It is a Dometic RV Frige. When this problem cropped up it was plugged into shore power and running on gas because i had set it for gas.
Sorry about the lack of info.
I am going to do BLF's suggestion and be back on later this eve. live in the sticks and have to take a ride to the city.
Follow UP: :h So I undid some wires in the back of the frige - Yeah bull in a chin shop. I disconnected the three that had a wire nut - wrong. Found the 12V power supply and disconnected it. Stuck a fuse in and it showed 12V at the back of the frige and the heater worked. So, I thought here we go and plugged the 12V power back into the terminal on the back of the frige and the fire works did not go off. What the hey. hooked all back together, went inside and hit the on button and the frige indicted it was happy.
What do you folks think. Should i throw something at it for the hey of it?
thanks again.