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Why Does My Nest Thermostat Keep Going Offline/Rebooting?

Nest thermostat keeps going offline

Why Does My Nest Thermostat Keep Rebooting?

One of the main reasons for your Nest thermostat rebooting on its own could be due to a WIFI connection issue or a blown fuse.

Reasons for the constant rebooting of the Nest thermostat could be:

  • Power not reaching the device correctly.
  • The Nest Thermostat is not fixed to the wall properly.
  • Irregular Wi-Fi Connectivity.
  • The system may have blown a fuse.
  • Display not seated perfectly.


Check the Connectors

The most frequently reported reason for a Nest thermostat malfunction or repeated rebooting is that the 20-pin connector may not be seated properly.

Pull out the male and female connectors and examine them closely for any defects like a bent pin.

If you find any such problems, immediately have the connectors replaced.


Power Supply to the Thermostat

If the power supply to the Nest thermostat is erratic it could cause the device to reboot or go offline from time to time. This could be due to a wiring issue. Get the wiring done properly.


Fixing to the Wall

There are occasions when you might have used a little extra force in tightening the threads while fastening the thermostat to the wall. This can lead to an internal dislocation and every time you press a button to alter the settings like the temperature, the Nest thermostat may go into are booting mode. This has to be corrected.


A Blown Fuse

The system installed at your house could have a blown fuse. You will have to check if the right voltage is being received by the thermostat. If not, have this fixed.


Troubleshooting Tips

There are a few checks you can conduct to trace the exact reason for your Nest thermostat constantly going to the reboot mode.

Checking if the wires are in order:

  • You have to first switch OFF the HVAC system.
  • Now, check if all the wires in the circuit are properly connected /seated.
  • Check the wire at the end of the terminal in particular. It must be flush with the base.
  • If these are all OK you can switch ON the HVAC system.

See if the Nest thermostat is now functioning properly.

Check if the display is seated properly by following these steps:

  • Take the display off its base (it’s a snap-fit design; you can just pull it out).
  • Examine if any wires or any other objects are obstructing the proper seating of the display.
  • Clear the obstructions if any.
  • Now, fit the display back; you can hear the clicking sound when it fits and seats properly.
  • If everything is normal, the thermostat will start showing a red blinking light which indicates that the battery is getting charged.
  • Depending on how much charge was there earlier it may take up to an hour for the thermostat to get fully charged.

Make sure power is reaching the thermostat by following these steps:

  • Check if the main power switch for the system is ON.
  • You can try switching OFF once and turning it back again ensuring that the knob is fully turned to the ON position.
  • Check if the fuses are in place and if there has been any blow-out.
  • Now, check if the Nest thermostat is working.
  • Follow the instructions and avoid doing anything that could damage the thermostat.
  • Check the wires connecting to the thermostat.
  • Ensure the wires are inserted properly and the connector button is down.

If none of these steps could take care of the issue of rebooting, you must contact a Nest Pro to lodge a complaint.


How to Fix Nest Thermostat that Keeps Rebooting?

There are different ways you can fix the Nest thermostat that keeps rebooting. Here are some of them:

  1. Check if the Wi-Fi connectivity is established. These are smart devices and without the internet, they cannot operate. Check if the Nest service is ON and that the thermostat’s connections are intact. You may have to consult the Troubleshooting directions in the Nest manual to do this.
  2. Give the Nest thermostat a quick ON-OFF. The round display will bring up the menu if you press it with your finger. Select the Settings menu. Choose Reset and Restart in succession and press OK to complete the command. The thermostat will switch OFF and again reboot.

Right when this is happening, you can do a restart of your Wi-Fi router as well. The right way is to remove the plug from the socket and wait for half a minute. Re-plug and the router will flicker back to life. This action can result in a shakeup and your Nest thermostat may function normally again.

One way to verify this is to log on to Nest Home and if you see the message Online under the thermostat icon, then your issue should have been resolved.

  1. Check if the batteries have the required voltage. There can be a charging issue with the battery in your Nest thermostat. The batteries have been designed in a way that if they show a voltage of 3.6V or more only, the thermostat will be able to get connected to the Wi-Fi.
  2. To verify this, you should press Settings>>Technical Info>>Power. The display will have the voltage indicated there. If you are seeing a value below 3.6V against Voltage, your Nest thermostat needs to be checked by a specialist.
  3. Attempt a complete reset. This is another option available to you to check and fix the Nest thermostat if it keeps rebooting. This is in a way similar to what you would do with your smartphone.
  4. The menu actions are Settings>>Reset>>Network>>Reset>>Confirm. This has to be done on your Nest thermostat. Having done this, you have to go back to Settings and choose Network.
  5. From there you will have to repeat the actions you had followed while setting up the Nest thermostat within the Wi-Fi network. You would be asked to identify the Wi-Fi connection and input the password.

These are the common steps recommended to fix the rebooting issue with the Nest thermostat. If the issue persists, call in the technician from NestPro.


Why Does My Nest Thermostat Keep Going Offline?

You can try the following steps to fix the issue of your Nest thermostat going offline.

  • Take the display off from the Nest thermostat.
  • Press the display for a while (around 10-15 seconds); this is like bringing the front and back of the display unit together in a pinch.
  • Place the display back on the slot making sure it snaps fit and produces the sound confirming that it is seated properly.
  • This should fix the issue.
  • If the above steps did not help, you should remove the display again and use a micro USB charger to charge the thermostat battery.
  • After charging for a few minutes, fix the display back to check if the issue is resolved.
  • If the problem persists you will have to call up Nest customer support to attend to it and if needed provide a replacement thermostat.

Another solution to fix this problem is to change the wire connecting your Nest thermostat to the system to a C wire. This may be done by a technician from Nest Pro. The display can sometimes identify the wire issue and even show you a wiring diagram on the display screen. You may be able to detect where the problem lies and even do a quick fix.

The only other reason why your Nest thermostat keeps going offline is the Wi-Fi connection. Check if the Wi-Fi is working perfectly. You may have other devices connected to it. There have been some reports from Nest thermostat users of the Wi-Fi failing due to the distance. These are issues you should be able to resolve easily.

A regular troubleshooting attempt could be made using the user manual provided by Google while installing the Nest system in your home. It has all those error codes and how to troubleshoot them.


How to Fix Nest Thermostat that Keeps Going Offline?

Google has a support page that lists the various actions you can initiate if your Nest thermostat shows it is offline. Some of these have already been covered under the earlier questions. The major steps recommended are summarized here:

  1. Check if your Wi-Fi connection is up and functional.
  2. Check if the Nest service is working; the Nest app will indicate if there is an issue.
  3. Ensure that the Nest app you have installed in your device is the latest updated version.
  4. Resetting/restarting your Nest thermostat can help fix the issue in most cases.
  5. Restart your router; this is a routine you will follow if you have issues with your Wi-Fi connection; unplug the router, wait for a few seconds and reconnect.
  6. Check if the Wi-Fi signal strength that is received on your Nest thermostat is strong enough; the ping speed there should not be lower than 1,500msand the signal strength at least 50 points out of a possible 100. You must eliminate any interference in the circuit.
  7. Check if there is any incompatibility issue between your Wi-Fi router and the Nest thermostat.

These are some of the steps you can quickly carry out one after the other to find out where exactly the problem lies and if nothing works, call in the expert from Nest Pro.

Ernie Lo

Ernie Lo is a qualified web designer and web developer. He works as an IT support technician and website manager at Benleigh Vending, and he also fixes vending machines.

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