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Old 08-26-2016, 09:05 PM   #1
Akrap's Avatar
Join Date: Apr 2016
Location: Moses Lake Washington
Posts: 33
Digital thermostat replacement for Duo Therm??

Ok now I need to replace this badly. IT will reach temp but only it knows what it will be today. Then starts making sounds like it is shorting out. Finally at some point it will kick AC back on and control until it feels it needs to not do it any more. Any help would be well appriciated.


If you go with the flow, you miss too much.
Randy Pugh
Cadillac Escalade
Rockwood Roo 21SS
Moses Lake WA.
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Old 08-26-2016, 11:43 PM   #2
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Join Date: Jan 2007
Location: Camano Island, Washington
Posts: 11,170
I replaced the crappy OEM thermostat in my 2007 23SS, with a Honeywell thermostat I got at Walmart for $12.

It's been working fine for 10 years.
The only thing is you have to add a toggle switch if you want to run the low and high speeds.
I just wired it for high only.

There are tons of install videos/instructions on the Internet.
Many use a Hunter thermostat.

Dan-Retired Firefighter/EMT
Shawn-Musician/Entrepreneur/Wine Expert
and Zoe the Wonder Dog(R.I.P.)
'07 Roo 23SS pushing an '07 Chevy Avalanche
Equalizer WDH and Prodigy BC
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Old 08-27-2016, 06:13 AM   #3
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Join Date: Jun 2012
Posts: 4,890
Here's wiring for a Honeywell to a ColemanMach. Your colors may be different, but the letters should be more-or-less the same.
Attached Files
File Type: pdf Thermostsat wiring.pdf (121.6 KB, 47 views)
1988 Coleman Sequoia - popup (1987-2009) - outlasted 3 Dodge Grand Caravans!
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