Google Nest Thermostat

[JMDD]

My thermostat has a red, white, blue and green wire and there is no yellow wire. How do I set up cooling? The heat works, but a cooling option doesn't appear on the screen.

[sterlinghawk]

Hi JMDD

1.  Do you know which version of the thermostat you have?

2.  Forgive me for asking concerning the cooling, do you have central AC at your house?

[TranquilaGCB]

I have this same issue. My HVAC (which has a furnace and central air conditioning) only has 4 wires: red, green, white, and blue. No additional wire to connect to Y so I don’t currently have Cooling Mode. Please advise! It’s getting very warm inside

[zoeuvre]

Hi folks, 

Thanks for reaching out to us, and I'm sorry to hear about the situation. 

Bumping the question from TranquilaGCB, what type of Nest thermostat do you have? Do you have central AC at your house? Also, did your previous thermostat control AC prior to switching to Nest? If not, then we highly recommend you contact your local HVAC technician to add an AC wire from your HVAC control board to the Nest Thermostat base. 

Let us know if you have any other questions. We're happy to help. 

I appreciate your help, @TranquilaGCB. 

Best,

Zoe

[zoeuvre]

Hi everyone,

I wanted to check and see if you managed to see the questions I asked. Please let me know if you have any questions from here. I would be happy to assist and make sure you are good to go.

Thanks,

Zoe

[zoeuvre]

Hi there, 

We haven't heard from you in a while, so we'll be locking this thread if there is no update within 24 hours. If you run into any more issues in the future, please feel free to create a new thread.
 

Regards,

Zoe

[TranquilaGCB]

I was able to figure it out. The wire in the C terminal was for my AC, so I put it in the Y terminal but now Nest is running on battery (because my HVAC only has 4 wires). I bought a Nest Power Connector to fix this issue but I haven’t installed it yet.

[zoeuvre]

Hey folks, 

@sterlinghawk, my apologies, but still, I thank you for your utmost help here.

@TranquilaGCB. thanks for the follow-up and I'm happy to hear that everything has been sorted out.

@JMDD, I hope you've already gotten the answer you're looking for. Please let us know if you still have questions or concerns, as we'll be willing to assist you further.

Best regards,

Zoe

[zoeuvre]

Hello everyone, 

I wanted to check 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.
 

Thanks,

Zoe

[zoeuvre]

Hey there, 

We haven't heard from you in a while, so we'll be locking this thread if there is no update within 24 hours. If you run into any more issues in the future, please feel free to create a new thread.
 

All the best,

Zoe

[sterlinghawk]

You got the members wrong, I was helping and the other two needed help