Sunlight Supply Samsung Programmable Thermostat for Split Systems - Manual (Page 110)

12-47 Samsung Electronics
12-2-14 Compressor lock error
1. Checklist :
1) Is the connection of cable for the compressor and power?
2) Is the interphase resistance of compressor normal?
2. Troubleshooting procedure
Yes
Restart after power off.
Is the lock error occurred again?
Is the interphase resistance value of
compressor(u lv, vlw, wlu) normal?
Is the connection cable for the
compressor and power terminal normal?
Exchange the PCB.
Terminate the service.
Exchange the compressor.
Is the compressor body and
interphase resistance insulated?
Exchange the compressor.
Correct the cable connection.
Yes
Yes
Yes
No
No
No
No