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Topic: Duo-Therm 4 Button Thermostat (Read 677 times) previous topic - next topic

Duo-Therm 4 Button Thermostat

My Duo-Therm 4-button used to control both Dometic A/Cs. I installed an Atwood up front along with its dedicated thermostat. I then moved the Duo-Therm to the bedroom where it controls only the rear unit. Just set it on Zone 2. Lately, the Duo-Therm has been letting me down. I'm pretty certain the problem lies with the on-off switch as I fool with it and the A/C turns off and on. A couple of years ago I refurbished the buttons so there's nothing more I can do there.

I had ordered a second Atwood but it looks like they are finally unavailable (maybe) so I cancelled the order. Instead, I would like to replace the Duo-Therm. I checked out Amazon (no dice except 5-button). Ebay has refurbished units for (get this) $150-$225!!! So here is my question:
Is it possible to use another model thermostat to control only the one Dometic A/C? Thanks.
jor

Re: Duo-Therm 4 Button Thermostat

Reply #1 –
The On-Off switch might just need to have the solder joints re-wetted. Also a good time to disassemble the switch and put a little dielectric grease on the slider, to ease it's movement. Fixed ours right up, along with tweaking the button contacts.

Greg

Re: Duo-Therm 4 Button Thermostat

Reply #2 –
I resoldered the pins through the circuit board for on/off switch  when I had problems with my A/C shutting off intermittently.  IT only too a few minutes.  It has worked fine since then.

Look closely at the solder joint on the circuit board.  It was clear that the solder was cracked at the board

Re: Duo-Therm 4 Button Thermostat

Reply #3 –
I'll be breaking out the solder. Thanks.
jor

Re: Duo-Therm 4 Button Thermostat

Reply #4 –
Reading this topic I took ours off the wall today  as the on off switch was sometimes  giving issues so I gave that switch a small shot of electrical lubricant and now it is working as should. No tripping off after turning it on
John
 

Re: Duo-Therm 4 Button Thermostat

Reply #5 –
Quote from: jor –
My Duo-Therm 4-button used to control both Dometic A/Cs....
Is it possible to use another model thermostat to control only the one Dometic A/C? Thanks.
jor

I have always received good information from Dometic by phone support. I would stay with one their avail switches. They will need the model number. available from inside removing only the vent cover, to know what switch will work with your unit.