Start be resetting all the circuit breakers in the 120 volt panel. Turn off all breakers applying light pressure toward off. Turn on main breaker if equipped. Turn on branch breakers one at a time.
Next test receptacle in the refer outside access with a known good appliance. Drill, light or similar.
Test the 120 volt fuse on circuit board.
Next test the output from the circuit board for the 120 volt elements.
Bud
USAF Retired
Pace Arrow
2003 Chev Ice Road Tracker