Set the thermostat mode to Heat, Cool, Off, or Auto
Adjust the temperature using the up and down arrows or the touchscreen
Set the fan to Auto or On
Program a schedule if your model supports it
Use Hold to maintain a constant temperature
Check the display for current temperature, set temperature, and system status
Replace batteries if the low-battery indicator appears
Make sure the thermostat is connected to power or Wi-Fi if required
Use the app if your model supports remote control
Refer to the model-specific manual for advanced settings