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Wiring issues

BJM1
Community Member

My old system has connections G, B, O, R, W, and Y.  I am unsure where the red wire in B should go and where the white wire in O should go.  Is the white in O a common wire (C)?  Should the red B wire go into O/B?

3 REPLIES 3

MelbaDT
Community Specialist
Community Specialist

Hi BJM, 

 

Thanks for posting and sorry for the delayed response. 

 

Could you post a photo of your old thermostat wires and provide the exact make and model of it? Also, you could try checking if your system is compatible with our Nest thermostat with our online Compatibility Checker.

 

Best, 

Melba

MelbaDT
Community Specialist
Community Specialist

Hey there, 

 

Checking back in — still need our help?

 

Best, 

Melba

Ryan_G
Community Specialist
Community Specialist

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