What does the air filter reminder alert mean and how do I clear it?

The air filter reminder alert icon appears on the Home screen when the air filter needs replacement. Press Menu, navigate to ALRT, and press Select to view alerts. The message 'REPL' (replace air filter) will display. You can snooze the reminder for 7 days or clear it after replacing the filter. Resideo recommends changing the air filter before clearing the reminder. (Page 7)