Podmods, Maintenance, Tips and Tricks: Furnace won't stay on

Print Page | Close Window

Furnace won't stay on

Printed From: R-pod Owners Forum
Category: R-pod Discussion Forums
Forum Name: Podmods, Maintenance, Tips and Tricks
Forum Discription: Ask maintenance questions, share your podmods (modifications) and helpful tips
URL: http://www.rpod-owners.com/forum_posts.asp?TID=12896
Printed Date: 24 Jun 2025 at 6:38am
Software Version: Web Wiz Forums 9.64 - http://www.webwizforums.com

Topic: Furnace won't stay on

Posted By: PodDude
Subject: Furnace won't stay on
Date Posted: 02 Jun 2019 at 7:26pm

Last trip, my furnace will kick on for say 30 seconds then turn off. Then I cycle through Off, Cool, Heat and same story. I had the heat set at 80F and the ambient temp was about 40F. I checked the fuse. Removing and re-inserting will kick it on, then it turns off again. Is this because my battery was low? I would think it wouldn't start in the first place if so. Thanks all!

Replies:

Posted By: offgrid
Date Posted: 03 Jun 2019 at 5:46am

If the blower is running your 12V is OK.

When the furnace control board gets a call for heat from the tstat it turns on the blower first while it checks for proper airflow before igniting. If it doesn't sense the airflow within 30 seconds then it shuts down. There is a device called a sail switch that has a paddle sticking into the air stream that is supposed to close when the air blows across it. It could be that this is not activating.

Here is the Suburban manual. There is a sequence of operation and a troubleshooting guide about halfway through.

http://docs.renegaderv.com/Suburban/Furnaces/FURNACE_Service%20and%20Training%20Manual%2011-05-2015.pdf - http://docs.renegaderv.com/Suburban/Furnaces/FURNACE_Service%20and%20Training%20Manual%2011-05-2015.pdf

-------------
1994 Chinook Concourse
1995 RV6A Experimental Aircraft
2015 Rpod 179 - sold

Posted By: PodDude
Date Posted: 04 Jun 2019 at 11:21am

Found a tiny wasp nest in the Furnace intake. Didn't seem big enough to cause a problem but I will have to test it again when I get a chance, hopefully that was it. Thanks for the help.