LRFD22850SW LG REFRIGERATOR
When I plug the unit in sometimes the compressor will kick on and other times not. If I lightly tap the main control board with knuckle the compressor will kick on and come right down to proper temp. If I check after a few hours the compressor is again not running and both inside and outside fans are running,I have to tap the board again lightly to get the compressor to start.
I ran a test and got a code 22, starter relay.
Am I looking at a bad board or should I try the relay first.
Thanks