Hi guys,
I am a first time travel trailer owner and stumbled across this thread while working on water heater problems of my own. I have a Suburban 6 gallon propane only with DSI. I am in Florida and last night the temperatures got down to a bone chilling 40 degreeswoke up to low pressure/empty propane tank. Tank was changed and furnace and burners were still working. Hot water heater would spark but not ignite. DSI would go through 3 cycles and went off. Fuse was changed, igniter was changed, all connections and posts were cleaned. The igniter would spark and the pilot would lite, but the flame would cut out. It would go through 3 cycles and stop. I am guessing there is a flame proof problem but I am out of ideas. I can't even get a spark from the igniter now.