Nest 3 Thermostat is Offline and Showing Low Battery

[LMFlans]

Our Nest 3 (installed last August 2023) is offline and showing low battery. It is connected to the wall and after a 2+hour recharge on USB, is still showing low battery and will not connect to wifi or maintain a charge. Have seen others appear to be having similar issues with disappointing outcomes. What do I do?

Lauren

[moralesvicente]

Hey LMFlans

Thank you for letting me know your concerns. It seems like your thermostat is dropping the charge. I have some suggestions that might solve the inconvenience: 

Check C-Wire Connection:  The Nest thermostat  typically gets its power from your HVAC system's wiring. A C-wire provides constant power to the thermostat, reducing reliance on the internal batteries. If your Nest wasn't wired with a C-wire,  the internal batteries might be draining faster than expected.  Check if your system has a C-wire and if it's properly connected.

Do you see a blinking LED light? If so, is it red or green?

• If the LED is red: Have you tried charging the display through a different outlet using the adapter and cable?. Ensure that the Thermostat is charged to 3.8 V or more. Verify this in the thermostat settings > technical information > power.  (if the Thermostat is not showing the recommended level,  try to charge up the device for about 2 hours or more.
• If the LED is green: Have you tried manually restarting the thermostat?.

Let me know how it goes,

Daniel 

[LMFlans]

It does not appear to be pulling a charge from the wall and will only charge (very slowly) when taken off the wall and charged via USB cable. Today it took 3 hours for the charge to go from 3.4V to 3.6V on the USB. Battery is not maintaining charge while on the wall, leading me to believe it is no longer pulling power from the wall. It has pulled a charge from the wall just fine from when it was installed last august until now. 

[moralesvicente]

Hi LMFlans

I’m sorry to hear that the inconvenience is still not resolved. But don’t worry , to get better assistance please fill out this form and one of our specialists will support you.

Regards,

Daniel