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06-06-2017, 04:55 AM
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#41
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Rivet Master
2014 20' Flying Cloud
Sag Harbor
, New York
Join Date: Jun 2015
Posts: 17,523
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Bob's link was to the 20-footer thread, but you will have to find those posts by number. #1577 was in late March.
http://www.airforums.com/forums/f542...rs-127845.html
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06-06-2017, 09:30 AM
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#42
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Rivet Master
Tavares
, Florida
Join Date: Jun 2015
Posts: 1,052
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Peter and Bob, thanks for the links; am following them now.
Knock on wood the furnace is working and provided heat through the night. I'll keep this thread updated with any new info in case I have to.
On mine all the access is outside via the access panel. I never did see an LED flashing during the fault, but I probably don't know where to look.
Guess I need to add 'HVAC Tech' to my resume for being an RVer lol.
Thanks again.
Rich
__________________
“Character is doing the right thing when nobody’s looking. There are too many people who think that the only thing that’s right is to get by, and the only thing that’s wrong is to get caught.” - J.C. Watts Jr.
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06-06-2017, 10:55 AM
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#43
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Rivet Master
2014 20' Flying Cloud
Washington
, Missouri
Join Date: Mar 2014
Posts: 2,589
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Quote:
Originally Posted by Llando88
Peter and Bob, thanks for the links; am following them now.
Knock on wood the furnace is working and provided heat through the night. I'll keep this thread updated with any new info in case I have to.
On mine all the access is outside via the access panel. I never did see an LED flashing during the fault, but I probably don't know where to look.
Guess I need to add 'HVAC Tech' to my resume for being an RVer lol.
Thanks again.
Rich
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I could not find mine either until i reset the toggle and the state. Coincidentally the light appeared right in front of the decal for the error codes...probably for a reason.
Keep us posted down the road if you have problems. As I indicated I went thru the reset...it works...heat! for 4 or 5 days until finally the work around failed as well.
Happy Trails
Bob
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02-21-2020, 02:08 PM
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#44
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New Member
2017 30' Flying Cloud
2019 Atlas
Ormond Brach
, Florida
Join Date: Sep 2019
Posts: 2
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Dip switches ??
Quote:
Originally Posted by ATownTX
Hey all, just wondering if the line to the furnace has been completely purged of all air? Could that be it?
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Could the dip switch Need to be address?
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03-27-2020, 07:52 PM
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#45
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1 Rivet Member
2019 22' Sport
Santa Fe
, New Mexico
Join Date: Feb 2018
Posts: 5
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2019 22 ft. BAMBI SPORT - furnace issues
Hello, We have a 2019 22 ft. BAMBI SPORT. It has an Atwood furnace fan that blows for 20 seconds (cold air ) then turns off even on shore power. This has been an ongoing problem & never seems to work since we bought it. All other gas appliances work fine. Battery is AGM @ 13.6 volts. We had the dealer fix it since it is still under Warranty. It still does not work.
I searched other threads about this issue and found some information that others with older models had this problem too. But since our trailer is a newer model wanted to hear if anyone else had ideas about this or has had this problem with a newer trailer.
Thank you!
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03-27-2020, 08:14 PM
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#46
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Site Team
2002 25' Safari
Dewey
, Arizona
Join Date: Mar 2005
Posts: 15,615
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There should be an error code blinking on the circuit card. It sounds like a sail switch error. The sail switch tells the furnace that the fan is up to speed and to open the gas valve and start ignition. If it is a sail switch there are several possibles, but a common issue is insects nesting on the fan.
First check the error code, it will be 1 or 2 or 3 blinks and then a 3 second pause.
__________________
Richard
Wally Byam Airstream Club 7513
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03-27-2020, 08:56 PM
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#47
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Rivet Master
2014 20' Flying Cloud
Washington
, Missouri
Join Date: Mar 2014
Posts: 2,589
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This is an old thread with a good protocol from Andrew T
https://www.airforums.com/forums/f51...on-145370.html Post #12
Following Peter's above post referencing a link to my post, it didn't have the image of the very hard to see blinking light/diode.
A few years ago, my stat would turn on the fan but not fire...click click click. Reset switch... same delio.
Mine ended up being (according to the dealer under warranty) both the igniter and the sail switch, tho the error code pointed to the sail switch.
The light is hard to see but in the image it is the vertical column (you can just see it produing up ) immediately in front of the error code chart at the back of the board.
https://www.airforums.com/forums/f542/20-footers-127845-79.html Post 1577
images of the badboys... in my case
https://www.airforums.com/forums/f542/20-footers-127845-96.html post 1914
poking around I found a recap post of the diagnosis and repair
https://www.airforums.com/forums/f287/atwood-7900-ii-not-staying-lit-1-flash-w-3-second-pause-183642.html post #4
sorry for bouncing around here. It's been awhile.
b
p.s. my senior mind forgot I had saved this thread, so this is an edit....a great thread by Veg Hed
https://www.airforums.com/forums/f287/atwood-7900-ii-not-staying-lit-1-flash-w-3-second-pause-183642.html#post2131447 post #19
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03-28-2020, 06:02 AM
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#48
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Site Team
2007 30' Classic S/O
Somewhere
, South Carolina
Join Date: Apr 2010
Posts: 6,436
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Darren at My RV Works has about 15 videos on furnace trouble shooting and repairs. Playlist:
https://www.youtube.com/playlist?lis...0utYK7sVOKwXVY
And this one is a sample of diagnostics on a Dometic/Atwood AFM
He walks you thru the steps the furnace goes thru to fire up.
Gary
__________________
S/OS #001 2005 Dodge Ram 2500 5.9L 6 Speed
16" Michelins, Hi Spec Wheels, Max Brake, Dexter 4 Piston Disc Brakes, Carslile Actuator, Equal-I-Zer, Dill TPMS. Campfire cook. BMV-712. DEMCO 21K Lb Cast Iron coupler
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03-28-2020, 10:31 AM
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#50
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Site Team
2007 30' Classic S/O
Somewhere
, South Carolina
Join Date: Apr 2010
Posts: 6,436
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I saw that thread and a few months ago I pulled Atwood apart just to find it and inspect it. AFAIK never touched since built 2007. No debris, nada. But now I know where it is hiding.
I've watched most all of Darren's videos and each gas appliance has it's own sequence of operation to run and by knowing what the sequence is it opens up a diagnostic approach to fault finding.
One suggestion to anyone that has a bit of hands on skills go ahead and open up your Atwood/Dometic furnace inspection panel and have a look once in a while. If you're game for it remove the exhaust pipe under YOUR TERMS not sitting in camp cold and upset. By removing it every couple of years you break up the corrosion bond and you'll be able to remove it as req'd for service w/o blood sweat and tears of pain.
And i'm actually now thinking about taking an old spark plug to see if I could do a temp rig up to make a spark tester cause I don't carry a spare igniter.
Gary
__________________
S/OS #001 2005 Dodge Ram 2500 5.9L 6 Speed
16" Michelins, Hi Spec Wheels, Max Brake, Dexter 4 Piston Disc Brakes, Carslile Actuator, Equal-I-Zer, Dill TPMS. Campfire cook. BMV-712. DEMCO 21K Lb Cast Iron coupler
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