6 Replacing the
filter
Understanding the
healthy air protect lock
This appliance is equipped with the
healthy air protect lock to make sure
that the air puri cation lter is in
optimal condition when the appliance
is operating. When the lters are almost
expired, the lter code displays on the
screen to indicate that you need to
replace the lters.
If the lters are not replaced in 14 days,
the appliance will stop operating and
get locked.
Replacing the lters
( g.y)
Note
• The air puri cation lters are not
washable nor vacuum cleanable.
• Switch o the appliance before
replacing the lters.
Filter alert light
status
A3 displays on the
screen
C7 displays on the
screen
A3 and C7 display
on the screen
alternately
Follow this
Replace the
NanoProtect lter
Series 3 (FY2422)
Replace the
NanoProtect lter
AC (FY2420)
Replace both
lters
1
Take out the expired air puri cation
lter according to the lter code
displayed on the screen, and gently
put the expired lter into the trash
bin ( g.z).
Note
• Do not touch the pleated lter surface,
or smell the lters as they have
collected pollutants from the air.
2
Remove all packaging material of
the new lters ( g.c).
3
Place the new lters into the
appliance ( g.f).
4
Touch and hold the reset button
for 3 seconds to reset the lter
lifetime counter ( g.{).
Note
• Wash your hands after changing the
lter.
Filter force reset
1
Touch
and
for 3 seconds to enter the lter force
reset mode ( g.|).
» Code (A3) of the NanoProtect
lter Series 3 displays on the
screen.
2
Touch and hold
force reset the lter lifetime of the
NanoProtect lter Series 3
( g.{).
3
Code (C7) of the NanoProtect lter
AC displays on the screen after the
lifetime of the NanoProtect lter
Series 3 has been reset ( g.}).
4
Touch and hold
force reset the lter lifetime of the
NanoProtect lter AC and exit the
lter force reset mode ( g.~).
simultaneously
for 3 seconds to
for 3 seconds to
EN
11