Old thermostat works. Nest shows no power to RC

[Biggdaddy3456]

My old thermostat works completely fine. I disconnected it and plugged in the nest learning thermostat, and I'm getting the error that there is no power to the RC wire. I've checked all connections,  checked the system etc. I took off the nest thermostat and put back the old thermostat and it works totally fine.  I disconnected it once again and put back the nest thermostat, and then I get the same error again. I can't get this nest thermostat to work! Would anybody have any suggestions?

[MelbaDT]

Hey Biggdaddy3456, 

Thanks for posting and for trying those steps already. 

Could you post a clear photo of your old thermostat wires showing the terminal labels and another photo of how you wired your Nest Learning Thermostat? Also, what system do you have?

Best, 

Melba

[Ryan_G]

Hey everyone,

I'd like to jump in here and check if you've seen Melba's response. Let us know if you need more help by replying to this thread.

Thank you for your help, Melba.

Regards,
Ryan 
 

[Ryan_G]

Hey there,

Thanks for being here in the Google Nest Community. 

I'd like to bump in here and make sure that you’ve seen our response.
Please let us know if you have any other questions or concerns as I will be locking this thread in 24 hours.

Have a great day.

Best regards,
Ryan