Filter Reminder; Service Indicator - Lennox ComfortSense 3000 Series Operation Manual

Filter Reminder

The L3011C thermostat includes a filter reminder feature.
The filter reminder can be set for 1, 3, 6, or 12−month inter-
vals. The SETTINGS button, located behind the door on
the right−hand side of the thermostat is used to set the filter
reminder interval. See figure 3. Press the SETTINGS but-
ton from the HOME screen to display the Filter Reminder
Settings screen as shown in figure 11.
0
Figure 11. Filter Reminder Settings
The default setting for the filter reminder is 0, which dis-
ables the function. Use the UP arrow while in the Filter Re-
minder Settings screen to select the desired interval be-
tween reminders. It may be necessary to press the UP
arrow several times to access the desired setting. The
HOME screen will reappear about 10 seconds after the ar-
row key has been pressed for the final time.
After the programmed interval has elapsed, the FILTER re-
minder will be displayed as shown in figure 12. After the fil-
ter has been changed, reset the filter reminder by pressing
the SETTINGS button for 4 seconds. The screen will blink
for a few moments to indicate that the timer has been reset.
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FILTER
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Figure 12. Display of Filter Reminder

Service Indicator

When abnormal equipment operation is detected, the
SERVICE indicator will flash on the upper-right corner of
the screen. This indicates that the equipment requires ser-
vice from a qualified service technician. The SERVICE in-
dicator is shown in figure 13.
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Figure 13. Service Indicator Flashing
FILTER
FAN
AUTO
SYSTEM
HEAT
SERVICE
FAN
AUTO
SYSTEM
HEAT