Compatibility

[Prfssr]

I currently have a Trane Thermostat. I removed the cover, took a photo of the wiring diagram and went to the Nest compatibility chart.  I have 2 legs of terminals - 7 wires on the left side and one on the right. The following is on the left terminals and a single BROWN wire on the right - see below.

Blue = O

Red = R

White = W1

Black = W2

Orange = O/B

Green = G

Yellow = Y1

RIGHT SIDE  is Brown = BK

The BK is nowhere to be found on the compatibility chart. Any help is appreciate if the Nest 3rd generation is compatible.

Thanks, Mark

[Patrick_Caezza]

BK wire is for dehumidification. Trane's thermostat will lower the fan speed by 30% when the temperature is getting closer to the set point, but the humidity level has not reached the humidity set point.

Nest won't support this feature, so cap it and push the wire into the wall.

[Prfssr]

Patrick - thanks for the reply. When I do the compatibility and use only the 7 wires on the left and remove the BK - it still tells me to chat or call NEST and of course I can't get on even though they same I am number one in line.  Any suggestions?

[Patrick_Caezza]

Can you post a picture of your current thermostat wiring?

[Prfssr]

Is there a separate email I can send the photo to? It will not let me upload my photo here for some reason as there is no option for "insert"

[Jenelyn_O]

Hi there,

Thanks for posting in the Google Nest Community forum. I'm sorry for the delay. I just want to follow up if you still need help. Please check this support article to get more information about compatibility. 

I appreciate your help, @Patrick_Caezza.

Best,

Jenelyn

[EmersonB]

Hi everyone,

@Prfssr, we wanted to follow up and see if you are still in need of any help. Please let us know if you are still having any concerns or questions from here, as we would be happy to take a closer look and assist you further.

I appreciate the help, Patrick_Caezza and Jenelyn.
 
Regards,
Emerson

[Jenelyn_O]

Hi folks,

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 need assistance or want to discuss topics, feel free to start a new thread.

I appreciate your help, Emerson.

Thanks,

Jenelyn