Is my system compatible with nest?

[CristianG]

Hi guys, I was trying to update my thermostat but I have a problem with the wiring. I have 7 wires ( H1, H2, G, R, O, E, C) buy not Y. When I try to set the nest it said it got a missing Y wire. My old thermostats are working fine without that Y wire. Anybody knows what can I do? Thanks

[Patrick_Caezza]

Post a picture of the original thermostat's wiring here

[CristianG]

 

[Ryan_G]

Hey folks,

Thanks for visiting the Google Nest Community. 

Since this thread hasn't had activity in a while, we're going to close it to keep content fresh.

If you have additional questions, feel free to submit another post and provide as many details as possible so that others can lend a hand. 

Hope this helps!

Kind regards,

Ryan

[Patrick_Caezza]

Try this wiring

Green - G to G

Blue - C to C

Red - R to Rc

Yellow - W1 to Y1 (jumper to Y1 not needed)

Orange - O to OB

Black - E to */OB (set as Emergency heat)

White - W2 to W2

[Ryan_G]

Hey CristianG,

Thanks for reaching out and we're sorry for the delay.

We'd like to jump in here and check if you've seen Patrick_Caezza's response. You could try the wiring configuration and let us know how it goes by replying to this thread.

Thanks for your help, Patrick_Caezza.

Best regards,

Ryan

[Ryan_G]

Hey CristianG,

I just wanted to follow up and see if you're still in need of help. Please let us know as we would be happy to answer any questions you may have. 

Best regards,

Ryan