So an odd issue here. Nest support site said it may not need the c wire so i tried with.

My Nest Thermostat Always Says Low Battery Its Wired
How to charge nest thermostat e. Press the nest ring again to turn back on the device and release. Disconnect the nest from the usb cable and hold down the nest ring for about 10 seconds or until the display goes black. My thermostat isnt charging the battery when i have it on the wall. How to charge nest thermostat 1 check the power switch. 2 remove nest from wall charge. Ive tried with the blue c wire in place and with it out.
It charges fine when i plug it in by usb. The nest thermostat e is not compatible with dual transformer systems but you may be able to use the 3rd generation nest learning thermostat. Looking at whether the nest learning thermostat has a battery and needs to be recharged june 26 2019. 3 use a common wire for. If you have an rc or rh wire put the. Yes this sounds obvious and simple but ive known more than a few people who thought their.
Nest thermostat e not charging battery. After it starts up plug the usb cable back in to finish charging the nest. Ive checked the wiring its as it should be. But in a small number of situations you may need to connect a common or c. Youll see a blinking red light at the. Label the wires peel off the labels below and attach them to the thermostats matching wires.
You should now see the nest animation as it starts back up. In most cases google nest thermostats can charge their built in battery using your systems heating and cooling wires. Simply pull off the thermostat display from the base and plug it into a usb port on your computer or a wall charger like the one you use to charge your phone. If the nest hasnt been charging or you cant diagnose what is going on with your.