Hey LowHub,
Thanks for posting here in the Community forum. Don't worry I'm here to assist you. Check this article about how to change the temperature on a Nest thermostat. Remember that you can change the temperature in two different ways, using the Nest app or on the thermostat.
On the thermostat
Nest thermostats don’t have a touch screen. Use it just like a normal thermostat, turn the ring up when you want it a little warmer, and turn it down when you want it a little cooler.
- Press your thermostat ring or display (depending on the model) to see more options.
- Turn the ring to select an option.
- Press the ring/display again to confirm your selection.
Regarding locking and unlocking the thermostat you can unlock it using the Nest app or in a manual way. Just put the right password and you will be able to have access to change the temperature. If you don't know or have forgotten the password please let me know to provide you with advanced troubleshooting steps.
Best regards,
Daniel
