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11-14-2020, 09:10 AM
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#1
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Junior Member
Join Date: Oct 2020
Location: Coarsegold, CA
Posts: 21
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Why won't my furnace turn on? (Brrrrghhh!)
Hello
It was working fine a few days ago but now, when I set the controller to FURN 76º, it'll turn on for 5 minutes exactly before turning itself off, air is ambient (not warm).
I've reset the controller already by removing the cover from the wall, disconnecting the clip pin, waiting 30 seconds before reversing. Also simply did a factory reset. Nothing has helped.
The controller is confusing to me but I've been able to manage until now.
Any/all suggestions welcome. Thank you.
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11-14-2020, 09:22 AM
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#2
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Pickin', Campin', Mason
Join Date: Aug 2015
Location: South Western PA
Posts: 19,142
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Do you have propane?
Do other gas appliances work?
__________________
2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2024 Ford F-Series SCREW•7.3L•4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
F&AM Lodge 358 Somerset, PA - JAFFA Shrine - Altoona, PA
Days Camped ☼ '19=118 ☼ '20=116 ☼ '21=123 ☼ '22=134 ☼ '23=118☼ '24=90
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11-14-2020, 10:07 AM
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#3
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Junior Member
Join Date: Oct 2020
Location: Coarsegold, CA
Posts: 21
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Hi 5Picker, yes, I have plenty of propane and the stove works fine.
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11-14-2020, 10:10 AM
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#4
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Site Team
Join Date: Mar 2014
Location: Grayson County, Texas
Posts: 21,558
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When you say “controller”, are you talking about the thermostat or some other device?
__________________
2015 FR Wildcat 295RSX / GMC Sierra
Nights Camped: '13 = 49/'14 = 74/'15 = 74/'16 = 85/'17 = 110/'18 = 111/'19 = 86/'20 =108/'21 = 115/'22 = 135/'23 = 78; Booked for 2024 = 69
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11-14-2020, 10:34 AM
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#5
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Junior Member
Join Date: Oct 2020
Location: Coarsegold, CA
Posts: 21
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Hi Mr. Dan, thanks for the good question
I'm referring to the Dometic "Comfort Control Center II Thermostat" which controls the a/c and furnace.
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11-14-2020, 02:55 PM
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#6
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Member
Join Date: Nov 2016
Posts: 72
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Furnace not working?
I had the same thing! Mine ended up being my propane regulator was defective! If insufficient pressure, the furnace will not light off. Blows cold air a while then shuts down. The new propane regulator was installed and the furnace lit off and worked normal!
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11-14-2020, 03:12 PM
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#7
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Junior Member
Join Date: Jan 2017
Posts: 16
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11-14-2020, 03:16 PM
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#8
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Senior Member
Join Date: Jan 2015
Location: West Michigan
Posts: 641
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the Library at the top of this page in the green bar has a most of the manual in it to maintain or repair most of the systems in your RV.
Below is a link for suburban furnace from the Library.
https://www.forestriverforums.com/fo...?do=file&id=67
To rule out the propane regulator lite all the stove burners on high and try to start the furnace. If the stove burners flame drops or goes out you may have a propane regulator problem or a propane hose problem. If not go to page 23 of the suburban manual in the library for trouble shooting it.
Hope this helps Tim
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11-14-2020, 03:59 PM
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#9
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Junior Member
Join Date: Oct 2020
Location: Coarsegold, CA
Posts: 21
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Thanks, found the reason
When I changed tanks last time, I didn't close the hose tight enough and propane has been leaking... so much so the pressure was too low to light the furnace
I thought... "but I have no problems with my stove..." (there was enough pressure for that and I had just changed tanks last week
SO mystery solved. If the furnace doesn't work or just blows air for 5 minutes before shutting off, it's either the propane regulator or too little fuel/pressure to run the furnace.
Thanks everyone!!!!
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11-14-2020, 05:34 PM
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#10
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Pickin', Campin', Mason
Join Date: Aug 2015
Location: South Western PA
Posts: 19,142
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Glad to hear you are back in business.
Thanks for coming back and letting us know.
Troubleshooting always begins with the basics. More often than not, it usually isn't something overly complicated.
__________________
2022 Cedar Creek 345IK 5th Wheel•Solar & Inverter•2024 Ford F-Series SCREW•7.3L•4x4•Factory Puck•B&W Companion•TST Tire Monitor w/Repeater•Sinemate 3500w Gen.
F&AM Lodge 358 Somerset, PA - JAFFA Shrine - Altoona, PA
Days Camped ☼ '19=118 ☼ '20=116 ☼ '21=123 ☼ '22=134 ☼ '23=118☼ '24=90
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11-14-2020, 05:37 PM
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#11
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Junior Member
Join Date: Oct 2020
Location: Coarsegold, CA
Posts: 21
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Thank YOU
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