Philips AC4012 - 9 Troubleshooting; Troubleshooting Common Problems

18
9 Troubleshooting
This chapter summarizes the most common
problems you could encounter with the purier.
If you are unable to solve the problem with the
information below, contact the Consumer Care
Center in your country.
Problem Possiblesolution
The light has been on
continuously.
The lter is full. Replace the lter and reset the purier.
No air comes out of the air
outlet.
The purier is not connected to the power supply. Plug the purier
into the power supply and switch on.
The fan speed does not
change when the sleep
mode is activated.
In sleep mode, the fan speed is set to a very low level. If you want to
change the fan speed, press the button one or more times to set
the desired fan speed.
The airow that comes
out of the air outlet is
signicantly weaker than
before.
The pre-lter is dirty. Clean the pre-lter (see ‘Clean the pre-lter’).
You have not removed all packaging material from the lters. Make
sure that you have removed all packaging material.
The air quality does not
improve, even though the
purier has been operating
for a long time.
One of the lters has not been placed in the purier. Make sure that
all lters are properly installed in the following order, starting with
the innermost lter: 1) HEPA lter, 2) activated carbon lter, and 3)
pre-lter.
The air quality sensor is wet. The humidity level in your room is high
and causes condensation. Make sure that the air quality sensor is
clean and dry (see ‘Clean the air quality sensor’).
The color of the air quality
light always stays the same.
The air quality sensor is dirty. Clean the air quality sensor (see ‘Clean
the air quality sensor’).
There is not enough ventilation in the room. Open a window, to
improve the air circulation.
I need cleaner air because I
have an allergy.
You can change the air quality sensor sensitivity (see ‘Set the
sensitivity of the air quality sensor’) to make the purier clean the air
even better.
The purier is extra loud. You have not removed all packaging material from the lters. Make
sure that you have removed all packaging material.
You can change the fan speed to lower fan speed level.
The purier still indicates
that I need to replace a lter,
but I already did.
Perhaps you did not press the button properly. Plug in the purier,
press the

button and press and hold the button for 2 seconds.
EN