Reply
 
Thread Tools Search this Thread Display Modes
 
Old 04-13-2013, 12:09 PM   #1
3 Rivet Member
 
Puyallup , Washington
Join Date: Sep 2011
Posts: 184
Furnace Question

When I flip on the battery switch the furnace tries to light. The thermostat panel is OFF
__________________

__________________
srpuywa is offline   Reply With Quote
Old 04-13-2013, 12:41 PM   #2
Rivet Master
 
Jim Foster's Avatar
 
1965 17' Caravel
1983 27' Excella
Walnut Grove/Laguna Woods , California
Join Date: Jun 2004
Posts: 1,615
Send a message via Yahoo to Jim Foster
Quote:
Originally Posted by srpuywa View Post
When I flip on the battery switch the furnace tries to light. The thermostat panel is OFF
Before I got too crazy about this. This is what I would do.

It is most likely fairly cool where your are. I would turn the switch on and off a few times, set the thermostat somewhere above the ambient temperature and see if the furnace will cycle a few times. If that goes well, I would then turn the furnace off. Being warm the fan will most likely run for few minutes to cool the unit off, then shut down.

Wait a while and see if the furnace starts up again. If it does, I would look for a bad switch that is not really turning off.

That is what I would try first.
__________________

__________________
Past President, El Camino Real Unit WBCCI#6620
Street Rod Builder (see avatar)
Kite flier (check out links below)
http://www.youtube.com/my_videos?feature=mhee
https://www.youtube.com/watch?v=6y1_U2XQ0bI
Jim Foster is offline   Reply With Quote
Old 04-13-2013, 02:44 PM   #3
Rivet Master
 
daveswenson's Avatar
 
2012 28' International
Issaquah , Washington
Join Date: Sep 2012
Posts: 767
Are you sure it's the furnace, and not the water heater trying to light?
__________________
Dave

2014 Ram 2500 CTD
Pro Pride
Centramatics
daveswenson is offline   Reply With Quote
Old 04-13-2013, 02:57 PM   #4
Rivet Master
 
Gene's Avatar
 
2008 25' Safari FB SE
Grand Junction , Colorado
Join Date: Sep 2007
Posts: 10,840
Sounds like you using the battery disconnect switch and turning it on, then the furnace gets 12 v. and turns on. It may be the thermostat is not turning off.

The old thermostats had a tube partly filled with mercury to close a circuit and those could be adjusted. The newer ones seem to be all electronic. Turn the temp way down below ambient temp. You can remove the thermostat from the wall and disconnect the wires and the furnace should shut off; reconnect them and see what happens. If it goes on then with the temp setting below the ambient temp, the thermostat is probably faulty. It could be the switch that turns the thermostat on and off; it may be broken, dirty, or a bug has been fried in there and shorted out the switch (if so, the readout would be lit). You have a 2012, so you should still be in warranty and can get a new one.

If it stays on when the thermostat is disconnected from the wiring, someone wired the system incorrectly, but if it worked ok before, it would be hard to believe that.

There should be a several wires behind the thermostat—A/C and furnace. Mark each one and draw a diagram where each goes to make sure you reconnect them correctly.

Gene
__________________
Gene is offline   Reply With Quote
Old 04-13-2013, 06:24 PM   #5
Rivet Master
 
daveswenson's Avatar
 
2012 28' International
Issaquah , Washington
Join Date: Sep 2012
Posts: 767
Is this the thermostat you have?
Products - Dometic

If it is, before the burner lights the fan will come on. Is that what is happening? If the display is off, then the furnace should not be trying to light, regardless of the mode selected.

Are you hearing the burner, without the fan? If so I'd check your water heater switch.
__________________
Dave

2014 Ram 2500 CTD
Pro Pride
Centramatics
daveswenson is offline   Reply With Quote
Old 04-13-2013, 06:57 PM   #6
3 Rivet Member
 
Puyallup , Washington
Join Date: Sep 2011
Posts: 184
Dave, I have the Dometic, I will check and see if is the water heater
__________________
srpuywa is offline   Reply With Quote
Old 04-13-2013, 08:23 PM   #7
Rivet Master
 
richinny's Avatar
 
2011 34' Classic
Westchester Cty.NY , / Miami FL
Join Date: Jul 2007
Posts: 3,122
if the thermostat was turned off while the furnace was in operation it might not have cycled off properly.
__________________
Ricky
2012 F150 Super Crew 5-1/2' bed Ecoboost 4x4 3.73 elec. lock diff. Propride hitch
give life. kidney & pancreas transplant 9/9/06
Ingrid-my unofficial '"World's Oldest Streamer" 1909-2008 R.I.P.
richinny is offline   Reply With Quote
Old 04-13-2013, 08:27 PM   #8
Rivet Master
 
1981 31' Excella II
New Market , Alabama
Join Date: Sep 2011
Posts: 5,648
Maybe it is a simple short in the thermostat cable.

Perry
__________________
perryg114 is offline   Reply With Quote
Old 04-13-2013, 08:52 PM   #9
Prairie Schooner II
 
Jim Flower's Avatar

 
2012 30' International
1997 25' Safari
1967 20' Globetrotter
Burlington , Ontario
Join Date: Jul 2009
Posts: 1,182
Before the furnace try's to light, the fan will come on first. When the furnace burner shuts down, the fan will run for bit. So, what you are describing sounds more like the water heater fireing up once it receives 12v ignition power. If that's not it, then check the phone cord hook up on the back of the thermostat. If that is ok,try the other end of the hook up in the ac unit. Remove the inside cowling, get some kid with skinny fingers to ensure that the thing is plugged in at that end. That's it for me.good luck. Jim
__________________
Jim
Jim Flower is offline   Reply With Quote
Old 04-13-2013, 08:56 PM   #10
3 Rivet Member
 
Puyallup , Washington
Join Date: Sep 2011
Posts: 184
Went to the trailer this afternoon and made sure the switches were off, flipped the battery switch and - silence - no more clicking

thanks all
__________________
srpuywa is offline   Reply With Quote
Old 04-14-2013, 09:31 AM   #11
Rivet Master
 
Gene's Avatar
 
2008 25' Safari FB SE
Grand Junction , Colorado
Join Date: Sep 2007
Posts: 10,840
It would be good if the thermostat is self repairing, but I think this may show up again. A loose wire, an intermittent short, or something else may be the underlying cause.

Gene
__________________
Gene is offline   Reply With Quote
Old 04-14-2013, 10:08 AM   #12
Rivet Master
 
mstephens's Avatar
 
2013 25' Flying Cloud
Cat City , California
Join Date: Sep 2012
Posts: 854
Oddly, I had thermostat trouble on the last day of our trip - yesterday. I tried to set the MODE to "FURN - 62F degrees" and the Heat Pump would come on blowing cold air. The outside temp was 52F. I tried cycling this many times to off, and then retry. Each time the HP came on. Later today now that we are home I will investigate, but it had me stumped.

It's the newest model Dometic controller on a 2012.
__________________
mstephens is offline   Reply With Quote
Old 04-14-2013, 10:18 AM   #13
Rivet Master
 
daveswenson's Avatar
 
2012 28' International
Issaquah , Washington
Join Date: Sep 2012
Posts: 767
Quote:
Originally Posted by mstephens View Post
Oddly, I had thermostat trouble on the last day of our trip - yesterday. I tried to set the MODE to "FURN - 62F degrees" and the Heat Pump would come on blowing cold air. The outside temp was 52F. I tried cycling this many times to off, and then retry. Each time the HP came on. Later today now that we are home I will investigate, but it had me stumped.

It's the newest model Dometic controller on a 2012.

That controller is kind of finicky. Sounds like time for a reset.

From the manual

• Make sure the CCC 2 thermostat is in the OFF mode.
• Simultaneously press the MODE and ZONE buttons. The LCD will display
“IniT” and all available zones.
• Release the MODE and ZONE buttons.
• Press the ON/OFF button to exit system set up


Be advised Mode to off means that you see off in the display, not the blank display from the on/off switch.

This should fix it.
__________________

__________________
Dave

2014 Ram 2500 CTD
Pro Pride
Centramatics
daveswenson is offline   Reply With Quote
Reply


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



Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 05:22 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.

Airstream is a registered trademark of Airstream Inc. All rights reserved. Airstream trademark used under license to Social Knowledge LLC.