2007 Cherokee 39KB

[Dulbd]

I need some insight on a problem I've had with the furnace in my 39KB. The model is 35F Suburban. When I first turn the furnace on it will cycle normally than with in 15-20 seconds it try to kick on, the blower will run but it won't ignite.
It will continue doing this until I reset the Thermostat, than the furnace will run then start all over again with the short cycle. I have replaced everything on the furnace than can be replaced but the problem continues. Suburban Furnace says it's a design flaw, that the furnace needs to be in the center of the trailer but Forest River states they aren't having this problem with any other 39KB. HELP.

[Dodge Guy]

Does it fire up and get hot? on our 05 Cherokee I had an issue once where the gas valve at the furnace stuck closed and wouldn`t open. I gave it a tap with a screwdriver and it fired up and ran flawlessly for the rest of the time we owned it. give it a shot!