Recently my LG Refrigerator is not cooling or freezing. I pressed the test button twice and it shows error code 22 in the front panel. Does anyone know what is the issue? I googled this code and it mentioned AC compressor Relay, but I cannot locate the relay for this model. Not sure if this refrigerator has an AC compressor relay.

I checked the following, but still unable to identify the issue.

1. AC Compressor sounds good. It is running with normal sound
2. Checked the overload capacitor next to the AC Compressor with a multimeter for continuity and it looks good
3. Check the AC Capacitor and it seems to be good

Please let me know what is the next step or the error code 22 issue.