Philips AC4002 manual English, Filter replacement lock

18English

-- 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.

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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.

Note:The time between the filter replacement signal and the locking of the appliance varies, depending on how often you use the appliance.

Note:When the power on/off light, filter replacement light 2 or 3/4 and the ‘REPLACE FILTER’ light are on continuously, the appliance is locked (see section ‘Filter maintenance’ in this chapter for more information).

Approximately 1 day before the appliance locks, it beeps every 30 minutes

to inform you that one of the filters needs to be replaced.

When the appliance is locked, you hear a beep when you press any button.

You can switch off the appliance by pressing and holding the on/off button.

If the appliance is locked:

1Check which filter needs to be replaced (see section ‘Filter cleaning light and filter replacement lights’ above).

2Switch off the appliance and unplug it.

3Replace the appropriate filter (see section ‘Replacing the filters and resetting the appliance’ below).

Replacing the filters and resetting the appliance

Tip: Place the appliance against a wall for more stability when you remove or insert filters. 

1Switch off the appliance and unplug it.

2Place your fingers in the recesses of the side panels and gently pull the bottom part of the front panel towards you.Then lift the hooks at the top of the panel out of the top of the appliance.