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06-18-2019, 10:29 PM
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#1
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Member
Join Date: Sep 2018
Posts: 58
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Installing a new Thermostat
I have a 2005 Forest River Cardinal. It has an what I call an old style thermostat. I'm wanting to install a new digital thermostat, but I'm unsure if it will work or not. Is the thermostat in these campers a 24volt or what? When I ordered the new thermostat it said it would work in an RV. Is there any one out there that can give me some insight please? I've attached a couple of pictures with the stats on the new thermostat. Thanks in advance.
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06-18-2019, 10:49 PM
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#2
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Senior Member
Join Date: Jun 2016
Posts: 5,037
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I suspect that you will have to run that stat on batteries. It's my understanding that RVs run on 12 volt.
FWIW, I replaced my Coleman-Mack analog thermostat with a Coleman-Mack Digital. Was a wire for wire replacement and works well. Doesn't have as wide a temp swing between cycling on/off on both heat and cool settings.
My original looked like this one:
https://www.campingworld.com/thermos...20group%20%231
The replacement looks like this one, not sure it is the exact one I used: https://www.amazon.com/gp/product/B0...odtag104471-20
__________________
Al
I am starting to think, that I will never be old enough--------to know better.
Tolerance will reach such a level that intelligent people will be banned from thinking so as not to offend the imbeciles. Fyodor Mikhailovich Dostoevsky, Russian Novelist
S.E. Mich. Flagstaff 26FKWS / 2022 F-150 3.5 EcoBoost SCrew Propride
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06-19-2019, 08:41 AM
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#4
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Senior Member
Join Date: Aug 2013
Posts: 7,916
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The 24V is A/C from the furnace/unit and not "generated" by the stat. Some/most digital stats use the 1.5V batteries to make the switches, operate the light and display and hold the settings...if applicable.
I personally prefer an RV stat as you have full function with the fan, but others may not. I think some of the newer units may not function with a "universal" stat. JMO
__________________
2017 Puma 297RLSS
2005 Ram 2500 4X4 diesel SMOKER!!
I love puns, irony and tasteless jokes...
born in Texas.... live in Arkansas
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06-19-2019, 09:44 AM
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#5
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Member
Join Date: Sep 2018
Posts: 58
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Quote:
Originally Posted by Wiscampsin
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Thanks for your help. This is good information.
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06-19-2019, 09:44 AM
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#6
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Member
Join Date: Sep 2018
Posts: 58
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Quote:
Originally Posted by Iwannacamp
The 24V is A/C from the furnace/unit and not "generated" by the stat. Some/most digital stats use the 1.5V batteries to make the switches, operate the light and display and hold the settings...if applicable.
I personally prefer an RV stat as you have full function with the fan, but others may not. I think some of the newer units may not function with a "universal" stat. JMO
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Thanks for your help.
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06-19-2019, 09:57 AM
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#7
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Site Team
Join Date: Mar 2008
Location: Southwest Alabama
Posts: 9,850
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That thermostat should work with your unit. However, to be any kind of specific help we'll need to know the make and model of the old thermostat. Is it a Dometic or Coleman?
Dometic systems are funny in that they switch the negative wire instead of the positive wires.
I can't find a copy of the manual for it online, but if you can post a copy of it, or a link to where I can find it I'll be happy to help you figure out how to wire it.
__________________
Salem 29RKSS Pushing a GMC Sierra 2500HD!
Gotta go campin!
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06-19-2019, 10:03 AM
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#8
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Member
Join Date: Sep 2018
Posts: 58
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Quote:
Originally Posted by Bama Rambler
That thermostat should work with your unit. However, to be any kind of specific help we'll need to know the make and model of the old thermostat. Is it a Dometic or Coleman?
Dometic systems are funny in that they switch the negative wire instead of the positive wires.
I can't find a copy of the manual for it online, but if you can post a copy of it, or a link to where I can find it I'll be happy to help you figure out how to wire it.
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Thanks, it's a Dometic Duo-Therm.
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06-19-2019, 10:03 AM
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#9
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Senior Member
Join Date: Jun 2012
Posts: 10,907
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You'll need to run it on battery power. Your trailer won't have 24v available.
__________________
1988 Coleman Sequoia - popup (1987-2009) - outlasted 3 Dodge Grand Caravans!
2012 Roo19 - hybrid (2012-2015)
2016 Mini Lite 2503S - tt (2015 - ???)
2011 Traverse LT, 3.6L, FWD
2009 Silverado 1500 Ext Cab, 5.3L, 4x4, 3.73
2016 Silverado 2500HD Dbl Cab, 6.0L 4x4, 4.10
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06-19-2019, 12:23 PM
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#10
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Site Team
Join Date: Mar 2008
Location: Southwest Alabama
Posts: 9,850
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Can you post a pdf or picture of the wiring diagram in the manual for the H701 thermostat. It's the one I can't find online.
However, it should hook up pretty much like the diagram below.
__________________
Salem 29RKSS Pushing a GMC Sierra 2500HD!
Gotta go campin!
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06-19-2019, 12:52 PM
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#11
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Senior Member
Join Date: Apr 2012
Location: Eastern Pa
Posts: 134
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Digital Thermostat in RV
I can't see your unit well, but I have installed conventional digital home thermostats in several RV's. MUCH improved performance and temperature control.
The main difference is that the household thermostat is normally operated by internal batteries, so does not need the RV 12 volt for operation.
I'm sorry, but I no longer have the reference diagrams, but the main difference I recall is no 12V ground or neutral connection since thermostat operating power is internal.
Other connections then become simple on/off switches for the furnace and AC control circuits. Sometimes you will have to forgo AC fan speed control.
Do a google search for digital thermostats in RV's and you should find a wiring diagram.
Might be a minor hassle to install, but you will be pleased with the result.
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06-19-2019, 02:45 PM
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#12
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Member
Join Date: Apr 2016
Location: TN/TX
Posts: 60
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Dometic makes a digital thermostat conversion kit too, for converting analog to digital
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06-19-2019, 07:27 PM
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#13
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Senior Member
Join Date: Jan 2018
Location: Raleigh, NC
Posts: 9,458
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24 Vac
Quote:
Originally Posted by Iwannacamp
The 24V is A/C from the furnace/unit and not "generated" by the stat. Some/most digital stats use the 1.5V batteries to make the switches, operate the light and display and hold the settings...if applicable.
I personally prefer an RV stat as you have full function with the fan, but others may not. I think some of the newer units may not function with a "universal" stat. JMO
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24Vac is only in Park Models.
Larry
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06-19-2019, 09:52 PM
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#14
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Senior Member
Join Date: Aug 2013
Posts: 7,916
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Quote:
Originally Posted by Larry-NC
24Vac is only in Park Models.
Larry
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Referring to the OPs first post
__________________
2017 Puma 297RLSS
2005 Ram 2500 4X4 diesel SMOKER!!
I love puns, irony and tasteless jokes...
born in Texas.... live in Arkansas
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07-02-2019, 03:18 PM
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#15
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Member
Join Date: Sep 2018
Posts: 58
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Thanks goes out to everyone who replied to my post. I successfully installed the thermostat I was referring to, using the information that I received from y'all. It works great. I even added the high speed fan switch to it. Thanks again!!!
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07-02-2019, 03:43 PM
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#16
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Senior Member
Join Date: Jun 2012
Posts: 10,907
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Quote:
Originally Posted by orabun
Thanks goes out to everyone who replied to my post. I successfully installed the thermostat I was referring to, using the information that I received from y'all. It works great. I even added the high speed fan switch to it. Thanks again!!!
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You're welcome!
__________________
1988 Coleman Sequoia - popup (1987-2009) - outlasted 3 Dodge Grand Caravans!
2012 Roo19 - hybrid (2012-2015)
2016 Mini Lite 2503S - tt (2015 - ???)
2011 Traverse LT, 3.6L, FWD
2009 Silverado 1500 Ext Cab, 5.3L, 4x4, 3.73
2016 Silverado 2500HD Dbl Cab, 6.0L 4x4, 4.10
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07-02-2019, 05:40 PM
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#17
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Senior Member
Join Date: Feb 2012
Location: Wisconsin
Posts: 13,709
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Quote:
Originally Posted by orabun
Thanks goes out to everyone who replied to my post. I successfully installed the thermostat I was referring to, using the information that I received from y'all. It works great. I even added the high speed fan switch to it. Thanks again!!!
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08-15-2019, 12:04 AM
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#18
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Senior Member
Join Date: Aug 2019
Location: Racine, Wisconsin
Posts: 172
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Quote:
Originally Posted by Wiscampsin
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I had that thermostat installed on my Jayco I traded for. Runs on 2 AA and comes with a cool remote. [emoji16]
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