Ecobee Thermostat Keeps Rebooting: How to Fix

I recently bought the ecobee thermostat because of the stunning reviews I found online. I was able to install the device easily and sat down to watch it work.

Ecobee thermostat rebooting

Immediately after I finished setting up the thermostat, it went off and turned back on.

Thinking that the thermostat was only trying to adapt to my HVAC, I didn’t consider the reboot strange. But when the device restarted several times within the next hour, I knew that there was a problem. 

After doing some research, I found a way to get the issue resolved. If you’re having the same issue with your ecobee thermostat, here’s how to fix it:

First, perform a hard reset on the thermostat. Then cancel all scheduled reboots on the device.

If this doesn’t fix the rebooting issue on your ecobee thermostat, keep reading to find other solutions.

Troubleshooting Your Ecobee Thermostat that Keeps Rebooting

Hard Reset Your Thermostat

If you experience a power surge in your home, it might destabilize the internal workings of your ecobee thermostat. To prevent this issue, the thermostat automatically reboots whenever the power becomes unstable.

Unfortunately, this also means that the thermostat will keep restarting if the power fluctuations continue.

You can stop these repeated reboots by hard resetting your thermostat. A hard reset will remove any leftover electric current in the thermostat, thus letting the device restart on a new slate.

Follow these steps to hard reset your ecobee thermostat:

  • Flip off your circuit breaker to avoid a power shock during the reset.
  • Next, press the power button on your thermostat to switch it off.
  • Unmount your thermostat from the wall. This will reveal the wiring at the back of the device.
  • Locate the C-wire and unplug it from the backplate. In most cases, the C wire has a red color.
  • Wait 5 minutes.
  • Now, re-plug the C wire to the backplate.
  • Then remount the thermostat onto the wall.

If this method doesn’t hard reset your ecobee thermostat, refer to your user manual for guidelines.

If your Ecobee thermostat keeps rebooting after the hard reset, move to the next step.

Cancel all Scheduled Reboots on Your Thermostat

Your thermostat might constantly reboot because you’ve scheduled the device to do so at certain periods of the day.

The ecobee mobile app allows users to program their ecobee devices to perform certain functions within specific periods of the day. The scheduled functions available for the ecobee thermostat include heating and cooling modes, and reboots.

Perhaps you created several reboot schedules for today and forgot about them.

In that case, you’ll need to cancel the scheduled reboots from your ecobee mobile app.

Here’s how to do that:

  • Open the Ecobee app on your phone.
  • Click on the Home icon at the bottom of the page.
  • Next, tap the Settings tab.
  • Choose My Thermostat.
  • Select Schedules.
  • Now tap on Active. You’ll see all the actions you’ve scheduled for your thermostat here.
  • Scroll to the Restart function and click on the X symbol beside the function to deactivate it.

Once you’ve deleted all reboot schedules, close the ecobee app. Then check if your thermostat is still rebooting continuously. If it is, continue to the next step.

Replace Blown Fuses in Your Circuit Breaker

If your furnace has a blown fuse, it might affect the proper functioning of the thermostat.

Your thermostat is responsible for regulating the air that comes out of the furnace. That said, the thermostat might be unable to control the furnace if the device is faulty. This may cause the thermostat to malfunction.

Constant rebooting is one of the ways a malfunction may manifest in your ecobee thermostat. You can fix this issue by changing the blown fuse in your furnace.

Take these steps to replace a blown fuse in a furnace:

  • Turn off your circuit breaker.
  • Look for your furnace compartment and open the fuse box in it.
  • Study all the fuses in the box to determine which one is blown. Most blown fuses look blackened.
  • Once you’ve found the blown fuse, twist it to the left.
  • Next, unscrew it until you’ve completely detached it from the fuse box.
  • Now, screw the new furnace fuse onto the fuse box. You can order a new furnace fuse online. Ensure that the new fuse has the same amp rating as the old fuse.

After replacing your furnace fuse, close the box and flip your circuit breaker back on.

Your thermostat should have stopped rebooting by now.

But if the device is still restarting, check the next tip.

Detach and Reconnect Your Wires to Your Thermostat

Another reason your ecobee thermostat may keep going off and turning on is faulty wiring. For instance, the wires on your thermostat may have loosened from their terminals.

To resolve this problem, you’ll need to remove and re-insert the wires into their terminals.

The following guide will help you apply this tip correctly:

  • Flip off your circuit breaker.
  • Remove your thermostat from the wall.
  • You’ll see three wires on the backplate. Take a picture of this setup to help you remember the correct terminal for each wire.
  • Disconnect these wires from their terminals.
  • Now, go back to your breaker box and check that these wires are properly tied around the power poles in the box.
  • Also, inspect the wires thoroughly for any damage. If you notice a tear in a wire, ask a professional to replace it.
  • Once you’ve confirmed that the wires are positioned correctly and in good condition, re-insert the wires into the appropriate terminals on the backplate.

After placing your thermostat back on the wall, turn it on. Then observe it for a while to determine if it keeps going on and off. If your thermostat is still power cycling constantly, continue to the next tip.

Move Your Thermostat to a Cooler Location in Your Home

If you’ve installed your thermostat near a heater, TV, or any other heat conductor, the thermostat may confuse the heat radiating from these devices as the temperature in your room. As such, it might keep rebooting to reduce the heat in the room.

Likewise, placing your ecobee thermostat under direct sunlight can affect the device’s perception of heat in your room.

To stop your thermostat from rebooting continuously, move the device away from heat conductors and sunlight. Then reinstall it in a cool, well-ventilated part of your home. Ensure that the new area in your home never gets too warm.

Is your thermostat still rebooting? If so, move on to the next step.

Fix the Calibration Process

The ecobee thermostat often calibrates whenever you turn it on. If the calibration process fails, your thermostat may keep going off and on to retry the calibration until it is successful.

Calibration is how your thermostat adjusts itself to correctly read your room’s temperature. If your thermostat can’t be calibrated, it may misread your room temperature.

Your thermostat may stop rebooting constantly if you fix the calibration process.

Here’s how to do that:

  • Ensure that you’ve set the correct rating for your desired temperature on your thermostat.
  • Adjust the temperature on your furnace to match your desired temperature.
  • Press the power switch on your furnace while turning on your thermostat.

Your thermostat should calibrate successfully after this and stop rebooting.

But if the reboots continue after this, try the final tip.

Factory Reset Your Thermostat

If none of the steps above fixes the issue, you might need to factory reset the thermostat. A factory reset will remove all errors in the device that might be causing repeated reboots.

Please note that all the settings you’ve added to your thermostat will disappear after the factory reset. So, you’ll have to re-add your preferred thermostat’s settings after factory resetting the device.

Follow these steps to factory reset your Ecobee thermostat:

  • Ensure that your thermostat is turned on.
  • Tap on the Menu button on the home screen of the thermostat.
  • Select Settings. Then click on Reset.
  • You’ll see a list of options here. Choose Reset All Settings.
  • Click on Confirm to start the factory reset. Then wait for about 5 minutes for the thermostat to finish resetting.

Your thermostat should start working properly after the factory reset.

Wrapping Up

If your Ecobee thermostat keeps rebooting after you’ve tried all these steps, contact Ecobee Support. The support team might give you other tips to help you resolve this problem.

Read Next:

How to Fix Ecobee Thermostat Connectivity Issues.

How to Troubleshoot Incorrect Temperature Readings in a Honeywell Thermostat.

Tips to Troubleshoot Vivint Thermostat Display Issues.