I have a 6 gallon hot water tank on a 32' Prowler that is a 2006. The tank does not shut off. I have to manually flip the switch in the camper in order to get the propane to shut off. Had the board tested I think it was the ignitor board mounted on the outside of the camper. T & P valve does not blow off, so I replaced it because the water gets so hot. There is a switch under the cabinets for the off/on but I have no idea what this is for. Anyone have any suggestions I would greatly appreciate your input.