I just received my Wyze thermostat yesterday. I believe my furnace is single-stage, heat only. My current thermostat is battery powered with Rh, W, and G wires. Will the Wyze thermostat work if I install the included C-wire adapter?
Do you control your A/C with the same thermostat? Normally White is Heat, Green is Fan and Red is Your 24v supply. Yellow would be your A/C
We only have heat. No A/C.
I think you need 4 wires for the C wire adapter to work.
But check if you really need that G wire (fan). iirc, some furnaces will run the fan on their own without it. If that’s the case with yours, you may be able to use the green wiring as your C wire (connect both ends of the green wire to C terminals).
Thanks! I’ll look into that.
Did you have any luck with this? I’m in the exact same situation.
Do you have a photo of your furnace board?
This is mine, wall and furnace. I assume I can just run more furnace wire from the furnace to the board and make this work.
MAybe use G as C but have a jumper at the control board between G and W?
I resolved the issue by running all new 18/5 thermostat wire from the furnace to the wall panel.