Nest Thermostat Problems & Troubleshooting

Select your Nest thermostat below to find fault-by-fault fix guides for your specific model.

🔄 Try this first — Before checking your specific problem, try restarting your thermostat. Press and hold the display for 10 seconds until it restarts. Also check your boiler is switched on and your router is working. This resolves many temporary faults.

All Models

Nest Learning Thermostat
3rd Gen

Offline  |  Not heating  |  Not cooling  |  Low battery  |  Won’t connect  |  Schedule issues

Nest Thermostat E
Frosted Display

Offline  |  Not heating  |  Won’t connect  |  Low battery  |  Schedule issues

Nest Thermostat (2020)
Mirror Display

Offline  |  Not heating  |  Won’t connect  |  Home/Away not working  |  App issues

📚 Thinking of buying a Nest thermostat? Visit our Nest Thermostat Reviews page for full comparisons.  ·  Browse all smart home devices