I've got a 2016 Discovery 40E with a RVComfort.ZC thermostat that has those rubbery buttons. I tried turning the furnace on this morning and the buttons refused to operate - I could press them, but nothing happened. Eventually, and after pulling the fuse for a few seconds, it came to life and I was able to get the zone 1 furnace turned on, but only after mashing the buttons for a while. I finally managed to get zone 2 on, but I cannot set the temperature. Now, I cannot even turn the system off.

Is this device "user serviceable"? Can I pop it off a wire-harness, open it, and clean some contacts? Or do I need to replace it?

So no responses - although the thermostat never achieved 100% performance, as it warmed up, the buttons became more responsive and we were able to control the gas furnaces and one of the heat pumps. I found the micro-air thermostat, I'll get one in about a week. If I can find tech specs about the control wires, I might build my own using a Wifi enabled MCU.

I got my micro-air thermostat and am waiting for some warmer weather to install it. I am puzzled by the "Sensor 1" and "Sensor 2" wires that I was told by micro-air I could ignore, but the manual says they connect to remote temp gauges. These two wires are in their own harness, so its a bit ... "confusing" as to what to do with them? Any suggestions?

2016 40E

Yes just ignore.

What Sensor 1 & Sensor 2 actually do

Those two wires are inputs for optional remote temperature probes.

They are used only if:

• You want the thermostat to read temperature from a remote location, such as
  – inside a refrigerator
  – inside a battery compartment
  – duct air temp
  – outdoor temp
  – or any other special monitoring point

Most RV owners never use these.