Water heater

[Jdg1172]

I picked up this camper about 6 weeks ago and have used it a few times now. 2017 cougar 336 bhs. Had a couple of bugs to work out but I fixed most of them. The last one I can't figure out is a problem with the water heater. It did work fine when I took delivery but now only works on electric. When I turn it on by propane the gas flow like it should but the igniter isn't working. If I light it manually it burns for only 5 seconds. When I google the problem I don't seem to find anything helpful. Dealer is booked out a month and they're famous for keeping campers for a few weeks. That's why I'm looking to resolve this on my own.
Anyone have any ideas?

Thanks
Joel

[chuckster57]

Look at the igniter. It serves as the flame sensor too. Maybe simple as came unplugged or it has failed, that would be my first guess.

[Jdg1172]

Thanks. I know it's plugged in to the igniter but I don't know about the other end. I don't think I can get to it without removing the unit. I'll pick up an igniter and try that first.
Thanks again.

[Javi]

I'd make sure that there are no spiderweb in the tube...

Javi

[chuckster57]

Originally Posted by Jdg1172

Thanks. I know it's plugged in to the igniter but I don't know about the other end. I don't think I can get to it without removing the unit. I'll pick up an igniter and try that first.
Thanks again.

The control board should be on the outside of the heater.