PCB
No
Does the compressor rotate normally?
Did AC power voltage interruption happen
during the compressor in operation?
Exchange the compressor
Check AC power source