All ActivityMost RecentMost LikesSolutionsRe: furnacePulled cover to access furnace and checked voltage which was 11 amps checked connection at furnace seemed ok , noticed that during the manufacturing process the extra wire length on the furnace had been pinched between the wall and a ledger board to hold up the bottom shelf for the refer to set on used flat bar to remove wires and tried furnace has started and run for 1 1/2 days now, not what happened I am continuing to do the other things suggested. Thanks again for the help.furnaceI have a duo therm furnace in my trailer that will work perfectly fine on either shore power or generator but will not fire on battery's have checked battery voltage and they are at 13.78v. the fan will run for about 15 seconds and then shut down, I have had the furnace fire on battery's once while camping but can not get the furnace to do it again. have taken in for repair and was told it was the high limit which they replaced still would not work they said it was the battery's replaced both still not working figured I would try it on my own this time, Any one have any suggestions. Thanks