🔄 Try this first — Press and hold the thermostat ring for about 10 seconds until the screen turns off, then release to restart it. Also check your boiler is switched on and your router is working.

Is your Nest Learning Thermostat failing to connect to Wi-Fi during setup or after a network change? Here are the checks you can safely carry out before contacting support.

What This Problem Means

The thermostat cannot establish or maintain a Wi-Fi connection. Without Wi-Fi the thermostat will still control your heating using its schedule, but you will not be able to control it remotely.

Common Symptoms

  • Setup fails at the Wi-Fi connection stage
  • The thermostat shows as offline in the app after a router change
  • Wi-Fi password is rejected during setup
  • The thermostat connects briefly then drops the connection

Safe Checks You Can Try

1. Check the Wi-Fi Password

On the Nest Learning Thermostat, re-enter your Wi-Fi password carefully. An incorrect password is the most common cause of connection failure.

2. Check the Wi-Fi Band

The Nest Learning Thermostat works best on 2.4GHz Wi-Fi. If your router uses the same name for 2.4GHz and 5GHz, the thermostat may struggle to connect. Giving each band a separate name, or temporarily disabling 5GHz during setup, can resolve this.

3. Restart Router and Thermostat

Unplug your router for 30 seconds, then plug it back in. Once it has fully reconnected, restart the thermostat and attempt the Wi-Fi connection again.

4. Check Wi-Fi Signal Strength

The Nest Learning Thermostat needs a usable signal where it is mounted. If far from the router or separated by thick walls, the signal may be too weak. A Wi-Fi extender nearer the thermostat will help.

5. Re-add the Thermostat in the App

If the thermostat still will not connect after a router change, remove it from the app and add it again from scratch.

🛒Need a spare part? Find compatible parts for your Nest Learning Thermostat on AmazonCheck Parts

When To Contact Support

If you have worked through the checks above and the issue persists, contact Google Nest support at https://support.google.com/googlenest. For heating system faults that do not resolve, consult a qualified heating engineer — the Nest Learning Thermostat works with your existing boiler wiring and a heating professional can check the connections safely.

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