Followed the directions. I’m rather mechanical, but not an electrician or HVAC guy.
At first I was confused that I had a C-wire on the unit, but not the thermostat.
I guess that is not unusual.
It is about a 10 year old Amana gas furnace & AC.
Anyhow, I have pics of the before wiring:
Now the after wiring:
Get no power to the Wyze therm.
The furnace sounds to initially power up, get a click, at the furnace, then a red light comes on and silence.
Again, nothing on the Wyze therm.