Now I didn't read my owners manual so I could be wrong and maybe it was something else. I tried to turn on the fridge using only propane while the fiver sat in the drive. I did not level the trailer after pulling the truck out from under. It looked fairly level front to back.
I made sure it was getting gas as I ran the stove, and it did light for about a minute or slightly less. This happened about 5 times and it alarmed out. I never had a problem before but then it dawned on me I always leveled it. So I went to the bubble level on the side and it was high, whatever it took to get it off the truck. I centered the bubble and the fridge worked fine after that. So maybe there is a safety built into some?:h