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Old 09-16-2015, 06:40 PM   #1
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Thermostat issue

Had to use the furnace for the first time this past weekend in our Encounter 37LS. Set the thermostat to 70, it fired up and shut off at 62. Didn't realize it at first but we were still chilly. Bumped it up to 75, it starts up and shuts off at 65. I have the Dometic single zone thermostat to control the AC and furnace. Looked up the manual for it. I did a reset of the thermostat and checked to make sure the temperature differential was set to 2 degrees. Started it up again with it set at 75. Went to 65 and shut off.

We finally figured out why it's doing this. The thermostat is mounted on an inside wall that is used for the half bathroom. In the half bath is a floor heat vent. That vent just barely goes past the wall. When the heat comes on that vent is heating the wall, almost overheating it, causing the thermostat to think its warmer in the coach than it really is.

So, aside from leaving the bathroom door open or shutting the register off, any ideas to insulate the thermostat or move is somewhere? It's a little problem that really doesn't need to be fixed but it will bug me if I don't.

Thanks
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Old 09-16-2015, 06:55 PM   #2
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Replace it with a digital one. That's probably your REAL issue.

I used a Honeywell RTH111, but there are lots of others. Do a search on digital thermostat.

Here's one of many:

Honeywell RTHL111B thermostat replacement
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Old 09-16-2015, 07:10 PM   #3
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Quote:
Originally Posted by rockfordroo View Post
Replace it with a digital one. That's probably your REAL issue.

I used a Honeywell RTH111, but there are lots of others. Do a search on digital thermostat.

Here's one of many:

Honeywell RTHL111B thermostat replacement
I have a 2015 Coachmen. It has this Dometic thermostat, already digital.

http://www.amazon.com/Dometic-331319.../dp/B00C9OEZK6

I wish that there was an upgrade from this thermostat. I'd love to be able to use one of the newer home thermostats that is WIFI enabled. We'd be able to adjust the temperature or turn the AC on or off from the cab area.

Wishful thinking I guess.
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Old 09-16-2015, 07:53 PM   #4
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Quote:
Originally Posted by Schwartzworld View Post
I have a 2015 Coachmen. It has this Dometic thermostat, already digital.

http://www.amazon.com/Dometic-331319.../dp/B00C9OEZK6

I wish that there was an upgrade from this thermostat. I'd love to be able to use one of the newer home thermostats that is WIFI enabled. We'd be able to adjust the temperature or turn the AC on or off from the cab area.

Wishful thinking I guess.
You probably can. Most of these all turn on the power to the same wires.
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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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