Nest thermostat 3rd generation wiring

[Stacia11]

 

 

 here are a few pictures of my old thermostat connected with the wiring.  My question is does anyone see a common wire?  If so can someone tell me which one it is?  I have bought the nest 3rd generation and I know that it will work without a common wire.  But if I do have a common wire It will work best if I connect the common wire to it.  Can someone please help me thank you so much.

[Patrick_Caezza]

@Stacia11 

Is this a heat-only system or a heat/cool system?

Are there any labels by the terminal block?

[Stacia11]

@Patrick_Caezza It is a heating/cooling system with fan.  Also I do not see any labels on my old terminal block.

[Jake]

Hey Stacia11,

Thanks for the helpful reply Patrick_Caezza.

I wanted to follow up and see if I could be of any help. I found an article that has more details on how to indetify a wire. Please let me know if you are still having any trouble from here, as I would be happy to take a closer look and assist you further. 

Best regards,
Jake

[Jake]

Hi Stacia11,

I wanted to check in and see if you are still in need of any help. Please let me know, as I would be happy to assist, and answer any questions you may have.

Best regards,
Jake

[Markjosephp]

Hello there,

Thanks for your assistance here, Jake.

@Stacia11, It has been a few days since your last reply, and we're going to lock the thread within 24 hours. If you have any questions, please feel free to create a new post.

Regards,

Mark