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Old 05-23-2012, 08:16 AM   #1
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Hardside A-Frame and thermostat upgrade

Has anyone here attempted or successfully changed out the analog thermostat in our A fames with a digital model?

I know many writeups on the web exist for this and know the Hunter digital model is a popular replacement, but most of these writeups dont address a unique difference we have in our A Frames, namely the choice of heat source, from the furnace or the heat pump/cool cat.

Maybe there is a dual-zone digital thermostat that would work in this application?

Any ideas you guys have would be helpful. I can live with the analog, but would prefer a digital for its ease of use and accuracy, hopefully reducing unnecessary recycling.
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Old 05-23-2012, 08:36 AM   #2
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There was some discussion of this last Fall but I'm not sure if it's been done yet. Evidently Dometic has a digital thermostat that's been showing up in some new FR models. I think it can accommodate having two sources of heat. I've lost any links I might have had to the website and I don't recall who first posted about the new thermo. Maybe you've already checked it out, tho...
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Old 05-23-2012, 08:43 AM   #3
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Yeah. I think it's this one, I may have even posted about it before and forgot... Dometic Single Zone Digital Thermostat

I see that I can get the version with Heat Pump in either black or white from RV Wholesalers for $28 without the control kit. I dont know if I need the control kit if I am just replacing their analog Thermo with the digital one.
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Old 05-23-2012, 10:27 AM   #4
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Rawlus:

I think you and I both talked a little about this. I hate the wide range of swing in temp with the analog thermostat. Running the heat pump set on say 65 lets the temp swing as much as 4 degrees on either side of the set point at 'sleeping level' which is about the same level in the camper as the thermostat.

$28 is super affordable for such an upgrade. My question is also about this 'control kit'. Not sure what that would be either. Might have to dig out my manual when I get home.
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Old 05-23-2012, 11:15 AM   #5
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Quote:
Originally Posted by rawlus View Post
Yeah. I think it's this one, I may have even posted about it before and forgot... Dometic Single Zone Digital Thermostat

I see that I can get the version with Heat Pump in either black or white from RV Wholesalers for $28 without the control kit. I dont know if I need the control kit if I am just replacing their analog Thermo with the digital one.
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We have that in our A128S. I currently have the microwave out for repair or exchange and will check the wiring to see if any kit or box is attached in the back of or near the controller.

So far, it has worked well for us. We used it in the fan only, cool, and heat pump modes.
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Old 05-23-2012, 02:07 PM   #6
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I think the ck triller will be on the ax unit itself. No room for a controller that size behind the thermostat based in what I saw on that site linked above.

I had my radio out a while back and it's tight in there and I saw no large silver box like the controller.

I suspect the controller is the same between the two thermostats, keyword 'suspect'.
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Old 05-23-2012, 06:11 PM   #7
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The "control kit" for the Analog one looks very similar to the control kit for the LCD one.

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Old 05-23-2012, 06:57 PM   #8
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I agree, they look similar. On the Dometic site all I can find is thermostat with control kit part numbers.

If a control kit is needed then its more cost and work than it would be worth IMO. Looks to be ~$100 or slightly more for both. I have no idea where the control kit goes, likely on the main Unit which means figuring out exactly where and how to get to it.
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Old 05-23-2012, 10:20 PM   #9
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I have an email in to Dometic to see what's up. I'll let you know what I here back.
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Old 05-23-2012, 10:47 PM   #10
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Thanks Rawlus. I'm super interested and was going to try a call tomorrow. I'll wait to see what you hear.
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