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Oct 15, 2016

Connecting the K Wire on the Nest Thermostat

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Connecting the K Wire on the Nest Thermostat

In this short blog entry I will explain where to insert the K Wire on the Nest Thermostat.

First off what is the Nest Thermostat for those who are unaware – Nest Labs is a home automation producer of programmable, self-learning, sensor-driven, Wi-Fi-enabled thermostats, smoke detectors, and other security systems. It introduced the Nest Learning Thermostat in 2011 as its first product.
Wikipedia on Nest Labs

So here we go a few weeks ago I purchased a Nest Thermostat for the family, however I ran into an issue on where to connect the K Wire that was labeled on my Honeywell Digital Thermostat.

K Wire Nest Thermostat

After much troubleshooting and following the guide via the Nest Thermostat Manual for more information I decided to call Nest regarding this. They asked me to email them over a picture of above to them and after doing so they kindly said that my Nest Thermostat would not be compatible with my home and they deeply apologized.

Nest Thermostat Wiring

I mentioned to Nicole that I was pretty sure that the K Wire needed to be inserted into the Y1 or Y2 slot of the Nest Thermostat and for validation I decided to do a YouTube Search regarding this. Great success, I was able to find this really simple video (no illustrations) that stated that all you needed to do is to insert the K Wire from into the Y1 slot of the Nest Thermostat. Check out the video below.

Nest Thermostat Wire Connections

Where to Connect the K wire on your Nest thermostat?

So after doing this the Nest Thermostat has been installed and everything has been working flawlessly!