Nest thermostat gen 1 has 7 wire gen 3 only 6 please help !

[Nestgen1vsgen3]

I need conversion from nest gen 1 to nest gen 3 has only 6 wire and conflic y1 y2 oh ob and ob* and r and c ! 

[Jeran]

Hey there Nestgen1vsgen3,

Welcome to the Nest Community Forum! In your specific case, you would need to use a Nest Learning Thermostat, as the Nest Thermostat 2020 and the Nest Thermostat E do not have the required terminals for your setup. The Nest Learning Thermostat 3rd generation would have the same 10 terminal as the 1st generation one.

I look forward to your response, and if you have any other questions or concerns for me, please let me know!

Best regards,
Jeran

[Markjosephp]

Hi folks,

Thanks for assisting, Jake.

@Nestgen1vsgen3, I'm dropping by to see if you still need help. Please let us know if you have any other questions or concerns.

Best regards,

Mark

[Jhonleanmel]

Hi everyone,

Just one quick final check in here since activity has slowed down. We'll be locking the thread in the next 24 hours, but if you still need help, I would be happy to keep it open. If there's more we can do, just let me know.

Thanks,
Mel