Couldn't just change out the circuit board because the gas valve was different and had wires going to the old circuit board. So changed out entire assembly with the "new" used parts and changed out the upper control board. Everything is working, YAHOO!! Tried the 110V and the heater started to get hot so I switched over to LP and the burner lit and all seems to be working. Waiting to cool down the refer and will let it run overnight and wait and see if it's still functioning. I'm still confused over the 12VDC terminal block where 12V
comes in direct from the 12V
side of the converter/charger. When I reinstalled the connections I put the 12V
Hot (black wire) on the top terminal and the white wire on the center terminal and the unit didn't power up. When I switched the hot wire to the bottom I got power to the upper controls and everything started to work. I am wondering if I need to add a jumper from the bottom terminal to the top terminal? For now I'm going to leave well enough alone.