Thread Tools Search this Thread Display Modes
Old 11-16-2019, 07:56 PM   #1
Refugee from Napa, CA
Photobum's Avatar
2015 25' FB Flying Cloud
Madison , South Dakota
Join Date: Apr 2014
Posts: 549
Images: 5
Blog Entries: 1
Dometic Furnace

I have a 2015 25 foot FB Flying Cloud. I am experiencing issues with my furnace. It comes on for less that thirty seconds and then shuts off. The light on the board indicates an issue with the fan (one flashing light every three seconds).

I have replaced the circuit board and the sail switch to no avail. Any suggestions?

Instagram. Alluminator
Photobum is offline   Reply With Quote
Old 11-16-2019, 11:00 PM   #2
Rivet Master
Foiled Again's Avatar
2012 25' FB Eddie Bauer
Vintage Kin Owner
Virginia Beach , Virginia
Join Date: Sep 2004
Posts: 6,791
Have you checked to see if the fan starts and remains on? If it does, the next thing I'd look at would be the chimney. A bird, squirrel or mud daubers nest could be blocking the exhaust, or leaves and pine needles could clog the top. Wear gloves when cleaning that! Wet leaves are nasty.

If that doesn't solve the problem, go to your propane system. Enough gas pressure? Old hoses from the tank to the regulator? Those need to be replaced every five years. Water in the lines? Listen for burbling or gargling sounds in the line. Propane has some natural moisture and the scent chemical adds more. Drain the line at a low point (gagging happens) and carefully reflare and reconnect the pipe to the main line. (I never reuse the old fitting, but I don't know if I have been overly cautious. Why don't they make a low point drain fitting?)

Today is a gift, that's why they call it the present.
Foiled Again is offline   Reply With Quote
Old 11-16-2019, 11:04 PM   #3
4 Rivet Member
Wconley's Avatar
2018 28' International
Renton , Washington
Join Date: Sep 2016
Posts: 291
Open up the furnace and check the sail switch. Ours was dirty with some insulation wrapped on it and Jackson Center replaced it as a precaution. This seems to be a fairly common symptom.
2018 28 International Serenity
2013 F150 Ecoboost
Wconley is offline   Reply With Quote
Old 11-17-2019, 06:09 AM   #4
2016 25' International
Littlestown , Pennsylvania
Join Date: Feb 2014
Posts: 231
Another common problem is WEAK batteries! I'm assuming you're attempting to start the furnace with batteries that read above 12.1? If not,,, the fan will attempt to come on but then quit. I hope I'm not stating the obvious here.
glcmranger is offline   Reply With Quote

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

Similar Threads
Thread Thread Starter Forum Replies Last Post
Dometic heater zone 2 not working on furnace, not hot on HP sfgirl General Repair Forum 13 11-06-2015 02:21 PM
Air C/Heat P Dometic instead of Furnace? Donnagoes Furnaces, Heaters, Fireplaces & Air Conditioning 5 04-07-2015 04:14 PM
Dometic CCC forgot I have a furnace tcrum Furnaces, Heaters, Fireplaces & Air Conditioning 3 11-01-2014 09:27 AM
How to set the on/off temperature differential on Dometic Furnace warmrain Furnaces, Heaters, Fireplaces & Air Conditioning 16 01-13-2014 09:59 AM
Need Help Dometic Penguin To A Hydroflame 18000 furnace 1963tradewin Furnaces, Heaters, Fireplaces & Air Conditioning 2 10-28-2009 11:01 AM

Featured Campgrounds

Reviews provided by


This website is not affiliated with or endorsed by the Airstream, Inc. or any of its affiliates. Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.

Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 09:35 PM.

Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.