Skip to main content
Paul Lindner
 

If you see a "low battery" or "offline" warnings on your Nest thermostat check if you have a "C" wire.

If you see a "low battery" or "offline" warnings on your Nest thermostat check if you have a "C" wire.  I was lucky, there was an unused wire that I was able to easily attach on both ends.

The power stealing from the control wiring is a neat technique, but direct power is better.

http://diy.stackexchange.com/questions/10482/how-can-i-add-a-c-wire-to-my-thermostat

0 stars 2 comments

I heard Americans only have an "F" wire

badoom-tissh

Mike L., Mar 02 2014 on 1500wordmtu.com

Yeah, we moved recently and the rental townhouse has some fancy multi-zone setup that the Nest can't steal power from. Fortunately they also had an extra wire in the wall I could dig out and use for for the "C" wire.

Ask Bjørn Hansen, Mar 02 2014 on 1500wordmtu.com