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06-04-2021, 10:21 AM
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#1
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Established Member
Join Date: May 2020
Location: Carleton
Posts: 23
M.O.C. #26237
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Furnace shutting down after 2 - 3 minutes FYI
I have a 2021 3855BR. The furnace would start but shut down after 2 minutes or so. The culprit was the 15 AMP resetting fuse in the fuse box. This is just an FYI for anyone searching for furnace issues I wanted to share.
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06-04-2021, 10:47 AM
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#2
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Montana Master
Join Date: Mar 2019
Location: Milwaukie, OR
Posts: 1,475
M.O.C. #23668
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Thanks for the info. There are several reasons a furnace might not work properly. I hadn't heard of this one...so good to know. Did you solve the issue? Was it as simple as replacing the fuse?
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Jeff & Sandi (and Teddy - 7lb Schnorkie)
2018 Montana HC 305RL / HW Progressive EMS
2015 RAM 3500 Laramie Longhorn Crew Cab 4x4 DRW / Demco Recon Hitch on RAM Puck Ball
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06-04-2021, 11:13 AM
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#3
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Established Member
Join Date: May 2020
Location: Carleton
Posts: 23
M.O.C. #26237
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Yes, replacing the fuse did it BUT after we tried several other things that did not work. I saw a lot of posts on sail switches going bad so replaced that. Cleaned out the exhaust tube to make sure there was nothing in it. Ran gas to stove for 15 minutes to make sure there was not an issue with gas flow.
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06-04-2021, 05:49 PM
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#4
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Montana Fan
Join Date: Dec 2020
Location: STUARTS DRAFT, VA
Posts: 140
M.O.C. #27830
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Quote:
Originally Posted by JMGJR
I have a 2021 3855BR. The furnace would start but shut down after 2 minutes or so. The culprit was the 15 AMP resetting fuse in the fuse box. This is just an FYI for anyone searching for furnace issues I wanted to share.
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Had the same thing with our 2021 3121RL, darn near froze on the first night out in January. Our dealer told me that there was a bad batch of resetting breakers and replacing it with a 20 amp automotive fuse did the trick.
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John and Carrie
2021 Montana 3121RL Legacy
2020 F-250 Lariat 4X4 Short 3.55
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06-04-2021, 06:07 PM
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#5
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Montana Master
Join Date: Mar 2019
Location: Milwaukie, OR
Posts: 1,475
M.O.C. #23668
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Quote:
Originally Posted by JMGJR
Yes, replacing the fuse did it BUT after we tried several other things that did not work. I saw a lot of posts on sail switches going bad so replaced that. Cleaned out the exhaust tube to make sure there was nothing in it. Ran gas to stove for 15 minutes to make sure there was not an issue with gas flow.
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Yeah, I jumped thru several hoops on ours before I figured out it was a faulty/weak propane regulator. Everything else will still work on lower PSI but furnace won't.
__________________
Jeff & Sandi (and Teddy - 7lb Schnorkie)
2018 Montana HC 305RL / HW Progressive EMS
2015 RAM 3500 Laramie Longhorn Crew Cab 4x4 DRW / Demco Recon Hitch on RAM Puck Ball
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06-09-2021, 05:01 AM
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#6
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Seasoned Camper
Join Date: Sep 2019
Location: Rattan
Posts: 67
M.O.C. #24936
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JMGJR
Question - You said the furnace quit after 2 minutes- does the fan shut off also or does the flame just go out?
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Kevin & Pat Moody
2020 Montana 3701LK, Legacy Package, Satellite, Solar, Generator, 2019 Ford F350 Dually, BD5F Trailer Saver, 12' Trailer with Kayak Rack, Polaris General XP 4 1000
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06-09-2021, 01:11 PM
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#7
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Established Member
Join Date: May 2020
Location: Carleton
Posts: 23
M.O.C. #26237
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The fan ran for a few more seconds then shut down too.
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06-09-2021, 02:41 PM
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#8
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Seasoned Camper
Join Date: Sep 2019
Location: Rattan
Posts: 67
M.O.C. #24936
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Ok - different casual part probably - my fan continues to run and the furnace lights but goes out after 10-15 seconds. This repeats for 5 minutes or so before the furnance times out.
__________________
Kevin & Pat Moody
2020 Montana 3701LK, Legacy Package, Satellite, Solar, Generator, 2019 Ford F350 Dually, BD5F Trailer Saver, 12' Trailer with Kayak Rack, Polaris General XP 4 1000
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