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01-17-2018, 11:33 PM
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#1
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Junior Member
Brand: Thor Motor Coach
State: Nevada
Posts: 13
THOR #10433
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Thermostat upgrade
I am thinking about upgrading to digital thermostat in my Miramar motorhome and wanted any suggestion on what brand and part number I should use
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01-17-2018, 11:42 PM
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#2
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,123
THOR #7035
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Many Threads available by searching
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Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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01-17-2018, 11:46 PM
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#3
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Senior Member
Brand: Thor Motor Coach
State: Oregon
Posts: 911
THOR #2271
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I got lazy and bought the digital Coleman Mack from Amazon. Plug compatible and a 20 minute install.
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01-18-2018, 01:28 AM
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#4
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Senior Member
Brand: Thor Motor Coach
Model: Four Winds 28z
State: Florida
Posts: 401
THOR #5725
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What do u mean by plug compatible? I received one for xmas but haven’t put in yet
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01-18-2018, 01:36 AM
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#5
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Senior Member
Brand: Thor Motor Coach
Model: S.O.B.
State: California
Posts: 1,368
THOR #3483
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Quote:
Originally Posted by Djmacks
I am thinking about upgrading to digital thermostat in my Miramar motorhome and wanted any suggestion on what brand and part number I should use
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I bought the Coleman-Mach digital, same size as the one you presently have. Just matched the wire colors as the original was installed and it works fine.
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01-18-2018, 03:56 AM
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#6
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Senior Member
Brand: Thor Motor Coach
Model: Hurricane 35C
State: South Dakota
Posts: 1,132
THOR #3761
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Quote:
Originally Posted by axis earl
I bought the Coleman-Mach digital, same size as the one you presently have. Just matched the wire colors as the original was installed and it works fine.
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We did the same. 15 minute upgrade.
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John
2016 Thor Hurricane 35C with pups Piper and Annabelle
2013 Ford Fiesta toad
FMCA - F457085
Blog - https://traversity.us
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01-18-2018, 04:17 AM
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#7
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Senior Member
Brand: Thor Motor Coach
State: Oregon
Posts: 911
THOR #2271
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Quote:
Originally Posted by lazinskm
What do u mean by plug compatible? I received one for xmas but haven’t put in yet
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Like others have said. Just match the colors the same as your analog thermostat. Use the existing wire nuts. Even the holes in the wall are the same.
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01-19-2018, 01:02 PM
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#8
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Senior Member
Brand: Thor Motor Coach
Model: Challenger 37 LX
State: Florida
Posts: 307
THOR #7853
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Yesterday I installed 2 digtal stats that I got for Christmas in our Challenger. Coleman Mach is direct replacement. The thermostat controlling the heat uses all the wires, the other one doesn't use one wire. Most of the wires are the same colors, 2 were different. (white to blue, red to purple) .. Just switch one by one to the new stat.. Couldn't be any easier to do. As mentioned, the mounting holes are even the same. Took about 20 minutes to change both. Highly recommend.
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01-19-2018, 03:26 PM
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#9
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Senior Member
Brand: Thor Motor Coach
Model: 2017 Thor Vegas 25.2
State: Indiana
Posts: 301
THOR #7993
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Not trying to be a wise guy (for a change) but what do you gain by doing this?
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01-19-2018, 03:28 PM
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#10
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Site Team
Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,123
THOR #7035
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Quote:
Originally Posted by jb1911
Not trying to be a wise guy (for a change) but what do you gain by doing this?
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Better resolution as to where you have set the temperature and a digital temperature readout.
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Ted & Melinda
2016 ACE 27.1
2016 Chevy Sonic Toad - Selling
2020 Chevy Colorado Z71 Trail Runner Toad
2024 Chevrolet Trax 2RS - Soon 2B TOAD
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01-19-2018, 03:33 PM
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#11
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Senior Member
Brand: Still Looking
Model: Fleetwood Flair 31E
State: New York
Posts: 323
THOR #2025
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He gains happiness...that his rig is one step closer to being perfect for him[emoji4]
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Always Tinker
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01-19-2018, 03:35 PM
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#12
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Senior Member
Brand: Thor Motor Coach
Model: 2017 Thor Vegas 25.2
State: Indiana
Posts: 301
THOR #7993
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Quote:
Originally Posted by rvfigs
He gains happiness...that his rig is one step closer to being perfect for him[emoji4]
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I already knew that part.
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01-19-2018, 04:05 PM
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#13
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Axis/Vegas Enthusiast
Brand: Thor Motor Coach
Model: Axis 24.4
State: Michigan
Posts: 9,837
THOR #1150
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Quote:
Originally Posted by jb1911
Not trying to be a wise guy (for a change) but what do you gain by doing this?
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The digital thermostats have a shorter deadband and thus keep the temperature closer to the desired setpoint.
For example: The old analog thermostat may let the temperature fall 2 or 3 degrees before kicking the furnace on (and then allow the temperature to rise 1 or 2 degrees above the setpoint before turning off again).
The digital thermostats tighten that up only allowing the temp to fall about a degree before turning on the heat and turning it off slightly above the setpoint.
The consequences of this are that the RV is more comfortable to live in (the furnace will run shorter cycles with a digital thermostat).
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01-19-2018, 04:08 PM
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#14
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Senior Member
Brand: Thor Motor Coach
Model: Challenger 37 LX
State: Florida
Posts: 307
THOR #7853
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Quote:
Originally Posted by jb1911
Not trying to be a wise guy (for a change) but what do you gain by doing this?
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Good question..You can actually set the same exact temps for front and rear units instead of guessing on the sliding temp switch on the stock thermostat. Plus the temp. range goes from 33° to 99°. Had ours set at 35 last night since our low was upper 20's here last night. Stock thermostat cuts off at 55°. Not to mention you can easily see the present temp inside the coach. (No thermometer on stock thermostat). And what Jamie said...[emoji41]
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01-19-2018, 05:49 PM
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#15
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Senior Member
Brand: Thor Motor Coach
Model: Challenger 37LX
State: Florida
Posts: 315
THOR #6310
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Quote:
Originally Posted by RV Pirate
Good question..You can actually set the same exact temps for front and rear units instead of guessing on the sliding temp switch on the stock thermostat. Plus the temp. range goes from 33° to 99°. Had ours set at 35 last night since our low was upper 20's here last night. Stock thermostat cuts off at 55°. Not to mention you can easily see the present temp inside the coach. (No thermometer on stock thermostat). And what Jamie said...[emoji41]
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Excellent feedback, thank you! That upgrade is on our list. We are also in FL and 55 is exactly where we've had to set the current thermostat to prevent freezing. That dang furnace has been running a lot while sitting in our driveway, unoccupied. I have a digital thermometer on the kitchen table to monitor interior temps.
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01-19-2018, 09:31 PM
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#16
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Senior Member
Brand: Thor Motor Coach
Model: Challenger 37 LX
State: Florida
Posts: 307
THOR #7853
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Quote:
Originally Posted by BradnKaren
Excellent feedback, thank you! That upgrade is on our list. We are also in FL and 55 is exactly where we've had to set the current thermostat to prevent freezing. That dang furnace has been running a lot while sitting in our driveway, unoccupied. I have a digital thermometer on the kitchen table to monitor interior temps.
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Glad I could help. I heated up the coach to 55° last night, shut her down and set the temp at 35°. Went out there this morning at sunrise and it was 40° in the coach outside temp was 28° so it looks like it stayed warm enough that the heat never came on during the night. [emoji3]
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Work Like a Captain, Play Like a Pirate...
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02-03-2018, 05:23 PM
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#17
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Senior Member
Brand: Thor Motor Coach
Model: Four Winds 28z
State: Florida
Posts: 401
THOR #5725
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for those who made the switch, did you have a setting for fan only on the analog? if so, is there anyway to make just the fan run on its own with the coleman mack digital upgrade. i was going to install today but i couldn't figure out how the fan itself would run.
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02-03-2018, 09:22 PM
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#18
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Senior Member
Brand: Thor Motor Coach
Model: Challenger 37 LX
State: Florida
Posts: 307
THOR #7853
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Quote:
Originally Posted by lazinskm
for those who made the switch, did you have a setting for fan only on the analog? if so, is there anyway to make just the fan run on its own with the coleman mack digital upgrade. i was going to install today but i couldn't figure out how the fan itself would run.
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Switch the fan mode on the digital to "on". Fan speed switch on high or low.
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Work Like a Captain, Play Like a Pirate...
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02-03-2018, 11:39 PM
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#19
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Senior Member
Brand: Thor Motor Coach
Model: ACE 30.1
State: Colorado
Posts: 388
THOR #5190
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I’ve done it twice. First replacement was the Mach digital thermostat, but we found that we couldn’t see the settings in the dark, or even early in the morning.we set the temperature pretty low overnight, but I’m generally up first and need to increase the setting.
I upgraded again to a Honeywell as described by Ray of Love Your RV. The only extra thing is that you need to add an external fan hi/lo switch if you want to select fan speed selection. The link to his article and video is below. This thermostat runs off of batteries and is back lit. Works fine.
http://www.loveyourrv.com/rv-thermos...focuspro-5000/
External switch I used was ordered from Amazon
https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
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Rick
2017 Thor ACE 30.1
2017 Jeep Cherokee Trailhawk
Roadmaster Falcon All Terrain
RVi Brake 3
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02-04-2018, 11:55 AM
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#20
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Senior Member
Brand: Thor Motor Coach
Model: Challenger 37 LX
State: Florida
Posts: 307
THOR #7853
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Anyone who needs a pair of 2017 Coleman Mach analog thermostats in black, like new, PM me, Make offer. [emoji41]
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Work Like a Captain, Play Like a Pirate...
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