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18 EN
Problem Possible solution
The color of the air
quality light always
stays the same.
• The air quality sensor is dirty. Clean the air quality sensor
(see chapter "Cleaning").
The air purier
produces a
unpleasant smell.
• The first few times you use the air purifier, it may produce
a plastic smell. This is normal. The air purifier may also
produce an unpleasant smell when the filter is dirty. In this
case, clean or replace the appropriate filter.
• If the air purifier produces a burnt odor, switch OFF and
unplug from the electrical outlet. Call 1-866-309-8817 for
assistance.
The air purier is
loud.
• If the air purifier is too loud, change the fan speed to a
lower fan speed level. When using the air purifier in a
bedroom at night, choose the sleep mode.
The air purier still
indicates that I
need to replace a
lter, but I already
did.
• Perhaps you did not reset the filter lifetime counter. Plug
in the air purifier, touch to switch on the air purifier, and
touch and hold the reset button for 3 seconds (see
Filter force reset section).
Error codes "E1",
"E2", "E3" or "E4"
displays on the
screen.
• The air purifier has malfunctions. Visit www.philips.com/
support or call 1-866-309-8817 for assistance.
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