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Old 05-08-2017, 07:06 PM   #1
Thomas Pirelli
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Join Date: Apr 2017
Location: West Allis
Posts: 4
M.O.C. #19742
Duo-Therm thermostat

I have a Duo-Therm thermostat (serial #3107612.008 which is obsoleted)that is not functioning properly, in order to make the furnace kick on you have to put it on 90° it runs and cycles but the warmest it gets is 60°. Has anybody replaced theirs with a digital thermostat without any extra modifications I was told it would over $300 to have the thermostat replaced because it also needs an up-graded circuitboard for the AC.
Thermostat is in a 2004 Montana fifth wheel. Permanently parked

Any help will be greatly appreciated.
Thanks,
Thomas
 
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Old 05-08-2017, 07:28 PM   #2
kdeiss
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Join Date: Feb 2003
Location: Englewood
Posts: 3,095
M.O.C. #164
I replaced my Duro Therm in my 2002 Montana with a Hunter I purchased at Home Depot just connected a few wires. I had to add a seperate sw for high and low fan speed have been working great for al these years. I know you can not make this mod on the newer units because of the control box in the AC unit and circuit boards but I think you should be good to go with a 2004.
Google this Mod I know their is a vedio out ther with a step by step instructionsq
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