Philips AC4055 User Manual

Problem

Solution

Clean the filters and the corona particle charger (see chapter ‘Cleaning 

and maintenance’). If this does not help, unplug the appliance and take it 

to your Philips dealer or an authorised Philips service centre.

The odours are not 

removed properly.

The zeolite gas filter may be dirty or may have reached the end of its 

life. Clean the zeolite gas filter (see chapter ‘Cleaning and maintenance’) 

or replace it (see chapter ‘Filter replacement’).
Perhaps you use the appliance in a room in which the ambient air 

quality is very poor. In that case, open windows to improve the air 

circulation.
Perhaps you use the appliance in a room that is much bigger than the 

room size the appliance is intended for. Put the appliance in a smaller 

room. The recommended room size is 6m² up to 20m² for AC4055/

AC4053 and 6m² up to 40m² for AC4065/AC4063.

The dust particles are 

not removed properly.

The ESP particle filter may have reached the end of its life. Check the 

colour of the ESP particle filter (see chapter ‘Filter Replacement’). If 

necessary, replace the filter.
Perhaps you use the appliance in a room that is much bigger than the 

room size the appliance is intended for. Put the appliance in a smaller 

room. The recommended room size is 6m² up to 20m² for AC4055/

AC4053 and 6m² up to 40m² for AC4065/AC4063.

The fans do not work, 

even though the 

appliance is plugged in 

and switched on.

The appliance may be malfunctioning. Switch off the appliance and 

unplug it. Take the appliance to your Philips dealer or an authorised 

Philips service centre.

The appliance produces 

an unusual noise (e.g. a 

hissing, sizzling or 

crackling noise) during 

operation.

The pre-filter may be clogged. Clean the pre-filter (see chapter 

‘Cleaning and maintenance’).

Perhaps you forgot to remove the plastic wrapper of a new filter. 

Remove the plastic wrapper before you switch on the appliance again.
The air inlet or outlet may be blocked by external objects. Remove the 

object that blocks the air inlet or outlet.
The appliance may be malfunctioning. Switch off the appliance and 

unplug it. Take the appliance to your Philips dealer or an authorised 

Philips service centre.
Perhaps the mesh of the corona particle charger is not clean. Clean the 

corona particle charger (see chapter ‘Cleaning and maintenance’).

The appliance produces 

a burning smell during 

operation

The appliance may be malfunctioning. Switch off the appliance and 

unplug it. Take the appliance to your Philips dealer or an authorised 

Philips service centre.

The appliance gives off 

an unusual smell during 

operation.

In case of an unusual smell, contact an authorised Philips service centre.

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