RV Trip Planning Discussions

Go Back   iRV2 Forums > RV SYSTEMS AND TECHNOLOGIES FORUMS > RV Systems & Appliances
Click Here to Login
Join iRV2 Today

Mission Statement: Supporting thoughtful exchange of knowledge, values and experience among RV enthusiasts.
Reply
  This discussion is proudly sponsored by:
Please support our sponsors and let them know you heard about their products on iRV2
 
Thread Tools Search this Thread Display Modes
 
Old 11-10-2019, 02:28 PM   #1
Senior Member
 
Thor Owners Club
Ford Super Duty Owner
Join Date: Mar 2019
Posts: 151
Thermostat replacement

I am trying to replace my Coleman Mach tstat with a Honeywell. I tried but nothing is coming. The wierd thing is I could not even get my back ac to come on and I did not touch it. Anyway wiring is as follows

Old tstat - coach
Green - green
Yellow - tiny red
Blue - tiny blue and white
Grey - yellow
White - white
Red - red


New tstat - coach
G - green
Y - tiny red
W - white
R - Red

Not hooked up
Tiny blue and white
Yellow

I had the tiny blue and white hooked up to blue but it did not work so I took it off.

I am thinking of flipping this and the red but not sure if that will help
__________________

__________________
Waldo
2005 Thor Four Winds Hurricane 33'
foundwaldo is offline   Reply With Quote
Join the #1 RV Forum Today - It's Totally Free!

iRV2.com RV Community - Are you about to start a new improvement on your RV or need some help with some maintenance? Do you need advice on what products to buy? Or maybe you can give others some advice? No matter where you fit in you'll find that iRV2 is a great community to join. Best of all it's totally FREE!

You are currently viewing our boards as a guest so you have limited access to our community. Please take the time to register and you will gain a lot of great new features including; the ability to participate in discussions, network with other RV owners, see fewer ads, upload photographs, create an RV blog, send private messages and so much, much more!

Old 11-10-2019, 02:30 PM   #2
Senior Member
 
Thor Owners Club
Ford Super Duty Owner
Join Date: Mar 2019
Posts: 151
Pic for referenceClick image for larger version

Name:	IMG_20191110_120256576.jpeg
Views:	7
Size:	67.4 KB
ID:	266447
__________________

__________________
Waldo
2005 Thor Four Winds Hurricane 33'
foundwaldo is offline   Reply With Quote
Old 11-10-2019, 02:52 PM   #3
Senior Member
 
Join Date: Nov 2015
Posts: 11,168
Honeywell

Red wire to “Rh” terminal (Rh and Rc utilize a jumper) 12V+
White wire to “W” terminal (12V TO furnace)
Yellow wire to “Y” terminal (Compressor)
Green wire to “G” terminal (A/C Fan)
Gray (not connected) (A/C Fan)
Blue (not connected) (Ground)






Green & Gray are A/C Fan...High/Lo Speeds
Can't remember which is which
May need to swap Gray for Green to have A/C Fan work in AUTO
May need to connect BOTH Gray/Green
???
__________________
Is it time for YOUR Medication or Mine?
Dodge 3500 w/Tractor Motor & NUWA 5vr
US NAVY---USS Decatur DDG-31
Old-Biscuit is offline   Reply With Quote
Old 11-10-2019, 03:01 PM   #4
Senior Member
 
cavie's Avatar
 
Join Date: Jul 2018
Posts: 1,980
you can not use the supplied wiring diagram. You must go to youtube and follow directions to make the swap.
__________________
2011 Keystone Sprinter BHS. Port Charlotte Fl/Hinsdale MA. Retired Master Electrician. All Motor homes are RV's. All RV's are not Motor homes.
cavie is online now   Reply With Quote
Old 11-10-2019, 03:34 PM   #5
Senior Member
 
Thor Owners Club
Ford Super Duty Owner
Join Date: Mar 2019
Posts: 151
Quote:
Originally Posted by Old-Biscuit View Post
Honeywell

Red wire to “Rh” terminal (Rh and Rc utilize a jumper) 12V+
White wire to “W” terminal (12V TO furnace)
Yellow wire to “Y” terminal (Compressor)
Green wire to “G” terminal (A/C Fan)
Gray (not connected) (A/C Fan)
Blue (not connected) (Ground)






Green & Gray are A/C Fan...High/Lo Speeds
Can't remember which is which
May need to swap Gray for Green to have A/C Fan work in AUTO
May need to connect BOTH Gray/Green
???
I connected all wires exactly as they were before except the tiny yellow which was connected to the grey on the old stat. And there was a white and blue which were connected to the blue on the old stat. Now the tiny red was connected to the yellow on the old stat so I connected it to the Y on the new one.


Also I have watched several YouTube videos some are saying to connect the old ground instead of the old positive.
__________________
Waldo
2005 Thor Four Winds Hurricane 33'
foundwaldo is offline   Reply With Quote
Old 11-10-2019, 04:05 PM   #6
Senior Member
 
Join Date: Feb 2015
Location: Texas
Posts: 206
Quote:
Originally Posted by cavie View Post
you can not use the supplied wiring diagram. You must go to youtube and follow directions to make the swap.
Why the rv AC makers just couldn't use the typical residential wiring colors is baffling.
You can google the old tstat wiring but use both model & series or it might be wrong. I have read of guys adding a 2 position micro switch so you can have the 2 fan speeds, easy cheesy
1960C182 is offline   Reply With Quote
Old 11-10-2019, 04:12 PM   #7
Member
 
Join Date: May 2014
Location: Riverview N.B.
Posts: 70
I'm having a similar problem. My furnace would not start. Wiggle the control toggles on thermostat a bit and away it went.Shut it off and now nothing again even with wiggles .Switch set on heat the fan "on" turns on fan on ac not furnace. Suspect bad thermostat. Mine is older Dou therm with switches and slide . Is there wires I can jumper to see if the problem is furnace or stat. Wires on stat are identified green ground,blue and brown fan and high fan white as furnace yellow as cool, red 7.5v.
roddie is offline   Reply With Quote
Old 11-10-2019, 04:37 PM   #8
Member
 
Join Date: May 2014
Location: Riverview N.B.
Posts: 70
Another question is can a residential tstat designed for 24 volt work on a 12 volt system .
roddie is offline   Reply With Quote
Old 11-10-2019, 06:04 PM   #9
Senior Member
 
Join Date: Jul 2014
Posts: 19,663
Quote:
Originally Posted by roddie View Post
Another question is can a residential tstat designed for 24 volt work on a 12 volt system .
The residental TStats we are using don't need power. They are run by AA batteries.
twinboat is offline   Reply With Quote
Old 11-10-2019, 08:47 PM   #10
Senior Member
 
Join Date: Feb 2015
Location: Texas
Posts: 206
Quote:
Originally Posted by roddie View Post
I'm having a similar problem. My furnace would not start. Wiggle the control toggles on thermostat a bit and away it went.Shut it off and now nothing again even with wiggles .Switch set on heat the fan "on" turns on fan on ac not furnace. Suspect bad thermostat. Mine is older Dou therm with switches and slide . Is there wires I can jumper to see if the problem is furnace or stat. Wires on stat are identified green ground,blue and brown fan and high fan white as furnace yellow as cool, red 7.5v.
Roddie ,Red to white should bring on furnace .
To OP, terminal GH/green is hi fan, GL/ grey is low fan on Coleman/airexcell on most of their tstats & these are for AC not furnace
1960C182 is offline   Reply With Quote
Old 11-11-2019, 01:39 PM   #11
Member
 
Join Date: May 2014
Location: Riverview N.B.
Posts: 70
new t stat wiring

Thanks .Seems my problem was not the stat. Unpluged and repluged all the connections on the (atwood furnace). They all looked good but jumped it again after and away it went. I went ahead and replaced the stat anyway as the plastic on /off tab broke.It is now working fine with a Honeywell RTH111.I am attaching the wiring I used with interior toggle toward gas furnace. First are dometic stat. third is new stat.
Attached Thumbnails
Click image for larger version

Name:	bare orig.jpg
Views:	13
Size:	168.6 KB
ID:	266561   Click image for larger version

Name:	wired original.jpg
Views:	6
Size:	190.4 KB
ID:	266562  

Click image for larger version

Name:	20191111_145847_HDR.jpg
Views:	7
Size:	133.6 KB
ID:	266563  
roddie is offline   Reply With Quote
Old 11-11-2019, 06:31 PM   #12
Senior Member
 
Isaac-1's Avatar
 
Join Date: Jun 2016
Location: SW Louisiana
Posts: 3,747
Roddie, you just posted photos of a Dometic / Duotherm Analog thermostat as well as a Honeywell, this thread was talking about wiring a Coleman Mach system
__________________
2002 Safari Trek 2830 on P32 Chassis with 8.1L
Isaac-1 is offline   Reply With Quote
Old 11-11-2019, 06:49 PM   #13
Member
 
Join Date: May 2014
Location: Riverview N.B.
Posts: 70
Please accept my apologies. Not sure how to withdraw it .
roddie is offline   Reply With Quote
Old 11-12-2019, 05:50 PM   #14
Senior Member
 
Join Date: Feb 2015
Location: Texas
Posts: 206
Quote:
Originally Posted by twinboat View Post
The residental TStats we are using don't need power. They are run by AA batteries.
You can get a 12V D.C. To 3v D.C. Transformer & connect to the tstat battery terminals . These are small & could be set in the wall. No more $ than the Coleman digital stats are I don't see a reason to do all these extra mods to residential tstats unless you just have to have programming or auto change.
__________________

1960C182 is offline   Reply With Quote
Reply

Tags
ace, replace, replacement, thermostat



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
Replacing Duo-Therm thermostat with Hunter thermostat tpcollins Class A Motorhome Discussions 4 10-02-2018 03:10 PM
Remote thermostat for roof air residential thermostat swap?? supertramp Travel Trailer Discussion 6 01-12-2017 09:39 PM
Upgrade Duo-Therm thermostat to a Honeywell RTH230B Thermostat Ray Wallace RV Systems & Appliances 7 12-07-2009 09:22 PM
Furnace/Fantastic Fan Thermostat replacement CC38EL Winnebago Industries Owner's Forum 2 11-22-2005 05:18 AM
Propane thermostat vs. True-Air electronic thermostat John_Canfield Winnebago Industries Owner's Forum 5 10-18-2005 03:32 AM

» Featured Campgrounds

Reviews provided by


Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -6. The time now is 04:59 AM.


Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2019, vBulletin Solutions, Inc.
×