Filter Replacement; Filter Maintenance; Filter Cleaning Light And Filter Replacement Lights; Filter Replacement Lock - Philips AC4004 User Manual

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.
This air purifier is also equipped with the Healthy air protect lock to ensure
that the filters are in optimal condition when the appliance is operating.
When you do not replace filter 2 (AC4004 only), filter 3 and/or filter 4, the
appliance stops operating and the appliance is locked. When the appliance
is locked, the filter replacement light of the filter concerned and the
'REPLACE FILTER' light light up continuously.

Filter cleaning light and filter replacement lights

The filter cleaning light and the filter replacement lights indicate which filter
has to be cleaned or replaced.
- Filter cleaning light 1 flashes: you have to clean filter 1 (pre-filter). See
chapter 'Cleaning' for further instructions.
- Filter replacement light 2 and the 'REPLACE FILTER' light flash: filter 2
(multi-care filter, AC4004 only) has to be replaced.
- Filter replacement light 3/4 and the 'REPLACE FILTER' light flash: filter 3
(activated carbon filter) and filter 4 (HEPA filter) have to be replaced.
Note: Filter 3 (activated carbon filter) and filter 4 (HEPA filter) have a similar
lifetime. Therefore they have to be replaced at the same time.

Filter replacement lock

If you do not replace a filter in time, the appliance stops operating approx.
2 weeks after the filter replacement light started flashing. When the
appliance is locked, it does not operate until you have replaced the full filter
and pressed the reset button.
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