Coleman Mach 9630A3361 Wall Mount Digital Thermostat-12 VDC, Single Stage, Black

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If your new thermostats requires 12 volts but does not use batteries then you will need the blue (-) wire. After finding a loose wire,I really thought I would not need it but the Hunter went south again today. Keeping all RVer's in mind, Coleman MACH has made it simple for larger RV's with multiple sources of heating and cooling to control it all by connecting to one single thermostat. My old thermostat did not have a plug connection so I had to cut it off and test the wires to be sure they were properly hooked up. The other set seemed to be folks going with an aftermarket t-stat, and just tucking the blue wire in the wall.

So, as I am learning more, I think what I am pondering is whether or not the blue has any purpose in the functionality of the A/C, or is it just there to close the loop on the t-stat.This Coleman Thermostat is simplicity at its best, providing complete control of your air conditioner, heat pump, gas, hydronic or electric strip heating and fans from one convenient wall thermostat.

The system utilizes a series of advanced heat sensing devices which track temperatures in each of the four zones and activate heating or cooling as needed to maintain the selected temperatures. Pair up to 3 Thermostats to a single smart device Connect up to 4 smart devices to control thermostat operations For iOS and Android devices iOS 9. I saw one thread where someone actually installed the exact same thermostat from an analog t-stat that already had A/C control. I did not use two of the wires from the existing trailer system to this new one which are for the hi/lo fan settings.We don’t share your credit card details with third-party sellers, and we don’t sell your information to others. The Easy Touch T-Stat brings modern touch screen and Bluetooth technology to your RV, making your RV living more comfortable. With the corresponding control kit packages, you can connect each source to this sleek and simple wall thermostat in no time.

Well won't go into the reasons, but we did not make the get away and the camper is back in the barn.

Coleman-Mach makes a diverse selection of wall thermostats to help keep you warm or cool you off while you're on the road. Oddly, my Mach Digital stat does not use the blue wire although it is dangling loosely inside the wall behind it. It wasn't too hard to install - just follow the instructions and look at the spec sheet online for the Honeywell. International products have separate terms, are sold from abroad and may differ from local products, including fit, age ratings, and language of product, labeling or instructions. I am in the process of installing one of the Airxel Circuit Boards that will allow me to connect my A/C to be thermostat controlled.