The camper is new to me in Feb so I am not sure what was done before but it is 2010 Jayco so not too old. The fridge is a Norcold 323t and I have set it to AC for 8+ hours and it didn't cool. This weekend I tried about 5 hours on propane and same result. I got home yesterday and pulled it out so now I have better access to it out but now can only test on AC. Using a non-contact infrared thermometer the heater tube thing gets hot (200+ degrees at the top) there isn't any yellow or smell like it is leaking. Last night I flipped it upside down since reading that sometimes there could be a blockage. When flipping it back I could hear the fluid moving so I am assuming it is still in there. I plugged it back in this morning and will run it for awhile. Is there anything else I should try or should I say forget it and put in a "dorm" fridge?