I’m attempting to install the Wyze thermostat with a fairly old gas furnace. The current Honeywell thermostat has the following wiring:
W - White wire
G - Green wire
Rc - Red wire. Jumpered with R
Y - Empty
C - Empty
There is no Rh spot on the existing thermostat.
I purchased a plug-in 24v wall adapter to supplement since there is no C-Wire. Based on this video - https://youtu.be/gahPxCcPDto - and the Wyze setup I’m using the following connections to the Wyze board:
24v Adapter - into C and Rc (it has two wires)
Red - Rh
Green - G
White - W1
I attempted leaving the red unconnected and that did not work. I’ve tried switching the Red and one of the 24v wires (the Rc and Rh) and no luck either. In its current configuration the Wyze thermostat screen displays ‘Wyze’ but the app says the G wire is missing. Unfortunately, the board in the thermostat was bypassed and the Red/Green/White wires are straight wired into the furnace.
Any thoughts, advice, or references would be appreciated!