Norcold frig?

dougrainer wrote:
Also, is the Refer in a slide room? Have you checked to roof top ventilation to make sure it is open for hot air to flow out? Doug

That is what came to my mind.

Make sure the roof vent (or upper vent if fridge is inside a slide-out) is not blocked by debris. Maybe a critter built a nest inside or at the opening of the vent.