System Off If this option is selected, theSmart Si thermostat will turn off heating andcooling for the duration of this event.Duty Cycle This option allows you toprogram the maximum amount of time thesystem will run during a 1 hour period. Forexample, if you select 30%, the air conditionerwill run for a maximum of 18 (0.3 x 60)minutes regardless of whether the set pointhas been met. 0% essentially turns the systemoff, whereas 100% runs the system at fullcapacity.Set Up Reminders and AlertsYour Smart Si thermostat can be programmedto remind you of required filter changes andregular maintenance.If you are not sure about what equipment youhave installed or whether you need to replacerather than clean your filters, please contact yourheating and cooling contractor, or consult youroriginal equipment manuals for the recommendedmaintenance procedures.HVAC ServiceThe HVAC Service (Maintenance) alert isdisplayed on the screen when regularlyscheduled maintenance is required. It will alsoshow your contractor’s contact information (ifprogrammed by the contractor).Select this item to turn the reminder on or off,show the date of the last service, and select areminder interval.To set up Reminders:From the Home screen,press MENU.Select Reminders andAlerts.Adjust each option to yourpersonal preferences.23