Help Gen 4 Nest replacing a Comfort net thermostat. Only has wires 1, 2, R, C

[Seb21]

 

 top photo is the thermostat. Bottom photo is the control panel.  Top to bottom 1, 2, R, C

any ideas which wires plug into the nest hub ports ?

thanks

seb

[thatgirlshel]

Hi Seb,

I imagine the wiring would be the same as the learning thermostat.  Red (power) wire to the Rc box, Green (fan) to the G box, Yellow (cool) to Y1, and white (heat) to W1.  I took a screenshot from within the Nest app of my wiring set up for you. 🙂

Hope this helps!

Shel

[Seb21]

Hi Shel,

Thank you so much for your response.

When looking at my wires there is current no yellow wire:

Just 

Black

White

Blue

Red

[Derickf]

Hi @Seb21,

I appreciate you taking the time to post in the community. I can totally answer the question you have about compatibility with the Nest thermostat. As I can see from the pictures you provided, your HVAC system seems to be a proprietary system, and it is not compatible with the Nest thermostat.

For more information, you can follow the next article, where you will find more information about the system you have: Nest thermostat compatibility. 

If you still need assistance, you can keep posting.

Regards,

Derick.