How to Fix Ecobee thermostat not turning on – Ecobee Support

Why is My Ecobee Thermostat Not Turning on? Problem Solved

The Ecobee smart thermostat is an amazing gadget for your home. It not only allows you to control the temperature of your home using a remote but also saves a lot of money from adequate power consumption.

Whether you want to cool down or heat a particular room or space, Ecobee thermostat does it all for you. So, it is a perfect addition to your smart home. Especially when the holiday season is just around the corner getting an Ecobee thermostat is a perfect thing for your home.

If suddenly your Ecobee thermostat not turning on then there may be some technical issue with the device. Sometimes an issue with the power source can result in such a problem. However, there are several other reasons also that may result in this issue.

But you do not have to worry as certain solutions can help you fix the issue with the Ecobee thermostat. However, if you are new and are not a tech-savvy person you can also get in touch with the technical support team for help and assistance.

Quick Fixes to Resolve Ecobee Thermostat Not Turning On

A smart Ecobee thermostat is surely a great addition to your home. The thermostat can be enabled on your wi-fi network and you can easily control the temperature using the remote from anywhere.

Moreover, the Ecobee thermostat can also be set up and added with Alexa and Apple’s HomeKit to make things more convenient for the user.

But if you are facing Ecobee thermostat not turning on the issue then you must know that there are several reasons why this problem may arise.

However, many times this problem can be resolved by following the basic troubleshooting guidelines.

Make sure to check the power source as it can be the reason why you are facing problem with the Ecobee thermostat.

You can use a multimeter tool to check the voltage of the Ecobee thermostat. Make sure the voltage is not less than 24V as it can be the reason why the Ecobee thermostat won’t turn on.

If you are facing a similar problem then here are the solutions that you can try to resolve the issue.

Check the Power Wire Connection

The power wire for the Ecobee thermostat must be connected to the Rc terminal of the thermostat. Make sure all of the wires are properly connected to the terminal of the thermostat. Try to pull each wire gently to check if it is properly inserted or not. Also, check the lever on the other side and make sure it is down and properly connected.

Check the C Wire Connection

If the Ecobee thermostat not turning on then you need to check the C wire connection. For Ecobee thermostat to work properly it needs to have a proper C wire connection.

Check the thermostat wire bundle for extra C wire. Also, check the wire as it must be connected to the C terminal of the HVAC control board.

If you are unable to find the C terminal on the board or are confused between the wired connections make sure to get in touch with the technical support team for help.

Check the Power Extender Kit

If you have installed PEK with the Ecobee 3, Ecobee 4, and smart thermostat with the voice control then you need to verify the wiring system as follows.

  • R wire with RC terminal.
  • G wire with C terminal.
  • W wire with W1 terminal.
  • Y wire with PEK terminal.

But if you do not have a PEK terminal then the C wire must be connected to the C terminal of the HVAC board.


Ecobee Thermostat is a perfect addition to your house. It not only helps you remotely regulate the temperature of your home but also conveniently saves energy.

But many times, the users may come across problems like Ecobee thermostat not turning on because of power or voltage related issue.

If you are facing a similar problem then you can follow the troubleshooting solutions mentioned above to fix the issue.

However, if the problem is unresolved and you need help then get in touch with the technical support team for an immediate solution.