Hi Jenelyn, I got it worked out! Turns out the “blue” wire wasn’t
connected at the furnace. Once I connected it, both thermostats worked
just fine without the power connector. So, a Nest system does work in a
one furnace zone system without issue. I ...
I have a gas with forced air system. One unit that services basement,
first floor and second floor. There is a thermostat on the each floor.
How do I upload pics into here?
Four thermostats for one furnace/home? If so, I'm in a similar issue - I
have a one furnace home with two thermostats - one for downstairs and
one for upstairs. When installing my Downstairs (main) Nest thermostat,
the C wire was not powered. I was t...
