14 EN
Problem Possible solution
The air quality
does not improve,
even though the
appliance has
been operating
for a long time.
• Check if the packing material is removed from the lter.
• The lter has not been placed in the appliance. Make
sure that the lter (FY3430/30) is properly installed.
• The particle sensor is wet. The humidity level in your
room is high and causes condensation. Make sure that
the particle sensor is clean and dry (see the chapter
"Cleaning and maintenance").
• Room size is large or the outdoor air quality is poor.
For optimum purication performance, please close the
doors and windows when operating the air purier.
• There are indoor pollution resources. For instances,
smoking, cooking, incense, perfume or alchohol.
• Filter reaches the end of life. Replace the lter with a
new one.
The color of the
air quality light
always stays the
same.
• The particle sensor is dirty. Clean the particle sensor
(see the chapter "Cleaning and maintenance").
The appliance
produces a
strange smell.
• The rst few times you use the appliance, it may
produce a plastic smell. This is normal. However, if the
appliance produces a burnt smell even if removing
lters, contact your Philips dealer or an authorized
Philips service center. The lter may produce smell after
being used for a while because of the absorption of
indoor gases. It’s recommended that you reactivate the
lter by putting it in direct sunlight for repeated use. If
odor still exists, replace the lter.
The appliance is
extra loud.
• It's normal if the appliance runs at the Turbo mode.
• In the Auto mode, if the appliance is too loud, maybe
the appliance runs at high speed because air quality
becomes worse, or your personalized setting in App
triggers a higher fan speed. You can choose the Sleep
mode, or change the settings in the App.
• If there is abnormal sound, contact the Consumer Care
Center in your country.
• If anything drop into air outlet, it may also cause
abnormal loud sound. Immediate turn o appliance,
turn appliance upside down, to get foreign objectives
out of appliance.