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Replacing Dometic Cool Cat a/c with window-type a/c JRS 9-1-17  
Hi, I have a 2004 Roadtrek 190 Versatile with a non-working Cool Cat a/c. I've decided to replace it with a window-type a/c unit (the Cool Cat would cost substantially more to replace).

I've disconnected the Cool Cat (the 3 wires for the 110v, and the 12 pin connector). Now the the thermostat isn't getting power. I'd like to retain the thermostat to operate the propane furnace.

Is anyone aware of how to keep the thermostat working after the Cool Cat is disconnected? Thermostat is a Dometic LCD (electronic), model 3313193.

Thanks very much!
Re: Replacing Dometic Cool Cat a/c with window-type a/c Bubba The Bus Tech 9-1-17  
Ahh now I see your problem

The Dometic AC control box in the AC controls the furnace

Without the AC the furnace will not work using the AC thermostat.

You need to replace the AC thermostat with a simple Inexpensive Furnace only Thermostat.

You will find two wires coming from the Furnace and a bunch from the t-stat to the AC. The replacement T-stat gets wired to the two wires.

You can check furnace operation by tie-ing the two wires together, the furnace should start.

Good Luck
Re: Replacing Dometic Cool Cat a/c with window-type a/c Bubba The Bus Tech 9-5-17  
For $25 ?

It would work but why?

Good Luck
Re: Replacing Dometic Cool Cat a/c with window-type a/c JRS 9-2-17  
Hey Bubba, that makes a lot of sense... thanks!

Just a thought, do you think the following would also work? I could pull the control box out of the a/c (the a/c is junk anyway....) and just leave it connected. That way I could avoid replacing the thermostat?

Thanks again for your help!
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