Furnace not igniting

[geraldsmith]

Have only used the furnace a few times on our new A/S and on our last trip the furnace would ignite for 5 seconds and go out. It did that for 3 tries, then shut down altogether.

The Airstream dealer diagnosed it as a faulty circuit board and replaced it. Seems odd a brand new board would fail, but it did.

p.s. If your rig is equipped with a heat pump, don't forget (like we did) to use that if you can until your furnace is fixed.

[eubank]

What kind of furnace is it? There are only a couple of manufacturers of RV furnaces, though each offers a variety of models, small to large.
Lynn

[OTRA15]

Your packet of manuals should have one for the furnace. A Dometic? Find the procedure in their manual for doing a hard reset or reboot of the stat. That might fix it.

Here are the search results for "Dometic stat reset" -- plenty of threads to check out:

https://cse.google.com/cse?cx=011403...eset&gsc.sort=

Good luck!

Peter

[carl2591]

if the board was replaced under warranty don't worry.. there are times and things that fail that are sorta "new". plus I understand on a lot of furnaces the control boards are source of problems and replacing with the "dinosaur" board is the best deal.

Originally Posted by geraldsmith

Have only used the furnace a few times on our new A/S and on our last trip the furnace would ignite for 5 seconds and go out. It did that for 3 tries, then shut down altogether.

The Airstream dealer diagnosed it as a faulty circuit board and replaced it. Seems odd a brand new board would fail, but it did.

p.s. If your rig is equipped with a heat pump, don't forget (like we did) to use that if you can until your furnace is fixed.

[kjloeffler]

Thanks everyone. We've been troubleshooting and still think it's the elevation issue (since it worked in Denver and I got it to work once up here). It's an Atwood furnace, and there's a new part #32503 that is a high elevation kit for the vent. It's an easy change-out, just replace the 4 screws where the exhaust comes out and replace with this new vent that allows more air. We will try to get it and see if it helps! Will post again after our conclusion.

[carl2591]

high elevation kit... so what all come in the kit? any pictures of parts, instructions etc.

there have been several threads about high elevation LP usage and how to overcome the lack of 02 at altitude. some suggest upping the lp pressure and other have suggest less pressure and opening the air intake ports more.. most I have seen the air shutters are almost full open now for sea level up to 4000.

would be nice to see that the manf suggests ..

what is high altitude?.. Denver is 5300 and some places in Utah run 7500 plus.