Hi - trying to replace my British Gas UP2 with Nest 3rd Gen Thermostat.
Picture of UP2 wiring:
Image-2 by Lch posted 29 Sep 2018 at 4:30 PM
Did the following configuration:
UP2 'N' (blue) goes to Nest 'N'
UP2 'L' (red) goes to Nest 'L'
UP2 'Ground' (yellow/green) goes to Nest 'Ground'
UP2 '3'...
