Help! I have a 3 zone home. One of our thermostats died last week, and I was able to swap the old Trane thermostat with the Nest Leaning gen. 3.
It works so well that I bought two more Nests for my other zone thermostats.
I thought the whole house was dual fuel but after switching out 8 wires on the first one, I see my next two thermostats have 10 wires. The app is telling me to contact support for compatibility.
Can someone here tell me if I can replace my old Trane thermostats with the Nest Learning? Or am I stuck with the old ones?
I have an orange X2, which I believe is the emergency heat, and a blue B wire, which I think in the common. The remaining wires are the same that were on the first thermostat I successfully swapped out with the Nest last week, with the exception of a brown Y2 which isn't on my other two thermostats.
I appreciate any insight and assistance you can provide.
Thank you!
