Air Quality Sensor; Filter Replacement; Filter Maintenance - Philips AC4002 Mode D'emploi

ENGLISH
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Press and hold the reset button for filter 1 (the button below the filter
cleaning light) for 2 seconds to reset the appliance.

Air quality sensor

Clean the air quality sensor every 2 months for optimal functioning of
the appliance. Clean it more frequently if you use the appliance in a dusty
environment.
Note: When the humidity level in the room is very high, it is possible that
condensation develops on the air quality sensor. As a result, the AIR QUALITY
light on the control panel may indicate that the air quality is bad even though
the air quality is good. In this case you have to clean the air quality sensor or
use one of the manual speed settings.
1 Clean the air quality sensor inlet and the air quality sensor outlet with a
soft brush.
2 Remove the air quality sensor cover.
3
Clean the air quality sensor, the dust inlet and the dust outlet with a
lightly moistened cotton swab.
4
Dry them with a dry cotton swab.
5 Reattach the air quality sensor cover.

Filter replacement

Filter maintenance

When one of the filters is almost full and has to be cleaned or replaced,
the corresponding light or lights (the pre-filter cleaning light or one of the
filter replacement lights together with the 'REPLACE FILTER' light) start to
flash. You then have to clean or replace this filter.