Free 7 Day Trial RV GPS App RV Trip Planner Campground Reviews RV Maintenance Free 7 Day Trial ×

Thread Tools Search this Thread Display Modes
Old 02-15-2009, 07:23 AM   #1
New Member
1963 26' Overlander
hurley , New York
Join Date: Feb 2006
Posts: 4
furnace wont start

I have an Atwood 7900 series 12 volt furnace. I ran out of propane and now the fan blows for 12 seconds, tries to fire for 6 seconds. It does this three times than the fan just blows cold indefinitely. I have done this several times to no avail. Every thing else gas driven works fine. Please help. Its very cold in the north east. Thanks.
matthew NYC is offline   Reply With Quote
Old 02-15-2009, 08:49 AM   #2
2 Rivet Member
1997 34' Limited
Charlottetown , Canada
Join Date: Jan 2006
Posts: 67
no mechanic

I'm no mechanic, however, mine did the same thing and we had to change the circuit board in the furnace. Ours would try to start but would not ignite. At first we thought it was the regulator but that did not work, we had to change the circuit board.
WBCCI9898 is offline   Reply With Quote
Old 02-15-2009, 10:18 AM   #3
eubank's Avatar

Airstream - Other
2016 Interstate Grand Tour Ext
Bosque Farms , New Mexico
Join Date: Jan 2004
Posts: 6,796
Sounds an awful lot like your running out of propane also caused the propane lines to run out "dry," so to speak.

On our rig, we generally have to get all other appliances (manual strike) to work before the fridge and heater will refire (both auto-strike). But I suspect it kind of depends on how your rig is piped.

But you're sure that there's no cut-off valve to the heater (and fridge) that's turned off, right?

WBCCI 21043
eubank is offline   Reply With Quote
Old 02-15-2009, 11:06 AM   #4
Rivet Master
Mike Leary's Avatar
Currently Looking...
1984 31' Airstream310
Ajo , Arizona
Join Date: Mar 2007
Posts: 7,649
Images: 4
I'd be looking at the ignitor board, replace it with a "Dinosaur" board. The furnace will
have to come out, so have them check the entire operation at the same time.
Dinosaur Electronics Home. High quality circuit boards for RV appliances.
Mike Leary is offline   Reply With Quote
Old 02-15-2009, 01:30 PM   #5
Rivet Master
ScottW's Avatar
2007 30' Classic
Hernando , Mississippi
Join Date: Sep 2006
Posts: 759
Images: 2
Matthew, I'm sorry but this is too good to pass up...
After you ran out of propane, did you refill the tank or is it still empty?

Seriously, try lighting the stove and let it burn for a minute or two.
Air 16426

Fully retired now!
Never start anything before noon and always plan on being finished by 5.
I will never HAVE to be anywhere ever again!
ScottW is offline   Reply With Quote
Old 02-15-2009, 05:11 PM   #6
New Member
1963 26' Overlander
hurley , New York
Join Date: Feb 2006
Posts: 4
Full tank. I tried it about five times and it finally caught. It has been working well for three hours now. Perhaps only a little air stuck in the lines takes time to purge, or possibly a small piece of dirt was lodged in from the tank and was pushed thru. Either way its working and I thank you all for suggestions and will use them if I have it happens again
matthew NYC is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Furnace Won't Fire/ Start jnerges Furnaces, Heaters, Fireplaces & Air Conditioning 47 03-02-2014 05:59 PM
Suburban furnace where to start? Pacerized Furnaces, Heaters, Fireplaces & Air Conditioning 37 09-12-2009 12:36 PM
You guys wont believe this... Mrcrowley Nu-Tone Appliances & Central Vac System 7 08-18-2008 01:08 PM
Brake light wont work; where to start. Swat Brakes & Brake Controllers 2 07-11-2007 08:09 PM
Oh no it wont move!! Angel73 Fresh Water Systems 9 03-17-2007 09:56 AM

Featured Campgrounds

Reviews provided by


This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.

All times are GMT -6. The time now is 03:12 AM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2021, Jelsoft Enterprises Ltd.