Atwood hydro flame furnace won't quit blowing

[AbbyA]

We were checking to make sure our frig would fire up on propane today for a trip next week. It didn't light right away so we turned on the furnace to get some gas flowing. The furnace didn't light but the fan came on. Now it will not turn off. The refrigerator is working fine.
2018 Flying Cloud, 20 foot.
What should we try?
Thanks for your help.

[n2916s]

Classic reboot — take ALL the power off your trailer, 12vdc (incl battery) and 120vac. Wait a few minutes, fire everything back up.

Often solves many a control board problem...

[BayouBiker]

If that doesn't work tap on the fan relay with the handle of a screw driver a few times.

[AbbyA]

Thank you both. Tapped on it and it turned off. I think my husband would have preferred the reboot but I saw the tapping idea somewhere first. Luckily we won’t need the furnace for awhile and have time to sort it out.

[GCinSC2]

AbbyA,

Just for grins can you post the model number of your furnace please? Just curious about looking up part number etc for blower motor relay or board.

Good you guys tried to fix and learn a bit.

Gary

[BayouBiker]

Originally Posted by AbbyA

Thank you both. Tapped on it and it turned off. I think my husband would have preferred the reboot but I saw the tapping idea somewhere first. Luckily we won’t need the furnace for awhile and have time to sort it out.

The Relay contacts get "welded" together after they age and corrode a bit. taping frees it up. they should be good for another 100 cycles or more. If they stick again, same plan.

[AbbyA]

Gary,
I will try to remember to post the model! Took it back to storage today with its notebook. Camping next week so I will look then!