hancox wrote:So, finally getting around to installing my thermostat replacements (of course, when it turns colder...)
My upstairs Robert Shaw thermo has:
White --> W
Red --> R
Black --> B
...seems like an exact match to the TH4110D1007, so hopefully cake.
The downstairs Honeywell has:
White --> 4
Red --> 5
Black --> 6
...in the same general pattern. Is this just as easy? (ie R to R, W to W, B to B on the TH4110D1007?)
I'm keeping the MCS-DXB as-is, as it gives me a nice reason to replace my filter 2x a year.
So, I ended up hooking my 2 TH4110D1007's this way. No issues at all during heating season. (MCS-DXB and thermo switches turned to heat).
Now, I just tried a cooling test (on only the downstairs for now). MCS-DXB set to cool. The AC did not turn on with the TH4110D1007's set to cool. They did turn on when set to heat, and below temp (which sort of makes sense, given the former setup with dial thermometers). Only worry is - once the thermostat went back to "heat on" mode, the AC didn't shut off. I admittedly didn't try it for too long, so I might have just been impatient. Any chance I did something wrong here?