Google Nest Learning Thermostat 3rd Generation, Black - Smart Thermostat - A Brighter Way To Save Energy

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If none of the solutions above fixes your Nest thermostat, the device may be damaged. To confirm this, install your old thermostat again to see if it works. If you don’t want to hire an installation expert to set up your Nest thermostat for you, you can call the Google Nest support team. They’ll walk you through the installation process and ensure that you set up the thermostat properly. Closing Thoughts The display connector on the thermostat base is different for all 3 generations of the Nest Learning Thermostat. In addition, the connectors for the system wires are different between thermostat models.

Important: Turn off power to your system at the system switch or fuse box. This helps protect your system and thermostat from possible damage. As Boilers and radiators are installed by third parties, they do have to install in compliance with regulations and manufacturer standards to get the full benefit of the warranty. Some systems, including heating-only, cooling-only, zone-controlled, and heat pump systems, require a C wire or the Nest Power Connector. Go to g.co/nest/cwire for details.All our products are guaranteed for a minimum of 1 year (radiators vary - see individual product specifications, copper tube 25 years) but many offer longer warranties from the manufacturer, which you may need to register for. If you discover that your heating system is millivolt, proprietary, or high voltage, you might need to replace your Nest thermostat with a compatible alternative. That said, an installation expert can help you rewire your proprietary heating system to make it compatible with the Nest thermostat. Re-insert Your Thermostat’s Wires Appropriately

Your thermostat should automatically turn on once it’s connected to your system and your system is powered up. If the Voc, Vin or lin values are not within the specific ranges listed here, there may be a wiring or system issue:If your old thermostat isn’t working either, there might be a blown fuse in your HVAC system. Ask your HVAC technician to repair your HVAC system. Switch off your HVAC system at the fuse box. If the HVAC system uses a switch, you should also turn that off. This will prevent your thermostat and HVAC system from getting damaged as you re-insert the thermostat wires. If there’s a power issue, your thermostat’s battery will drain and it'll turn off Wi-Fi, the display, and other features to preserve battery life. Before you begin You should fix any issues with your system or thermostat, but as a temporary measure, you can charge your Nest thermostat with a USB cable. A blinking green light near the top of your Nest thermostat’s display means that it’s updating the software, starting up, or restarting. Typically, this will only last a minute or two. Once your thermostat has finished starting up, it'll turn on so you can use it.