How do I reset the air filter reminder after replacing the filter?

After replacing the air filter, reset the timer by touching the 'Dismiss' button on the thermostat screen. Alert 181 corresponds to Air Filter 1 and Alert 182 corresponds to Air Filter 2, each with their own dismiss action. The reminder intervals can be configured in ISU 711 and ISU 712 using calendar days, run-time days, or months.