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05-30-2020, 06:15 PM
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#1
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Junior Member
Join Date: May 2020
Location: Rochester
Posts: 9
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Furnace not working
Hi, My name is Jeannie and I have a 2017 Keystone Cougar bunkhouse and my furnace has stopped working...I got it to run for about 30 seconds but then it stopped again. Any tips or tricks? I'm really hoping because I cant get it to the dealership
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05-30-2020, 06:49 PM
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#2
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Site Team
Join Date: Oct 2011
Location: Joppa, MD
Posts: 11,714
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Two questions to start. Do you have propane, i.e. does the water heater work on GA, the stove top works, all burners at the same time with good steady blue flame?
Are you connected to shore power or just battery?
__________________
Marshall
2012 Laredo 303 TG
2010 F250 LT Super Cab, long bed, 4X4, 6.4 Turbo Diesel
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05-30-2020, 06:57 PM
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#3
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Junior Member
Join Date: May 2020
Location: Rochester
Posts: 9
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Yes, I have propane, I even hooked it up too a brand new tank. It's like it lights for a few seconds and then it goes out and the furnace stops. I can hear it. Also I'm connected to the power here.
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05-30-2020, 11:12 PM
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#4
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Senior Member
Join Date: Feb 2019
Location: Wickenburg
Posts: 3,271
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I wonder if the overtemp sensor is kicking in? Your fan is running, right?
My own furnace failed this winter, no ignition; I brought it in to the dealer for repair assuming it was a sail switch problem, and when he called me to pick it up, he told me the indoor portion needed to be cleaned, and I was supposed to do that every year. Probably doesn't help that we travel with a minimum of two retrievers. He was supposed to show me how to clean it myself, but I ended up having to pick it up during the stay-at-home period, so he didn't do it. But I know it involves unscrewing the wooden grid under the fridge; after that, I suppose I'll have to guess where to run a vacuum, or something. Anyway maybe that's something else you could try.
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2019 Cougar 26RBSWE
2019 Ford F-250
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05-31-2020, 04:56 AM
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#5
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Site Team
Join Date: Mar 2011
Location: Gaylord
Posts: 26,840
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Quote:
Originally Posted by Jeannie3293
Yes, I have propane, I even hooked it up too a brand new tank. It's like it lights for a few seconds and then it goes out and the furnace stops. I can hear it. Also I'm connected to the power here.
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First, Is this a NEW problem with the furnace? In other words, has it worked in the past and is this something that just happened, like "after you changed to the new propane bottle" ??? If so, I'd disconnect the new propane bottle, then reconnect it, SLOWLY open the valve on the propane bottle and try again. Sometimes, the "safety valve" in the propane bottle will activate, slowing propane flow to only a trickle. It's enough to operate the stovetop but not enough to operate the furnace or water heater.
If this is an "ongoing problem" with a history that goes back to before the propane bottle change, then there would be a different approach.
So.... Try reconnecting the propane bottle and let us know what happens...
__________________
John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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05-31-2020, 06:45 AM
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#6
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Junior Member
Join Date: May 2020
Location: Rochester
Posts: 9
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I have been worried about routine maintenance, nobody mentioned anything at the dealership when we bought the trailer. But home furnaces need filter replacement and things, does the trailer? And where should I vacuum?
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05-31-2020, 07:06 AM
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#7
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Site Team
Join Date: Mar 2011
Location: Gaylord
Posts: 26,840
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There is no filter in an RV furnace. In fact, the owner's manual warns not to restrict the air input with a filter. The "furnace interior" is sealed and there's no need (in normal conditions) to open it for cleaning or maintenance. If anything, remove the wooden grill over the furnace area, vacuum the visible spaces, reinstall the grill and keep on RVing.
__________________
John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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05-31-2020, 12:48 PM
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#8
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Junior Member
Join Date: May 2020
Location: Rochester
Posts: 9
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Oh thank you, that's a relief. And you do mean full time rv-ers?
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06-02-2020, 03:03 AM
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#9
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Senior Member
Join Date: Jan 2018
Location: Midlands of South Carolina
Posts: 277
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Since you've already checked and confirmed your propane, I would hazard a guess that the sail switch is not operating normally. What is likely happening is that the furnace attempts to start for thirty seconds and then stops.
The sail switch is inside of the furnace unit and is a safety device that is checked during furnace operation. When the furnace initially starts, the fan is run to clear any propane that may have leaked by the furnace propane valve for the first thirty seconds. At the end of that timed period, the sail switch is checked to see if it has changed state due to the air flow going past it. During normal operation, the switch changes states within a very short period due to the air flow and at the end of the timer, the ignition is started (generally a loud ticking sound) and the propane is admitted into the combustion chamber. If the sail switch doesn't change states during the timed period, a fault signal is generated which results in the ignition not being turn on, the propane valve is not opened, the fan is turned off and on some units, an error LED being ordered to flash in a predetermined sequence to indicate the fault of the sail switch. Take it to a shop for diagnosis/repair.
If you are hearing the ticking sound (should last for a couple of seconds) after the thirty second clearing of the combustion chamber, the furnace propane valve is not opening or you inadvertently set the propane regulator safety valve that was mentioned in the 5th post. If the slow reopening of the propane cylinder doesn't correct the problem, take it to a shop for diagnosis/repair.
Cheers!
__________________
Bill & Anne, Athena (cat), Jada (pup), and Cupcake (cat)
Retired Navy CPO, Vollie Firefighter and Industrial Maintenance Specialist
Wilson III: 2015 Ram Tradesman 2500 6.4l CC 4x4 SB
the gypsy, Belle III: 2018 Sprinter Limited 3531 FWDEN
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06-09-2020, 08:01 AM
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#10
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Senior Member
Join Date: Jan 2020
Location: abq, nm, usa
Posts: 373
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It could be a poorly connected overtempt sensor also, as was my case.
__________________
Dan and Rita
Prefer not to be hooked up in a RV park
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11-03-2020, 10:26 PM
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#11
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Junior Member
Join Date: Jun 2020
Location: Caldwell
Posts: 7
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Furnace not working
Quote:
Originally Posted by Keystoned
It could be a poorly connected overtempt sensor also, as was my case.
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Where is the over tempt sensor, in general? No one said anything about that on our Montana
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11-04-2020, 05:45 AM
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#12
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Senior Member
Join Date: Oct 2020
Location: Port Charlotte
Posts: 240
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Quote:
Originally Posted by seymour presents
Where is the over tempt sensor, in general? No one said anything about that on our Montana
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inside the furnace.
__________________
2011 Keystone Sprinter 323BHS. Retired Master Electrician. All Motor Homes are RV's. All RV's are not Motor Homes.
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11-05-2020, 05:46 AM
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#13
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Senior Member
Join Date: Mar 2014
Location: Mountain Home, Idaho
Posts: 2,977
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Not to discourage you from trying to TS and fix your furnace issues .. but if you don’t have some good mechanical and electrical skill sets you will be money ahead to have your issue looked at by service center or mobile RV tech....
The sail switch and hi limit switch as well as control board are all buried inside the furnace casing and will require removal of furnace to TS and repair..
__________________
2007 GMC Classic club cab 4x4 Duramax LBZ
2014 Alpine 3010 RE. 34 foot fifth wheel
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11-05-2020, 05:57 AM
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#14
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Senior Member
Join Date: Jan 2013
Location: Indiana
Posts: 2,665
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Most common problem when the fan blows but nothing fires, and then the fan quits, is the sail switch. Here's a short video explaining it:
On my Montana High Country, here's where the sail switch is, also the board is right in front. No need to remove to access it, except the cover held on by 8 screws.
__________________
2019 Montana High Country 375FL
2014 Chevy Duramax HD 6.6 - 3500 Diesel Dully Long bed Crew Cab
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11-07-2020, 02:06 PM
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#15
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Member
Join Date: Apr 2019
Location: Panama City
Posts: 75
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also on mine there is a on/off/reset breaker. Located below the sail switch. If reset switch is soft it has tripped. Reset or turn off and back on.
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11-07-2020, 02:15 PM
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#16
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Senior Member
Join Date: Mar 2019
Location: Milwaukie, OR
Posts: 1,388
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If it's firing and then turning off it's not the sail switch. In fact, all of the pre-ignition stuff is fine. The issue is post-ignition. That's fuel flow, air flow, flame sensor, etc. A visual inspection may reveal something blocking air flow but you still may need to remove the igniter to really see it. You might benefit from blowing some compressed air in and around the igniter. Short of that it will take some special equipment to test fuel flow which might point to a faulty regulator. Likely time to take it to a pro.
Edit: Mine briefly did the same thing. I took it apart to inspect the igniter and its distance to the propane manifold, put it all back together and it's been working fine. Sometimes just jiggling some of the wire connections can correct a weak contact point.
__________________
Jeff & Sandi (and Teddy - 7lb Schnorkie)
2018 Montana High Country 305RL
2015 RAM 3500 Crew Cab 4x4 DRW
Demco Recon Hitch on RAM Puck Ball
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11-21-2020, 10:47 PM
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#17
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Junior Member
Join Date: Jun 2020
Location: Caldwell
Posts: 7
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furnace on/off/reset switch
Our furnace keeps tripping this breaker. If i reset it it works for a day, maybe two then stops. Any suggestions as to why this is happening?
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11-22-2020, 02:54 AM
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#18
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Senior Member
Join Date: Oct 2020
Location: Port Charlotte
Posts: 240
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Most furnaces are not a DIY project. Most furnaces require complete removal from the RV and benched tested and worked on. If you do not have a removable outside access door then you need a mobile RV Tech. And If you don't have and know how to use a voltmeter you need a Mobile RV tech. Do not take it to a dealer.
__________________
2011 Keystone Sprinter 323BHS. Retired Master Electrician. All Motor Homes are RV's. All RV's are not Motor Homes.
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11-22-2020, 03:47 AM
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#19
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,235
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Quote:
Originally Posted by cavie
Do not take it to a dealer.
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Why is that?
__________________
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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11-22-2020, 03:57 AM
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#20
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Senior Member
Join Date: Aug 2019
Location: Clinton
Posts: 184
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Quote:
Originally Posted by chuckster57
Why is that?
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I agree. Dealers take forever to deal with. Get to know a good mobile tech. Either by word of mouth or on your own. I'm sure you're problem will be fixed quicker and quite possibly cheaper. Also most dealers want you to bring your rv to them, what a hassle. Much easier to find someone to come and fix it where you're parked .
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