Go Back   Montana Owners Club - Keystone Montana 5th Wheel Forum > MOC on M.A.R.S. > Montana Problems, Problem Solving & Technical Help
Click Here to Login

Thread Tools Display Modes
Old 02-09-2016, 11:28 AM   #1
Established Member
Join Date: Jul 2015
Location: Central
Posts: 13
M.O.C. #17675

Hello, our furnace has been operating intermittently. Sometimes, (usually 2-4 times in a 24 hour period) the fan and furnace will not come on when the tempature drops below the setting. If you turn the thermostat off and back on the fan will usually come on and and the furnace will fire, but sometimes all you hear is a click at the box near the rear ac unit. If you then go outside and turn the reset switch off and back on at the furnace the fan will start and furnace will fire.
I have reset the thermostat, and even installed a Dinosaur circuit board. There is 13.11 volts at the furnace.
Domestic thermostat and Atwood furnace.
Any help would be greatly appreciated.

Thank you,
Flintlock is offline   Reply With Quote
Old 02-09-2016, 12:43 PM   #2
Montana Master
Join Date: Feb 2005
Location: Haysville
Posts: 3,533
M.O.C. #3085
Mentioning that most times turning the thermostat off and then back on may be pointing to your problem. (thermostat) There also is a time delay relay that 12 VDC flows thru off your thermostat. It causes the several second delay before anything at all happens once you turn on your furnace. It may be flakey. You may have a bad 12 VDC ground. You may have a loose wire somewhere.
dieselguy is offline   Reply With Quote
Old 02-09-2016, 03:52 PM   #3
Montana Master
Join Date: Apr 2009
Location: Murrieta
Posts: 5,816
M.O.C. #9257
Send a message via MSN to Art-n-Marge Send a message via Yahoo to Art-n-Marge
The only thing I can offer is that 13.11 volts sounds okay because a "12v" battery typically reads 12.5-12.8 volts, and 13+ volts when it's being charged. I'm guessing you measured the voltage without disconnecting the battery and your rig is plugged into shore power and the onboard converter is charging the battery which can cause a 13.1 reading.

For example, disconnect the battery cables and the reading should drop to about 12.5 to 12.8 volts.

So the voltage looks good and your problem is at the furnace which is a 12v device on or off shore power.
Art-n-Marge is offline   Reply With Quote

Thread Tools
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
Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
Furnace harrisje66 Additions & Improvements 11 04-28-2015 03:33 AM
Furnace Fan Blk_Adventurer General Discussions about our Montanas 4 03-29-2015 12:18 PM
Furnace K&Gs3400RL Montana Problems, Problem Solving & Technical Help 46 01-12-2012 03:00 AM
Furnace pdferg Maintenance 3 10-14-2007 05:04 AM
Furnace Montana_1973 Montana Problems, Problem Solving & Technical Help 1 08-17-2004 02:42 PM

Powered by vBadvanced CMPS v3.2.3

This website is not affiliated with or endorsed by Montana RV, Keystone RV Company or any of its affiliates. This is an independent, unofficial site.

All times are GMT -6. The time now is 01:11 PM.

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2019, vBulletin Solutions, Inc.