Honeywell E Owner's Manual - Page 23

Filter Indicator Filter Tue Wake AM Room DST FILTER EXPIRATION INDICATOR System Em Heat Fan Auto M20899 Your thermostat monitors the amount of time the fan is running and lets you know when to replace the filter, based on the number of fan run-time days you select. On expiration, thermostat displays "Filter." One fan run-time day equals 24 fan run-time hours. (If fan is on only one- 60 70 80 90 60 70 80 90 third of the time each day, it takes three days to deduct one fan run-time day.) Setting or Resetting Filter Indicator Your thermostat comes preset to a 30-day setting. To change this setting or reset after filter expiration: 1. Press Filter key to enter Filter mode. Filter M14577 Press Filter key to display filter information. Example display shows current fan run time set to 30 days with filter set to expire in five days. 2. Press and hold Filter key for at least three seconds to Filter reset fan run time. 23 69-1538