06/11/2026
UPDATE: I ran new thermostat wire that had a c-wire. Once installed, the air conditioner began to work. The Amazon Smart thermostat did not like the external c-wire.
Over the winter, we replaced our old Nest thermostat with an Amazon Smart thermostat.
The heat worked over the winter. However, the air conditioner is not kicking on now that it is hot outside.
I've attached a photo of both the old setup and the new setup. I did add an external c-wire adapter to get the Amazon thermostat to work (the additional two white wires going into c and rc).
Any idea what i did wrong?