Nest Support

Questions about Nest Learning Thermostat or Nest Protect: Smoke + CO alarm? We've got answers, videos, and plenty of resources to help you out.

Why is there a blinking green light on the Nest Learning Thermostat display?

A small light on the Nest Learning Thermostat display will flash green when Nest is updating software or restarting.

  • Updating software
  • Restarting
  • Booting up after being connected to the base

Typically, this will only last a minute or two. Once the Nest Thermostat has finished the software update and restarted, the display will turn on.

If the light continues to blink and the Nest Thermostat remains unresponsive for more than 5 minutes, try removing and reconnecting the display.

If reconnecting the display doesn't help, push and hold the thermostat ring down for 10 seconds to restart it. For more details, please see the following article.

How to restart or reset the Nest Learning Thermostat

If your thermostat is still having issues after restarting, contact our support team. We'll help get you back up and running.

Why is there a blinking red light on the Nest Thermostat display?