Hello, I am glad to see all the great information posted. I am brand new to this and will be living in my 1991 Kit Companion 5th wheel we just purchased. I have 3 current problems: 1) Dometic Royale Designer Series RM3804 Fridge does not get cool at all but the freezer gets to 45 degrees, what should I be looking for as a problem? 2) Furnance Excalibur 8500-II Series doesn't seem to come on at all. I have checked the gas and ensured the valve is turned on, but even changing the thermostat and waiting doesn't seem to have any affect. Any ideas? 3)And finally, I am not sure of the model or brand but my water heater doesn't seem to work either. If I light the pilot light manually while holding down the pilot light button it will stay lit, but if I let go the pilot light goes out. And yes the gas valve is turned on. Is there anyway to check to see if my Water heater is also electric? Any help would be greatly appreciated!!!!