6 Replacing the
filters
Filter replacement
indicator
This air purifier is equipped with a
filter replacement indicator to make
sure that the air purification filter is in
optimal condition when the air purifier
is operating. When the filters need to be
replaced, the filter code displays on the
screen (see Filter alert chart).
If the filters are not replaced in time,
the air purifier will stop operating and
automatically lock to protect the air
quality in the room. Replace the filters
as soon as possible according to the
filter code.
Replacing the filters
Note
• The air purification filters are not
washable nor vacuum cleanable.
• Always turn off the air purifier and
unplug from the electrical outlet
before replacing the filters.
• Do not clean the filters with a
vacuum.
• If the pre-filter is damaged, worn or
broken, do not use. Visit
www.philips.com/support or contact
the Consumer Care Center in your
country.
12
EN
Filter alert light
status
A3 displays on the
screen
C7 displays on the
screen
A3 and C7 display
on the screen
alternately
1
Turn off the air purifier and unplug
from the wall outlet.
2
Take out the used air filter according
to the filter alert light status
displayed on the screen (fig. |).
Discard used filters.
Note
• Do not touch the pleated filter
surface, or smell the filters as they
have collected pollutants from the
air.
3
Remove all packaging material from
the new filters (fig. f).
4
Place the new filters into the air
purifier (fig. g).
5
Put the plug of the air purifier in the
wall outlet.
6
Touch and hold the reset button
for 3 seconds to reset the filter
lifetime counter (fig. }).
Note
• Wash your hands after changing a
filter.
Action
Replace the
NanoProtect filter
Series 3 (FY2422)
Replace the
NanoProtect filter
active carbon
(FY2420)
Replace both
filters