Furnace Issues

[Nudels2u75]

The furnace lights up and will blow heat out of the exhaust on the outside, and then immediatly goes out within seconds....This was the first time I have used it this year.....Last year it worked all winter, and it was heavly used, and this is a 2013 camper I purchased brand new...Are there any trouble shooting steps out there

[Javi]

The furnace lights up and will blow heat out of the exhaust on the outside, and then immediatly goes out within seconds....This was the first time I have used it this year.....Last year it worked all winter, and it was heavly used, and this is a 2013 camper I purchased brand new...Are there any trouble shooting steps out there

if you ain't got a bug screen over the exhaust vent then I'd be looking for a dirt dauber nest...

[scott24]

Possible the flame sensor isnt sensing the flame. If thats it, the flame will go out after 5 seconds.

[mcsearch1]

2X on the flame sensor. I have had them go bad on home NG furnaces.