Suburban Water Heater will not lite.

[stansoper]

When I de-winterized my Wildwood 29fkbs, I checked the water heater and it fired up under propane. During a recent trip, it would not lite under propane. It worked fine in electric mode. Surburban model SW6DE. When I turn on the DSI switch, it sparks and attempts to lite, but does not. Doesn't appear to be getting any gas. Reset and still will not lite. All my other gas appliances work just fine, Stove, Refrigerator, ect. When I turn on the electric switch on the water heater, I get hot water. What should I do next?

[northstar1960]

so it sparks but no fire at all ? if nothing but spark check wiring at the board and gas valve first . if still no light then it could be a bad board or better yet take a voltage meter set of dc pull the wire to the gas valve and see if you get power when it's trying to lite if you get power then it's gas valve

[todtc318]

Had the same issue last trip...fault light on....left it that way for about 2 minutes and it lit. No problem after that.