I have installed the wyze thermostat and was never able to test the AC part because I assumed it was too cold and the heat was working fine.
I have 4 wires. original thermostat G W Y Rh-with jump to Rc. Original Furnace Y connected to C, W connected to W, R connected to R and G connected to G.
Based on wyze instructions I done the following Wyze Therm R to Rc, W to W1, Y to Y1 and G to C
Furnace now…Using C wire adapter (adapter connected to corresponding letter. Cwire adapter connected as such R-R W-W Y-Y G-G.
My old thermostat used two AA batteries, not sure if that means someone changed something on furnace. I put the old thermostat back on and AC kicks on fine, Now when on AC only the fan blows, compressor never kicks on.