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02-22-2023, 10:01 PM
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#1
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Established Member
Join Date: Feb 2023
Location: Aguanga
Posts: 16
M.O.C. #32326
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Furnace turns off
I have a 2004 Montana 3575RL. My furnace turns, on runs for a bit then shuts off before getting to temps. I have to keep turning it off then on again. Any idea what to do to keep it running?
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02-22-2023, 10:29 PM
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#2
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Montana Master
Join Date: Aug 2004
Location: Livermore
Posts: 5,182
M.O.C. #1920
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Did you run out of propane recently (air in lines)? Check sail switch? Error code on board? Bad regulator or crossover valve? Those are where I would start. Best of luck.
__________________
Ron and Terrie Ames plus Meg - MOC #1920/KF0NTA
2021Montana 3230CK Super Solar+ Legacy Package
2021 Ram 3500 Laramie Longhorn, BIM Charging
4x4, SRW, LB, Crew Cab, Pullrite 3900 Hitch
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02-23-2023, 12:01 AM
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#3
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Established Member
Join Date: Feb 2023
Location: Aguanga
Posts: 16
M.O.C. #32326
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Quote:
Originally Posted by rames14
Did you run out of propane recently (air in lines)? Check sail switch? Error code on board? Bad regulator or crossover valve? Those are where I would start. Best of luck.
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I’ve swapped my propane a few times but didn’t have this issue last year. I just bought this last February. The stove works fine, if air were in lines I’d have issue weird stove as well right? What is the sail switch? Where would there be an error code? What’sa regulator and crossover valve? Newbie here
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02-23-2023, 12:31 AM
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#4
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Montana Master
Join Date: Mar 2019
Location: Milwaukie, OR
Posts: 1,568
M.O.C. #23668
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It's not the sail switch...it wouldn't ignite at all if it were. How long is it running before shutting off? A few seconds? minutes?
Do you have any access to the furnace? If there is any code it would be a series of flashes of the red light on the main board...if yours has one. Is it the original furnace?
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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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02-23-2023, 06:14 AM
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#5
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Montana Master
Join Date: May 2019
Location: Alton
Posts: 2,892
M.O.C. #24086
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IF your furnace actually fires up and runs for a bit, then quits,
I would swap the black 15A self resetting fuse in your fuse panel with a regular 15A blue one.
Simple easy test.
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02-23-2023, 07:21 AM
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#6
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Montana Master
Join Date: Dec 2007
Location: Kansas City, Missouri
Posts: 2,727
M.O.C. #7992
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Quote:
Originally Posted by Daryles
IF your furnace actually fires up and runs for a bit, then quits,
I would swap the black 15A self resetting fuse in your fuse panel with a regular 15A blue one.
Simple easy test.
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Doubt that a 2005 will have that engineering marvel in it!
__________________
2006 3000RK
2009 Ram 2500
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02-23-2023, 10:04 AM
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#7
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Site Team
Join Date: Oct 2005
Location: Carmichael - CA
Posts: 7,685
M.O.C. #4831
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In the Files section there is a helpfull diagnostic manual that will aid you is learning and figuring out the issue. It is the RV Furnace Troubleshooting.pdf
https://www.montanaowners.com/forums...?do=file&id=11
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Carl (n Susan)
There is more to life than fuel mileage.
2012 Montana 3700RL Big Sky Package towed by a 2015 Ford F350 6.7L PSD 4WD CC LWB
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02-24-2023, 06:43 AM
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#8
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Montana Master
Join Date: May 2020
Location: UPLAND
Posts: 1,279
M.O.C. #26190
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Does your stove top run without going out? If it does go out, you might have a kinked propane line. Maybe your regulator or main propane mounted switch is going out.
__________________
2019 Keystone Montana 3560RL, 2020 Chevy 2500 HD, Firestone airbags, Air Lift wireless compressor, Curt gooseneck, 20K Reese Goosebox, TST-507, USMC combat vet & retired LEO. Robert, Anika, Breanna, Dylan (daughter-in-law Stephanie). & our Great Pyrenees Layla
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03-01-2023, 01:28 PM
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#9
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Montana Master
Join Date: May 2003
Location: New Bern
Posts: 4,294
M.O.C. #311
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Mine did similar. I replaced the board on my 2017 and it words fine. Mine was tripping the breaker on the board area.
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03-01-2023, 01:48 PM
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#10
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Montana Fan
Join Date: Feb 2020
Location: BUZZARDS BAY
Posts: 117
M.O.C. #25753
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I had this exact problem and it was my thermostat. Swap the kitchen and bedroom thermostats to doublecheck
__________________
2020 Montana 3781RL
2020 GMC 3500 Denali HD Diesel SRW
20k Demco slider hitch
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03-01-2023, 01:50 PM
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#11
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Seasoned Camper
Join Date: Mar 2020
Location: Kingsport
Posts: 61
M.O.C. #25935
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You didn't have an issue last year, so what has changed since then? Have you added or rearranged any furniture? I had one trailer where the heat was ducted under the sink into the living room, where it promptly hit a chair, causing the heat to rise and hit the thermostat right above the chair. On/off/on/off/on/off, until it finally fractured the ceramic innards of the furnace. Repaired the furnace, made a duct extender out of cardboard, problem gone.
__________________
Maurice & Patricia & Bella & Tigger & Allana & Maximus
Kingsport, TN
2020 MHC 331RL
2014 RAM 2500HD SLT LB 4x4 6.4L SRW
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03-01-2023, 07:12 PM
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#12
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New Member
Join Date: Aug 2015
Location: Horseheads
Posts: 7
M.O.C. #17732
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I had the same problem three years ago and I talked to the thermostat manuf. and they advised me to change the stat it worked great after that.
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03-02-2023, 09:54 AM
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#13
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Seasoned Camper
Join Date: Aug 2017
Location: Johnstown
Posts: 52
M.O.C. #20360
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Thermocouple
It’s bad or dirty.
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03-02-2023, 12:49 PM
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#14
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Montana Fan
Join Date: Jun 2018
Location: Jacksonville
Posts: 384
M.O.C. #21993
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Had the same issue recently, was a 15 Amp self resetting fuse that would heat up and cool down, swapped it out with a regular 15 Amp.
__________________
I was once intelligent beyond my years. Now, I’m years beyond my intelligence.
2020 Montana 3561 Legacy, everything except paint.
2018 Silverado 3500 DRW, 50Gal Transfer Flow, Andersen hitch.
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