Reply
 
Thread Tools Search this Thread Display Modes
 
Old 03-23-2014, 04:04 PM   #1
Ready to go campin?
 
wvabeer's Avatar
 
1992 33' Land Yacht
Evans , West Virginia
Join Date: May 2002
Posts: 349
Images: 49
Battery drain

I have my battery drain narrowed down to a fuse, it says" furnace comp. Appliance lts. but pulling it only seems to power down the furnace. Has anyone had a similar problem?
__________________

__________________
92 Landyacht 33, 454 tag axle
wvabeer is offline   Reply With Quote
Old 03-23-2014, 05:33 PM   #2
Ready to go campin?
 
wvabeer's Avatar
 
1992 33' Land Yacht
Evans , West Virginia
Join Date: May 2002
Posts: 349
Images: 49
I should have noted the amp draw. .6 to .8
__________________

__________________
92 Landyacht 33, 454 tag axle
wvabeer is offline   Reply With Quote
Old 03-23-2014, 05:43 PM   #3
Rivet Master
 
richw46's Avatar
 
2006 23' Safari SE
Lexington , Kentucky
Join Date: Dec 2012
Posts: 2,175
Images: 6
A fuse is just a thin piece of wire. I don't see how it can be a power drain. There's something else, like a transformer or light, that's causing a drain.
__________________
-Rich

Rich & Yvonne
2006 Safari SE -Dora-
2004 4Runner SE

richw46 is offline   Reply With Quote
Old 03-23-2014, 06:01 PM   #4
Ready to go campin?
 
wvabeer's Avatar
 
1992 33' Land Yacht
Evans , West Virginia
Join Date: May 2002
Posts: 349
Images: 49
Ok, I narrowed the drain down to fuse 7 circuit. I wouldn't think the furnace is supose to draw any power when off. I looked to see if any cargo lights were on. they pull .6 amp
__________________
92 Landyacht 33, 454 tag axle
wvabeer is offline   Reply With Quote
Old 03-23-2014, 06:53 PM   #5
Rivet Master
 
92landyacht's Avatar
 
1992 36' Land Yacht
Grayson , Georgia
Join Date: Nov 2011
Posts: 772
Try disconnecting the power wire to each furnace and see if the power drain goes away. I don't think there should be any significant drain from the furnace when the thermostat is turned off.
__________________
92landyacht is offline   Reply With Quote
Old 03-23-2014, 08:09 PM   #6
Rivet Master
 
1994 30' Excella
Mississauga , Ontario
Join Date: Jun 2004
Posts: 939
could it be the thermostat?
__________________
Al and Jean

TAC ON-3
BigAl is offline   Reply With Quote
Old 03-24-2014, 07:28 AM   #7
Rivet Master
 
richw46's Avatar
 
2006 23' Safari SE
Lexington , Kentucky
Join Date: Dec 2012
Posts: 2,175
Images: 6
Quote:
Originally Posted by wvabeer View Post
Ok, I narrowed the drain down to fuse 7 circuit. I wouldn't think the furnace is supose to draw any power when off. I looked to see if any cargo lights were on. they pull .6 amp
If you have (or can get at the manufacturer's web site) the schematic for the furnace, I'd start at the fuse and trace the circuit for components. If there is any kind of transformer in that line it's possible that's where the drain is. I would think that a 12v furnace wouldn't require one, it's already stepped down. It might be in the circuit board but that would be difficult to test. You may have to take it to a professional.

Other than the power drain, is there anything wrong with the furnace's operation?
__________________
-Rich

Rich & Yvonne
2006 Safari SE -Dora-
2004 4Runner SE

richw46 is offline   Reply With Quote
Old 03-24-2014, 08:28 AM   #8
Ready to go campin?
 
wvabeer's Avatar
 
1992 33' Land Yacht
Evans , West Virginia
Join Date: May 2002
Posts: 349
Images: 49
The thermostat is just a switch. If its a board I'll get one . I have been going thru the owners manual schematics trying to see if there is anything else on that circuit. I can't find any. I don't want to tear into the furnace just yet. I keep thinking there is a light on that I am missing.
__________________
92 Landyacht 33, 454 tag axle
wvabeer is offline   Reply With Quote
Old 03-24-2014, 10:29 AM   #9
Rivet Master
 
Silver Goose's Avatar
 
2008 27' Classic FB
Burkburnett , Texas
Join Date: Jul 2010
Posts: 955
An overlooked light in a seldom used compartment is a good bet. The easiest way to find it is on a dark night, look everywhere. I've got one on my trailer over the dump valves that isn't obvious it's on in the day and can get covered with road mud so that it isn't particularly obvious at night either. A fluorescent light fixture with a bad bulb will still draw current if it's switched on. I'm sure you tested everything to find out what doesn't work when you pulled that fuse. Antenna amplifier, LPG detector (normally wired directly off battery)? As previously noted, disconnect the power feed at the furnace to rule it in or out as the culprit and go from there. On a previously owned rig there's no telling what the PO may have installed and simply tapped into an available 12v wire. On an otherwise untouched rig it may still have other devices besides the furnace on that circuit. By isolating it to a particular fused circuit, you're close to a solution.
__________________
AIR 47751
Air Safe Hitch, Reese Dual Cam 800#, Centramatics
Silver Goose is offline   Reply With Quote
Old 03-24-2014, 04:35 PM   #10
Rivet Master
 
Silver Goose's Avatar
 
2008 27' Classic FB
Burkburnett , Texas
Join Date: Jul 2010
Posts: 955
Attachment 208203

I found this diagram, it may not be correct for your model furnace but is fairly representative of the Atwood line. You will see that the +12v line attaches to a terminal block at position 1. From there it feeds a switch. On my unit this switch is visible when the outside cover is opened and is in the lower left corner adjacent to where the copper gas line comes in. My observation from this diagram is that with the switch off, there will be no connection to the furnace but there will still be a connection to the thermostat. If you have the older style mechanical t'stat, it is functionally an open switch when the set point is below the room temperature. If you have a newer electronic model, there may be a small current draw to maintain the display. Hope this helps to identify if the furnace is the source of the drain.
__________________
AIR 47751
Air Safe Hitch, Reese Dual Cam 800#, Centramatics
Silver Goose is offline   Reply With Quote
Old 09-29-2014, 01:50 PM   #11
1 Rivet Member
 
2000 35' Land Yacht XL w/slide
pagosa springs , Colorado
Join Date: Aug 2013
Posts: 16
I've had the same problem (mystery battery drain), even when plugged into shore power. I keep a 3amp solar charger on it most of the time which works fine. If I disconnect it for 10 - 15 days battery goes dead. It finally dawned on me that the radio light is on all the time. So far haven't found the fuse to disconnect. Any thoughts?
__________________
wmd1931 is offline   Reply With Quote
Old 09-29-2014, 06:32 PM   #12
Ready to go campin?
 
wvabeer's Avatar
 
1992 33' Land Yacht
Evans , West Virginia
Join Date: May 2002
Posts: 349
Images: 49
I would think the radio light won't do that but it could. I went to the fuse box and took my multi meter , put it on amps then pulled each fuse and check for a draw the fuse that where the draw was was the furnace. I just pulled it till I needed it again. By the way I need to tell the new owner this too. Buy the way the refrigerator uses 12v when on so remember that too when useing it while camping.
__________________

__________________
92 Landyacht 33, 454 tag axle
wvabeer 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


Similar Threads
Thread Thread Starter Forum Replies Last Post
Storage Solutions: battery box and new made-to-open twin beds whitefawn All Argosy Trailers 5 12-19-2014 03:33 PM
Confused about battery drain checks bikeguy Batteries, Univolts, Converters & Inverters 8 11-14-2011 06:19 PM
Water heater battery drain Bohemian Batteries, Univolts, Converters & Inverters 5 10-27-2011 01:22 PM


Virginia Campgrounds

Reviews provided by




Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 09:27 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.