Wyze Thermostat Problem - Heat and Air are mixed up using recommended wiring

[speadie]

Do you have a heat pump? The switch hot / cold option is ONLY for people with a heat pump.
Are you using the common wire adapter? Incorrect use of this adapter will cause your AC to run when there is a call for heat.

I can help you troubleshoot your system, but you might want to read this thread if you are using the adapter.

Wyze Thermostat Wiring Issue

Thanks to comments here and elsewhere on the forum I was able to figure it out. What wasn’t clearly stated or shown in any diagrams was how it should look with the C adapter in place. Since the original Y Wire from my old thermostat was going directly to the AC compressor and not to the air handler, I had to split that connection and connect the wire that goes to the AC compressor directly to the air handler as @speadie mentioned. Then put the Y wire coming from the thermostat to the Y port …