When one of the lters is almost full and has to be cleaned or replaced,
the corresponding light or lights (the pre-lter cleaning light or one of the
lter replacement lights together with the ‘REPLACE FILTER’ light) start to
ash. You then have to clean or replace this lter.
This air purier is also equipped with the Healthy air protect lock to ensure
that the lters are in optimal condition when the appliance is operating.
When you do not replace lter 2 (AC4004 only), lter 3 and/or lter 4, the
appliance stops operating and the appliance is locked. When the appliance
is locked, the lter replacement light of the lter concerned and the
’REPLACE FILTER’ light light up continuously.
The lter cleaning light and the lter replacement lights indicate which lter
has to be cleaned or replaced.
- Filter cleaning light 1 ashes: you have to clean lter 1 (pre-lter). See
chapter ‘Cleaning’ for further instructions.
- Filter replacement light 2 and the ‘REPLACE FILTER’ light ash: lter 2
(multi-care lter, AC4004 only) has to be replaced.
- Filter replacement light 3/4 and the ‘REPLACE FILTER’ light ash: lter 3
(activated carbon lter) and lter 4 (HEPA lter) have to be replaced.
Note: Filter 3 (activated carbon lter) and lter 4 (HEPA lter) have a similar
lifetime. Therefore they have to be replaced at the same time.
If you do not replace a lter in time, the appliance stops operating approx.
2 weeks after the lter replacement light started ashing. When the
appliance is locked, it does not operate until you have replaced the full lter
and pressed the reset button.
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