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Nest Thermostat, 2-Stage AC and the Y2 wire

fish_sauce
Community Member

I have a 2-stage AC system (AC only). It has the following wires - Rc, C, G, Y1, Y2.  According to the Nest Compatibility Checker, the regular Nest Thermostat should work with this system. The problem is the regular Nest Thermostat does not have a Y2 terminal. How is it supposed to work? Which terminal do I use for Y2?

1 Recommended Answer

fish_sauce
Community Member

Replying to myself. I dug a little deeper and found that the *O/B terminal  is programable and will function as the Y2 terminal in my situation.

Case closed.

View Recommended Answer in original post

4 REPLIES 4

Dancer
Community Member

fish_sauce
Community Member

Replying to myself. I dug a little deeper and found that the *O/B terminal  is programable and will function as the Y2 terminal in my situation.

Case closed.

MelbaDT
Community Specialist
Community Specialist

Hey folks, 

 

fish_sauce, thanks for posting and for keeping us in the loop of what you've done to have this resolved. Glad to hear that you've now got a thermostat that is working as it should with your HVAC system — give yourself a well- deserved pat on the back for a job well done! Let us know if anything comes up. 

 

Dancer, appreciate your response as well. 

 

Cheers, 

Melba

MelbaDT
Community Specialist
Community Specialist

Hey folks, 

 

We haven't heard from you in a while so we'll be locking this thread if there is no update within the day. If you have any new issues, updates or just a discussion topic, feel free to start a new thread in the Community.

 

Best, 

Melba