New '13 Bigfoot
21 footer. Problems already with hot water heater. Lit this morning, stayed lit for about 5 minutes then shut down and won't relite. Water luke warm. I'm running on 110 AC and have propane
to other appliances. Of course there is no information on the water heater in my package of owners information. Dealer 2400 miles away. Need advice on trouble shooting please. Thanks.