It’ll tell you what wires are connected. If your nest thermostat battery no longer holds a charge, it may be time to replace it. In case your nest battery is low, you should try charging the inbuilt battery.
Nest thermostat needs to be recharged
You can also troubleshoot the wire connection.
If the nest thermostat is shutting down due to a faulty power source, low battery, or a failed connection to the cloud, you should take the necessary steps to resolve the issue.
How to replace your nest thermostat’s battery. To restart your nest thermostat, press and hold down the thermostat ring for 10 seconds or until the screen turns off. A few things that you need to start with are: How to fix thermostat not charging or low battery?
Release the ring and turn the thermostat back on by. It seems to all be connected. You can remove the top portion of the nest from the wall, look on the back. Most likely you do not have a c wire, and your system is.
Luckily, this process is relatively simple.
The thermostat generally keeps its charge by the power being sent to the thermostat from the indoor air handler. One temporary fix to the nest thermostat low battery issue is to manually charge the internal battery using a usb cable. If there is no down time because it's constantly running, then first you will start seeing a delayed message sometimes where it will try to shut down to recharge, then low battery then it will just. Go into the app and look under settings/equipment/wiring.
