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Old 06-10-2023, 06:00 AM   #1
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Brand: Thor Motor Coach
Model: Chateau 22B
State: New Mexico
Posts: 5
THOR #28734
Cool Coleman-Mach 13,500 BTU A/C Unit "Mach 3"

After much, painful research, I finally established that the Coleman-Mach air conditioner included with the 2021 Class-C Thor Chateau Model 22B is the 13,500 BTU, non-ducted Model "48203-0663" "Mach 3"

(Found on coleman-mach.com, in their "Air Conditioners" area, under "Quiet Series Mach 3: )

No Owners Manual is available at coleman-mach.com for this air conditioner.

The controls inside the RV for the Mach 3 are provided by the Coleman-Mach 9630-933 Ceiling Assembly. No Owners Manual is available at coleman-mach.com for this ceiling assembly.

Does anyone know where I can find an Owners Manual for either the 9630-933 Ceiling Assembly or the 48203-0663 Mach 3 Air Conditioner?

I'm trying to figure out why there are two control settings, both marked "Low Fan" and both make the same level of noise.

Does one "Low Fan" intake fresh, outside air and the other "Low Fan" recirculate the cabin air?

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Old 06-10-2023, 11:32 AM   #2
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Brand: Thor Motor Coach
Model: Windsport 32N
State: Arizona
Posts: 140
THOR #23246
If you have not done this, my suggestion would be to go to the Thor owners site and create an account using your VIN. Once you get online, go to the knowledge center and you will see a pull down that gives you access the manuals for the specific models and equipment that were installed in your motorhome. There is also a list of models and serial numbers there that would include the AC, almost certainly, so it would not have required painful research.

https://www.thormotorcoach.com/owners
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Old 06-10-2023, 12:13 PM   #3
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Brand: Entegra
Model: Accolade 37TS
State: South Dakota
Posts: 8,820
THOR #1469
Quote:
Originally Posted by tirebiter View Post
After much, painful research, I finally established that the Coleman-Mach air conditioner included with the 2021 Class-C Thor Chateau Model 22B is the 13,500 BTU, non-ducted Model "48203-0663" "Mach 3"

(Found on coleman-mach.com, in their "Air Conditioners" area, under "Quiet Series Mach 3: )

No Owners Manual is available at coleman-mach.com for this air conditioner.

The controls inside the RV for the Mach 3 are provided by the Coleman-Mach 9630-933 Ceiling Assembly. No Owners Manual is available at coleman-mach.com for this ceiling assembly.

Does anyone know where I can find an Owners Manual for either the 9630-933 Ceiling Assembly or the 48203-0663 Mach 3 Air Conditioner?

I'm trying to figure out why there are two control settings, both marked "Low Fan" and both make the same level of noise.

Does one "Low Fan" intake fresh, outside air and the other "Low Fan" recirculate the cabin air?
They’re Airexcel units. As requested.

The second Low Fan would be labeled heat or cool if you had a heat pump model. Since you don’t they do the same thing in 2 positions.

Airxcel 48000 Operation Manual.pdf
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Old 06-10-2023, 12:32 PM   #4
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Brand: Thor Motor Coach
Model: ACE 27.1
State: Florida
Posts: 14,617
THOR #7035
Dave got you the manual above and you can read that the second "Low Fan" position is for the optional Elect-A-Heat heating assembly kit. In the kit is a replacement knob where one of those positions becomes "Heat". Note this is an electric heating element and not a "Heat Pump" There is no heat pump option in this model of A/C.
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Old 06-10-2023, 12:51 PM   #5
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Brand: Entegra
Model: Accolade 37TS
State: South Dakota
Posts: 8,820
THOR #1469
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Originally Posted by 16ACE27 View Post
Dave got you the manual above and you can read that the second "Low Fan" position is for the optional Elect-A-Heat heating assembly kit. In the kit is a replacement knob where one of those positions becomes "Heat". Note this is an electric heating element and not a "Heat Pump" There is no heat pump option in this model of A/C.
My mistake. My living area 48000 series 15k unit does have an HP2 heat pump installed. That is not an option on the Mach 3 13.5 units like our bedroom unit. I am thinking about upgrading the rear unit to another 15k with heat pump.

It is however, the same manual for all 48000 series units.
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Old 06-11-2023, 05:33 AM   #6
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Brand: Thor Motor Coach
Model: Chateau 22B
State: New Mexico
Posts: 5
THOR #28734
Thanks much, CJ. This is our first motorhome so while we know RVs, we are newbies at all Thor-specific tricks!
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Old 06-11-2023, 05:35 AM   #7
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Brand: Thor Motor Coach
Model: Chateau 22B
State: New Mexico
Posts: 5
THOR #28734
Thank you kindly, EA37TS
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Old 06-11-2023, 05:39 AM   #8
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Brand: Thor Motor Coach
Model: Chateau 22B
State: New Mexico
Posts: 5
THOR #28734
Quote:
Originally Posted by 16ACE27 View Post
Dave got you the manual above and you can read that the second "Low Fan" position is for the optional Elect-A-Heat heating assembly kit. In the kit is a replacement knob where one of those positions becomes "Heat". Note this is an electric heating element and not a "Heat Pump" There is no heat pump option in this model of A/C.
Well, that explains why they have an extra click on the dial. Imho, it would have been better to double the "Off" setting rather than the "Low Fan" setting. No one would waste hours of their time trying to determine how "Off" differs from "Off" 😀
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