ZEN Thermostat supports setting the following operating modes via the thermostat display:
- HEAT, COOL, OFF, EMER (emergency heat)
- FAN AUTO (your HVAC system controls the fan) or FAN ON (fan on at all times)
- AUTO (not available by default, must be enabled in advanced settings)
The ZEN user interface automatically adjusts to only show the operating modes that are available for the wiring and HVAC configuration.
Other functions such as scheduling, economy modes, or demand response are controlled through the home-automation platform using a touchscreen or smartphone app.