Filter Indicator; Setting Or Resetting Filter Indicator - Honeywell T8635L User Manual

Filter Indicator

Your thermostat monitors the 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. Upon
expiration, the thermostat displays "Filter" and the
green LED lights (on the top right of the thermostat).
One fan run-time day equals twenty-four
hours of fan run time. For example, if the
fan is on only one-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 the Filter mode.
Filter
Tue
Wake
FILTER EXPIRATION INDICATOR
Filter
Filter
Press the Filter key to display filter information.
Example display shows current fan run time set
to 30 days with the filter set to expire in 5 days.
23
System
Em Heat
AM
Fan
Room
DST
Auto
Setting
Days
M17760
M14577
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