Bissell 3596 - Manual (Page 8)

Select Models Only
The Clean Carpet Sensor detects dirt being picked up
while the vacuum is in use. When the vacuum is picking
up dirt, the red light will come on. Occasionally, the lights
may alternate quickly back and forth if the area is only
lightly soiled or the dirt is spread out. For the best
cleaning, continue to vacuum until the green light
remains constantly illuminated.
Select Models Only
The Clean Filter Indicator tells you when airflow in
the vacuum is reduced due to dirty filters or a clog
in the hose. The Clean Filter Indicator will remain
green until the airflow is reduced. At that time, it
begins to change to red. When it is fully red, the
airflow is significantly reduced or blocked. Follow
the steps on page 11 to clean your filters. All filters
in the vacuum should be cleaned or replaced when
the Clean Filter Indicator turns red.
If the indicator remains red after all filters have been
cleaned, follow the steps on page 13 to check for
and clear clogs.
8
NOTICE:
While vacuuming, certain carpets
and low humidity conditions may
generate small static discharges.
The discharges are entirely
harmless and are not associated
in any way with the main
power supply.
Clean Carpet Sensor
Clean Filter Indicator