The first thing to try probably not surprisingly is turning the thermostat off then turning it on. 4 ways to fix it check nest services.
Nest Thermostat E Review Trusted Reviews
How to fix nest thermostat. If there is an outage its on nests end. Remove the screws securing. The nest thermostat does not support multiple stages of heat and multiple fan speeds at the same time. Scroll all the way to the right and select reset. Start by clicking on the nest thermostat unit to bring up the main menu. That means its also susceptible to crashing freezing and other problems.
Give it a restart. Heres how to restart the nest thermostat if it ever becomes unresponsive. Remove the base plate disconnect each of the labeled wires from the thermostat by pushing in the terminal tab and pulling out the wire. G 2 wire detected. Restarting your thermostat can resolve some issues like a slow or frozen display or help it get reconnected to the internet. If you need to clear out some or all of the learning about your home.
First check that services are online with this tool. Contact a local pro if you need more help. Scroll to settings and select it. Gently pull the thermostat wire cable out from the wall a few inches if possible to prevent the cable from slipping. Your nest thermostat has detected a g 2 fan wire in the y 2 connector and an emergency heat wire in the connector. Choose all settings at the very bottom.
The nest thermostat is a piece of hardware with circuitry and an operating system just like any computer.