I have a 28ft Sunset Trail Reserve. Went camping this weekend and turned on the furnace for the first time. Have used the AC several times before with no issues. The furnace made a noise like the fan was rubbing something and then quit. Then both the furnace and AC would not work. The LCD display on the thermostat is dead. I would appreciate hearing if anyone else has had this issue. And if so what caused it and if there is a way to fix it without having to take it in for service.