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Old 07-11-2016, 04:04 PM   #1
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Thermostat replacement

Hey folks. I have a Dometic thermostat, and A/c Analog single zone furnace and roof top A/C . Can I replace it with a battery powered thermostat and Toss this thermostat. The a/c has to cool to about 65 degrees while the thermostat is on 90. It's freeze or cook.model # 3107612-008 Thanks
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Old 07-11-2016, 05:42 PM   #2
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Yes I'll bet you can.
Here's an article with a stat just like yours being replaced. Think they're replacing it with a Hunter or Honeywell model. Not to expensive.
RV Digital Thermostat Installation / Duo-Therm and Suburban


Be mindful that depending on where the t-stat is located (exterior wall in hot sun) it may not reflect the temp in the core of the coach. Interior walls tend to be better choices. But I realize the wires are where they are.


Good luck
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Old 07-11-2016, 05:45 PM   #3
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I did just that. I found the instructions on the net. Google " changing Dometic themostat "

You only use 4 of the wires, unless you do the fan speed thing.

I use a $15 or $20 digital thermostat from Lowe's.

Works great, even without doing the low speed fan modification.
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Old 07-11-2016, 06:52 PM   #4
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Awesome. The analog stat is obsolete but has the circuit board in the stat. I have ordered 2 from Amazon but both need a circuit board . We are heading to Florida and will search one out. Thanks so much.
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Old 07-11-2016, 07:09 PM   #5
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I just finished doing mine. Went with a Honeywell. I did the fan hi/low switch install too. Works awesome. If you like I can tell you how much of a temp variation I have now between furnace cycles as I'm actually testing as I write this.
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Old 07-11-2016, 07:23 PM   #6
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Best mod I have done to date!

Quote:
Originally Posted by coachmendave View Post
Hey folks. I have a Dometic thermostat, and A/c Analog single zone furnace and roof top A/C . Can I replace it with a battery powered thermostat and Toss this thermostat. The a/c has to cool to about 65 degrees while the thermostat is on 90. It's freeze or cook.model # 3107612-008 Thanks
You'll just have to figure out which wire goes to what appliance(AC and furnace).

No more freeze and burn!
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