How do I change the system mode to heating or cooling on my Lyric?

You can change your Lyric thermostat's system mode from either the Lyric app or the thermostat itself. From the Lyric app Tap on the thermostat icon on your location home screen. Then tap on the current desired temperature. This number will be in either blue or orange and will be displayed above your room temperature. You will see a snowflake, the word "Off" and a sun. To put your Lyric thermostat into the heating mode, press the sun icon. The sun will turn orange and the desired temperature will also be displayed in orange. To put your Lyric thermostat into the cooling mode, press the snowflake icon. The snowflake will turn blue and the desired temperature will also be displayed in blue. Press "Off" to turn off both your heating and cooling systems. The set temperature will be displayed in gray. From the Lyric thermostat Tap the current desired temperature, shown on a small display above the main room temperature display. You will see a snowflake, the word "Off" and a sun. To put your Lyric thermostat into the heating mode, press the sun icon. The sun will turn orange and the desired temperature will also be displayed in orange. To put your Lyric thermostat into the cooling mode, press the snowflake icon. The snowflake will turn blue and the desired temperature will also be displayed in blue. Press "Off" to turn off both your heating and cooling systems. The desired temperature will be replaced by the word "Off,"displayed in yellow. The main room temperature display will also display either "Heating" or "Cooling" as appropriate for a moment.