W2 wire location

[ASB1]

The Nest compatibility checker said that the Nest Thermostat should work with my system, but as I tried to install it, there was only a place for the “Y” “C” “W” “G” and “R” wires, and for “OB” which I do not have. 

What do I do with my “W2” wire?

[RenzJ]

Hi ASB1,

Thanks for bringing this up in the Google Nest Community forum. I understand they can be confusing, let's see what's going on. Please answer the following:

1. Are you from North America or Europe? 
2. Which Nest thermostat you have?
3. Send a picture of your current wiring.
4. If possible, picture of your old wiring before Nest Thermostat.

I look forward to your response.

Cheers,

Renz