I have a 2008 Montanna 5th wheel. My a.c. unit Wil not shut off. The only way to shut it off is to shut off the c just fruit breaker.It will not shut off when then temp gets to where it supposed to be...
Before you throw parts at it, be sure that you don't have a relay (contactor in HVAC vernacular) with the points welded together in the closed position.