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10-12-2019, 04:41 PM
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#1
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Junior Member
Join Date: Oct 2019
Location: Livingston
Posts: 25
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I want to *disable* my furnace - how?
Howdy!
I never use my furnace and I don't want to turn it on, ever, including by mistake. Ain't want no fan, no heat, no flame!
Any idea how I can disable it? I thought maybe I could just disconnect a wire in the thermostat, but since there are only 3 it seems like that isn't the answer. Thermostat is a Dometic with 3 buttons - mode, plus, minus.
I don't see any circuit breaker or fuse labeled "furnace" or heat etc. that might do it.
Any suggestions?
Thanks
Charlie
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10-12-2019, 04:56 PM
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#2
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Senior Member
Join Date: Dec 2018
Location: grand rapids
Posts: 596
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Just don't turn it on...sorry, had to say that.
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10-12-2019, 05:00 PM
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#3
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Site Team
Join Date: Mar 2011
Location: Gaylord
Posts: 26,846
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^^^ what he said. When you think about it, most of us won't keep our RV "forever" and when it comes time to sell/trade it, having an operational heating system is a significant selling point.
If you don't use it, just don't turn it on, don't call for heat at the thermostat and it will be "inoperable". (or at least, "not operate")...
__________________
John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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10-12-2019, 05:03 PM
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#4
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,237
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Depending on make of furnace, if you can access the furnace there is an on/off switch.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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10-12-2019, 05:06 PM
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#5
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Senior Member
Join Date: Feb 2016
Location: SE Michigan
Posts: 1,659
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If there is not a devoted DC furnace fuse, another option is to gain access to the furnace itself and wire in a switch to the 12V line feeding the unit. This will keep the AC functionality intact.
I'm not sure why this needs to be done as the on/off switch "is" the thermostat. We never run the furnace from March to Sept and never "mistakenly" turn it on.
You could always remove the furnace altogether. Unfortunately, that will not help with resale value.
__________________
2017 Keystone Bullet 308BHS in Saddle.
2017 RAM 2500 Laramie Mega Cab 4x4 Hemi 6.4L
2008 GMC Yukon XL Denali (SOLD)
Hensley SwiftArrow Control Hitch with 1000 lb Spring Bars
Me, DW, (3) little DS's, and 1 rambunctious Boston Terrier
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10-12-2019, 05:10 PM
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#6
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Junior Member
Join Date: Oct 2019
Location: Livingston
Posts: 25
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Yes, thanks, I do realize that not turning it on will result in it not being on.
Sometimes people make mistakes, hence I don't to turn it on "including by mistake" (by me or others) in my original post. So I'd like it to be disabled.
A simple and reversible solution would be disconnecting a wire at the thermostat, but the unit doesn't appear to work that way.
So the question stands, is there a way to *disable* the furnace?
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10-12-2019, 05:13 PM
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#7
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Senior Member
Join Date: Feb 2016
Location: SE Michigan
Posts: 1,659
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Quote:
Originally Posted by ATXCharlie
So the question stands, is there a way to *disable* the furnace?
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Gain access to the furnace itself and wire in a switch to the 12V DC line feeding the unit. Or just cut and cap the wire. Permanent solution.
__________________
2017 Keystone Bullet 308BHS in Saddle.
2017 RAM 2500 Laramie Mega Cab 4x4 Hemi 6.4L
2008 GMC Yukon XL Denali (SOLD)
Hensley SwiftArrow Control Hitch with 1000 lb Spring Bars
Me, DW, (3) little DS's, and 1 rambunctious Boston Terrier
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10-12-2019, 05:15 PM
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#8
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Junior Member
Join Date: Oct 2019
Location: Livingston
Posts: 25
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Quote:
Originally Posted by chuckster57
Depending on make of furnace, if you can access the furnace there is an on/off switch.
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I'll investigate. If there's a dedicated on/off switch at the furnace, same as there is on my Suburban water heater, that would be perfect.
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10-12-2019, 05:17 PM
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#9
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Junior Member
Join Date: Oct 2019
Location: Livingston
Posts: 25
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Quote:
Originally Posted by busterbrown
Gain access to the furnace itself and wire in a switch to the 12V DC line feeding the unit. Or just cut and cap the wire. Permanent solution.
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Cut and cap would work for me. Looks like I have a project for tomorrow.
If I ever hand it off to someone else, I can reconnect the wires at that time.
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10-12-2019, 05:29 PM
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#10
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Senior Member
Join Date: Aug 2018
Location: Lake Stevens
Posts: 764
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I would run it at least each year to maintain it's operation condition. Chris
__________________
2019 Laredo 225MK for travel. Bighorn 3575el summer home in Washington, Park Model with Arizona Room for winters.
2015 RAM 3500 SRW CC SB Aisin Laramie
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10-12-2019, 05:53 PM
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#11
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Site Team
Join Date: Feb 2014
Location: W. Texas
Posts: 17,601
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I guess I'm a little confused over the worry of "someone" - "accidentally" turning on the furnace?? How could that happen unless they intentionally went thru the process of setting the thermostat then turning it on....when the temp would let it run? And, what would be the harm?
Obviously it's your call and you have your reasons but I think capping the leads and disabling the unit "forever" will only lead to issues, maybe severe, when you decide to "hand it off to someone". IMO it should be ran and serviced to assure proper operation over time. JMO/YMMV
__________________
Danny and Susan, wife of 56 years
2019 Ram 3500 Laramie CC SWB SB 6.4 4x4 4.10
2020 Montana High Country 331RL
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10-12-2019, 07:05 PM
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#12
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Senior Member
Join Date: Nov 2012
Location: Fruitland
Posts: 3,357
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A lot of work, to disable the furnace by doing more than not turning it on and if it was to come on by accident there is a switch already to take care of that. The same one that turned it on. But, its not me doing it. If the unit was removed no one could accidentally turn it on by connecting the wire you remove And you gain more storage and never ever worry about the furence ever coming on.
__________________
2013 24RKSWE (27ft TT) Cougar 1/2 ton series SOLD 10-2021
2013 Ford F350 4x4 CC 6.7 engine, 8 ft bed, 3.55 rear end, lariat package
Retired from Oregon State Police in 2011 than worked another 9.5 years as a small town traffic cop:
As of 05-2020, I am all done with 39 years total police work. No more uniforms for me.
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10-12-2019, 07:31 PM
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#13
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Senior Member
Join Date: Nov 2017
Location: Picacho, Az
Posts: 6,809
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I'm curious & no one else asked!
What could possibly be the necessity of "totally disabling" the furnace?
Afraid of a fire? Worried about LP expense?
Or just none of our business?
__________________
Full-timed 10+ years
Sold '13 Redwood FB
Traded '13 GMC Denali DRW D/A
Replacement undetermined
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10-12-2019, 07:37 PM
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#14
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,237
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Removing it would require capping the LP line, and at least the 12V positive wire. More work than just not turning it on at the thermostat.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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10-12-2019, 08:34 PM
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#15
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Site Team
Join Date: Jun 2009
Location: Venice
Posts: 5,346
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Should be on it's own line, pull the fuse and it's done. JM2˘, Hank
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Hank & Lynn
2007 Cougar 290RKS, E-Z Flex, 16" XPS RIBs ( SOLD .. Gonna miss her ... looking for new 5r)
2004.5 Dodge 2500 QC, LB, 5.9HO, WestTach gauges, Ride-Rite
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10-13-2019, 04:13 AM
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#16
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Site Team
Join Date: Oct 2011
Location: Joppa, MD
Posts: 11,714
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The "why" is not important, an autistic Child, a family member with dementias, doesn't matter.
I would suggest a thermostat lock box. Those are the plastic boxes hat fit over the thermostat to deter tampering like you see in an office or retail establishment. You can get them at the big box home improvement stores or on-line for under $20.
JM2CW
__________________
Marshall
2012 Laredo 303 TG
2010 F250 LT Super Cab, long bed, 4X4, 6.4 Turbo Diesel
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10-13-2019, 05:48 AM
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#17
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Senior Member
Join Date: Apr 2012
Location: Portland, OR
Posts: 4,180
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Quote:
Originally Posted by Roscommon48
Just don't turn it on...sorry, had to say that.
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Why is is the correct answer, there should be a switch on the T-Stat Heat, cool Off, just never turn it on.
The the OP why do you hate heat so much??
__________________
Russ & Paula and Belle the Beagle.
2016 Ram Laramie 3500 DRW 14,000# GVWR (New TV)
2005 Copper Canyon 293 FWSLS 32’ GVWR 12,360
Visit and enjoy Oregon State Parks
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10-13-2019, 07:35 AM
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#18
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Senior Member
Join Date: Dec 2018
Location: grand rapids
Posts: 596
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so, just disconnect the wires at the furance, not a big deal.
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10-13-2019, 07:35 AM
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#19
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Site Team
Join Date: Oct 2011
Location: Joppa, MD
Posts: 11,714
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Quote:
Originally Posted by rhagfo
Why is is the correct answer, there should be a switch on the T-Stat Heat, cool Off, just never turn it on.
The the OP why do you hate heat so much??
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He clearly stated that he did not want it turned on by mistake, the tstat allows that.
__________________
Marshall
2012 Laredo 303 TG
2010 F250 LT Super Cab, long bed, 4X4, 6.4 Turbo Diesel
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10-13-2019, 09:32 AM
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#20
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Senior Member
Join Date: Nov 2012
Location: Fruitland
Posts: 3,357
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My opinion, post #16 is the best answer, easy to do and the system can work when needed at some point.
__________________
2013 24RKSWE (27ft TT) Cougar 1/2 ton series SOLD 10-2021
2013 Ford F350 4x4 CC 6.7 engine, 8 ft bed, 3.55 rear end, lariat package
Retired from Oregon State Police in 2011 than worked another 9.5 years as a small town traffic cop:
As of 05-2020, I am all done with 39 years total police work. No more uniforms for me.
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