Replace Duo Therm 4 button thermostat

[Bob Stevens]

Is there any replacement for Duo Therm 4 button thermostat?

mine is extremely hard to switch from zone 1 to zone 2. It bounces all over the place. It is a very poor design. 

[John Haggard]

I replaced my 4 button with this.

 

I also exchanged one on the internet for about $200.

 

So I still have a 4 button rebuilt, new. 

[Bob Stevens]

What kind of cost for the digital one?

any rewireing?

how much for the new old style one?

[DJR1SR]

Interested with this setup as well. My coach is a 1999 Monaco Diplomat. 

[vito.a]

Your thermostat version must match your A/C control board version.  To use a new generation programmable thermostat you must also install new A/C units.  Your current RJ11 cables (phone style) will work with the newer units.  

Dometic used to sell a conversion control board so you could install the slightly newer 5 button thermostat on the older 4 button A/C units.  They have since moved on to an even newer generation with a programmable thermostat, so the old 5 button conversion boards may be difficult to find.  

You can rebuild the 4-button thermostat or send it in and have it rebuilt.  

Frerichs Electronics

Or here: REPAIR SERVICE of YOUR Duo Therm 4 Button Thermostat Dometic Part# 3106463007 | eBay

Edited April 3, 2021 by vito.a

[John Haggard]

The exchange for a refurbished 4 button one was about $200.

As I recall.

 

Call ppl parts for info on the new dometic 

[Bob Stevens]

Great I’ll give it a try

[RVSSNAKE]

I took ours apart cleaned and adjusted the contacts and that was two years ago and been fine every since.

[John Haggard]

19 minutes ago, Bob Stevens said:

Great I’ll give it a try

This is the refurbished unit I exchanged from an internet search. 

 

[Bob Stevens]

Okay, I took it apart and cleaned the switch contacts and it seems to be working great. 
if you do this watch out tiny springs and the contacts are springy too. 
took me about 15-20 minutes total

may have saved my sanity. 

i used alcohol to clean them. 

[John Haggard]

3 hours ago, Bob Stevens said:

Okay, I took it apart and cleaned the switch contacts and it seems to be working great. 
if you do this watch out tiny springs and the contacts are springy too. 
took me about 15-20 minutes total

may have saved my sanity. 

i used alcohol to clean them. 

You made yourself $200. In 30 minutes 😃

[Bob Wightman]

You can buy the replacement microswitches (on eBay as I remember) for about $20 bucks.  I replaced them on my last RV and it fixed the problem...and thats what they do when they "Rebuild" them.  Took me about 30 minutes total to replace the 4 microswitches using a standard pencil tip soldering iron, solder wick, and radio/TV (thin gauge) solder.  

 

[DJR1SR]

John,

The digital control panel P/N 3314082000 that you used as a replacement, is that a direct replacement for the 4 or 5 button control center? I have the 5 button control panel (P/N 3109228.001) and would like to upgrade to the digital control panel. However as Vito pointed out, is the digitial control panel compatible with the AC control board in my 1999 Monaco? Any information you may provide is greatly appreciated. Thank you

Dennis

[John Haggard]

1 hour ago, DJR1SR said:

John,

The digital control panel P/N 3314082000 that you used as a replacement, is that a direct replacement for the 4 or 5 button control center? I have the 5 button control panel (P/N 3109228.001) and would like to upgrade to the digital control panel. However as Vito pointed out, is the digitial control panel compatible with the AC control board in my 1999 Monaco? Any information you may provide is greatly appreciated. Thank you

Dennis

This is compatible with the 4 wire cable

And 4 button thermostat. 

I called PPL parts and they called Dometic as I recall. 

Maybe 12 to 18 months ago.

This is my front living area.

[fredelkamp]

I replaced my 4 button with the EasyTouch RV Thermostat from Micro-Air. A great upgrade with bluetooth and wi-fi, I love it.

EasyTouch RV Thermostat

[RVSSNAKE]

17 hours ago, John Haggard said:

This is compatible with the 4 wire cable

And 4 button thermostat. 

I called PPL parts and they called Dometic as I recall. 

Maybe 12 to 18 months ago.

This is my front living area.

Do you have the original A/C units? Did you have to change out your boards on the units for the new thermostat to work?