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10-01-2017, 02:21 PM
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#1
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Junior Member
Join Date: Oct 2017
Location: new zealand
Posts: 9
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furnace issue
hello there.....we have a 40 foot Keystone Cougar 327 RES. ( 3 years old )
We appreciate advice on what to do with the following....
The gas oven works , the gas hob works but the furnace will come on but switches itself off after a few seconds....we have had no problems with the furnace in the 3 years we have owned it until 3 days ago.
Any help or advice would be much appreciated.
regards and thanks
Steve
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10-01-2017, 02:42 PM
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#2
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Site Team
Join Date: Feb 2014
Location: W. Texas
Posts: 17,671
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Does the unit click, click, ignite for a minute or two then go off? If so, mine did that and I had to replace the control board. I think others have had different issues so they can chime in as well.
When mine started acting up I opened the door to the unit (outside), removed the power lead for a few seconds then reconnected it. It would work a while then stop again. The dealership later told me I should have been able to turn the thermostat off then on and done the same thing but I never tried that.
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10-01-2017, 03:13 PM
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#3
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Junior Member
Join Date: Oct 2017
Location: new zealand
Posts: 9
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When we press the control panel on the wall the furnace comes on but blows out cold air from the heating vents on the floor but switches off after a few seconds.
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10-01-2017, 03:30 PM
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#4
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Senior Member
Join Date: Nov 2012
Location: Fruitland
Posts: 3,357
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Control board needed replaced when mine did the same exact thing. The furnace needs to be removed to get to the control board. After removal the control board can be removed and checked. I let the dealer do it for me.
__________________
2013 24RKSWE (27ft TT) Cougar 1/2 ton series SOLD 10-2021
2013 Ford F350 4x4 CC 6.7 engine, 8 ft bed, 3.55 rear end, lariat package
Retired from Oregon State Police in 2011 than worked another 9.5 years as a small town traffic cop:
As of 05-2020, I am all done with 39 years total police work. No more uniforms for me.
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10-01-2017, 03:35 PM
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#5
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Junior Member
Join Date: Oct 2017
Location: new zealand
Posts: 9
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Our biggest problem is we live in New Zealand.....no one will look at because its an RV and not a house.
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10-01-2017, 04:49 PM
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#6
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Site Team
Join Date: Mar 2011
Location: Gaylord
Posts: 26,981
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Quote:
Originally Posted by steveandmary
Our biggest problem is we live in New Zealand.....no one will look at because its an RV and not a house.
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Go to this website and download the manual. You may not have the same model number furnace, but essentially the technology behind how they work is very much the same from model to model. There's some very good troubleshooting guidelines that should help you isolate the problem and get your furnace working. Good Luck and once you do "dig into things" let us know how you're doing.
http://docs.renegaderv.com/Suburban/...11-05-2015.pdf
__________________
John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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10-01-2017, 08:29 PM
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#7
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Site Team
Join Date: Jun 2009
Location: Venice
Posts: 5,346
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It is possible it just needs a good cleaning. For some reason wasps and spiders like to make them self at home in the burner tubes of gas appliances. The clay or silk they leave behind will not burn out. The manual that John mentioned should give directions on cleaning.
Another possibility is the sail switch (safety devise) that senses air flow is not working and is shutting down the furnace before it ignites.
Good luck and I hope you can repair it or find someone who can help, Hank
__________________
 Hank & Lynn
2007 Cougar 290RKS, E-Z Flex, 16" XPS RIBs ( SOLD  .. Gonna miss her ... looking for new 5r)
2004.5 Dodge 2500 QC, LB, 5.9HO, WestTach gauges, Ride-Rite
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10-01-2017, 08:35 PM
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#8
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Senior Member
Join Date: Apr 2012
Location: Portland, OR
Posts: 4,218
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Quote:
Originally Posted by hankpage
It is possible it just needs a good cleaning. For some reason wasps and spiders like to make them self at home in the burner tubes of gas appliances. The clay or silk they leave behind will not burn out. The manual that John mentioned should give directions on cleaning.
Another possibility is the sail switch (safety devise) that senses air flow is not working and is shutting down the furnace before it ignites.
Good luck and I hope you can repair it or find someone who can help, Hank
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X2!
Sounds like a failure to light.
__________________
Russ & Paula and Belle the Beagle.
2016 Ram Laramie 3500 DRW 14,000# GVWR (New TV)
2005 Copper Canyon 293 FWSLS 32’ GVWR 12,360
Visit and enjoy Oregon State Parks
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10-01-2017, 09:02 PM
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#9
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Junior Member
Join Date: Oct 2017
Location: new zealand
Posts: 9
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Thank you for your help and advice....much appreciated.
I will keep you posted on the outcome.
I have to say what a great site this is......thanks again guys.
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10-02-2017, 05:20 AM
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#10
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Junior Member
Join Date: Jan 2015
Location: Ocala, FL
Posts: 27
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It may be a faulty sail switch. If the furnace is lighting, attempting to come up to speed and then shutting down it may be this switch.
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10-02-2017, 06:05 PM
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#11
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Junior Member
Join Date: Oct 2017
Location: new zealand
Posts: 9
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Hi there.....my furnace details are as follows.
Atwood Mobile Products
Model Number 8535-IV DCLP
I am unable to download the manual for the above.....something to do with my IP Address.......Are you able to send me a link so i can download it .
Many thanks
Steve
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10-02-2017, 06:22 PM
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#12
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,319
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Quote:
Originally Posted by MikeD3534
It may be a faulty sail switch. If the furnace is lighting, attempting to come up to speed and then shutting down it may be this switch.
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Furnace won't try to light if the sail switch is faulty or the fan isn't spinning fast enough.
OP: try this one
http://docs.renegaderv.com/Suburban/...11-05-2015.pdf
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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10-02-2017, 06:49 PM
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#13
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Site Team
Join Date: Mar 2011
Location: Gaylord
Posts: 26,981
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Try this link for the owner's manual for the Atwood 8500 series furnaces:
http://www.atwoodmobile.com/manuals/...0SP%201.08.pdf
On page 5 is a diagnostic chart that explains the "trouble light codes". Essentially, your furnace will "tell you what is wrong with it" by flashing lights....
You may also want to review this manual: http://bryantrv.com/docs2/docs/hflamefurn04.pdf
__________________
John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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10-02-2017, 10:46 PM
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#14
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Senior Member
Join Date: Feb 2015
Location: Texas
Posts: 1,089
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My Atwood furnace would start the fan, then the igniter would start clicking and the gas valve would open. it would run for a few seconds and then start the cycle over again. after 3 attempts it would quit.
It turned out that the control board had been damaged by water coming out of a cut in the kitchen sink drain pipe, from the person that the roto-zipped the hole in the outside wall of the coach for the outdoor electrical outlet.
The circuit board was not too difficult to change, but it was a pain to get the furnace out to access it.
I think new boards can be bought on-line rather inexpensively.
-Brian
__________________
2014 Bullet Premier 22RBPR - let the camping commence!
2013 F150 Platinum - 5.0 - 3.55 ELD + towing package
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10-03-2017, 02:41 PM
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#15
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Junior Member
Join Date: Oct 2017
Location: new zealand
Posts: 9
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Hello all.....my furnace issue was cause by a faulty sail switch .
Thank you everyone for all your help and advice.....very much appreciated.
Another positive is we now know about the Keystone RV forum....what a great site and refreshing knowing there are good people out there that want to help and give good advice to others.........thank you ...thank you ...thank you
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10-03-2017, 03:27 PM
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#16
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Senior Member
Join Date: Oct 2014
Location: Germantown, TN
Posts: 6,327
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Steve, thanks for the update. Keeps us all a little sharper!
__________________
Jim in Memphis, Wife of 51 years is Brenda
2019 F450 6.7 Powerstroke
2018 Mobile Suites 40RSSA
2021 40' Jayco Eagle
2001 Road king w/matching Harley sidecar
2021 Yamaha X2 Wolverine 1000
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10-03-2017, 10:03 PM
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#17
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Senior Member
Join Date: Nov 2012
Location: Fruitland
Posts: 3,357
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Glad you got it fixed. From the 1st post I thought the gas was coming on before it quit. But, if the switch fixed it sounds like the gas was not coming on before it turned off.
__________________
2013 24RKSWE (27ft TT) Cougar 1/2 ton series SOLD 10-2021
2013 Ford F350 4x4 CC 6.7 engine, 8 ft bed, 3.55 rear end, lariat package
Retired from Oregon State Police in 2011 than worked another 9.5 years as a small town traffic cop:
As of 05-2020, I am all done with 39 years total police work. No more uniforms for me.
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10-04-2017, 05:34 AM
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#18
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Senior Member
Join Date: Jun 2017
Location: Downey, Ca.
Posts: 344
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Quote:
Originally Posted by notanlines
Keeps us all a little sharper!
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Ever board design processes in it's own way.
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11-15-2017, 11:05 AM
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#19
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Junior Member
Join Date: Oct 2017
Location: new zealand
Posts: 9
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Hi everyone needing your help again....found its the sail switch and after weeks of that been found out...our gas guy tells us he cant find a replacement here in NZ.Gone back to guys we bought this from awaiting some answers...if i had to get myself ....where?Thanks for any help
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11-15-2017, 12:16 PM
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#20
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Site Team
Join Date: Mar 2011
Location: Gaylord
Posts: 26,981
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steveandmary,
You'll need to obtain the numbers from your actual sail switch and verify them against this one from Amazon: https://www.amazon.com/Atwood-36680-.../dp/B004QMX9WY I believe it's the one you need.
Keep us posted and if your sail switch is different from this, post what's on the switch you have "in hand" and we'll find one for you.
Stay tuned !!!
__________________
John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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