Nest Learning Thermostat Problems & Troubleshooting

Select the problem you are experiencing to find step-by-step fix guides.

🔄 Try this first — Press and hold the thermostat display for 10 seconds until it restarts. Also check your boiler is switched on and your router is working. This clears most temporary faults.

Common Problems

Offline
Fix Guide
Not Heating
Fix Guide
Not Cooling
Fix Guide
Low Battery Warning
Fix Guide
Won’t Connect to Wi-Fi
Fix Guide