Honeywell TH9000 Series - Furnace filter change reminder

Operating Manual
69-2404EFS—01 24
Advanced functions
Furnace filter change reminder
Function
0500
This feature displays an alert to remind you to change the furnace filter.
Press s/t to set the desired reminder interval:
Options: 0 Off
1 10-day run time
2 30-day run time
3 60-day run time
4 90-day run time
5 120-day run time
6 180-day run time
7 270-day run time
8 365-day run time
9 30 calender days
10 60 calender days
11 90 calender days
12 120 calender days
13 180 calender days
14 365 calender days
E Auto Alert (requires optional equipment)
Note: Press RESET
to cancel the alert