If the light is still blinking after reconnecting the device restart it by holding down the thermostat ring for 10 seconds. Never try to restart the nest while its connected to a computer or power source while charging.
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Nest blinking green light while charging. But if this continues for longer than a few minutes see the article below for more troubleshooting. Model 3 is charging at a reduced current ac charging. Typically this will only last a minute or two. This situation arises when the thermostat experiences low charge even if its connected to the plug point. It should automatically turn on when finished. If you witness green blinking light there are different reasons.
If it takes much longer time check to make sure the display is correctly connected to the thermostat base. If the lights continue to blink for more than 5 minutes remove and reconnect the display. Sometimes the software might be updating or the device is restarting. Pull off the nest display and use the usb port on the back to charge it with a usb cable and wall charger. A blinking green light will appear if the nest is turning on restarting or updating. After around 10 minutes of charging unplug the nest thermostat from the usb cord.
A blinking green light near the top of your nest thermostats display means that its updating the software starting up or restarting. Charging is in progress. You should now see the nest animation as it starts back up. In this case you have to change the cable that you are using. As model 3 approaches a full charge the frequency of the blinking slows. Disconnect the nest from the usb cable and hold down the nest ring for about 10 seconds or until the display goes black.
Battery is too low to start. Why is there a flashing green light on the nest display. During this process the display will restart which usually only takes 1 2 minutes. The connector is not fully plugged in. Do not use a. Your thermostat has a green blinking light if a green blinking light suddenly appears it just means that your nest is automatically updating its software.
Depending on the model you have it will be either mini or micro usb. If the unit has turned on while charging shut it down and then turn it back on again manually restarting the system. Realign the connector to the charge port and insert fully. A small flashing green light on the nest thermostat display usually means that its updating software. Press the nest ring again to turn back on the device and release. Once it has fully restarted plug it back in to finish charging.