09-28-2023 11:29 AM
10-01-2023 02:29 PM
Hi leolee,
Thanks for posting in the Google Nest Community forum. I'd like to check it further. Could you please take a photo of the wires connected directly to your system's control board? Share with us the make and model of your system. Also, do you happen to know the make and model of your system?
Here's how you can check your system's compatibility with the Nest Thermostats.
Best,
Jenelyn