Nest Cooling Thermostat- Cooling not showing

[sailorshinde]

Hi, 

I moved from a Honeywell thermostat and I forgot to take a picture of the wiring. 

I have 4 wires:

Red- Placed in Rh

Green- Placed in G

Black - Placed in C 

White- Placed in W1 

Heating and fan works fine but the air-conditioner does not show on the thermostat. What could I have done wrong. 

[hmstanley · Accepted solution]

Oddly.. this just happened to me last week.. Instead of Black I have a blue one.. and that went into Y.  I'm also using the C-Adapter.. so this may not be helpful..

Here is my setup >

[zoeuvre]

Hi there. 

@sailorshinde, Thanks for posting here in Community, and I'm sorry to hear about the situation. Please send us a photo of your furnace control board where the other end of your thermostat wires are connected. I'll look forward to your response. 

@hmstanley, are you also getting no cooling mode showing up on the Nest Thermostat? If so, please let me know. 

Best,

Zoe 

[sailorshinde]

Thanks. I realized I had an issue with the c wire. I got the nest c connector and now everything works well. I now have the same wiring as @hmstanley 

[hmstanley]

Great!  Glad I could help.. when I first installed it, I did not use the blue wire as I thought I didn't need it.. but I definitely needed it.  Anyway, all works now!

[zoeuvre]

Hi everyone,

Great! I'm glad that everything has been sorted out. In the meantime, I'll go ahead and lock this thread within 24 hours. If you run into any more questions in the future, please feel free to create a new thread.

I appreciate your help, @hmstanley. 

Thanks,

Zoe