Philips AC4084 User Manual page 33

Problem
No air comes out of the
air outlet.
The fan speed does not
change when the silent
mode is activated.
The airflow that comes
out of the air outlet is
significantly weaker than
before.
The air quality does not
improve, even though
the appliance has been
operating for a long
time.
The color of the air
quality light always stays
the same.
I do not see water
vapor coming out of the
appliance. Is it working?
I want to check whether
the air humidity sensor
works or not.
Possible solution
Plug the appliance into the power supply and switch on.
In silent mode, the fan speed is set to a very low level. If you want
to change the fan speed and leave the silent mode, press the SPEED
button once or more times to set the desired fan speed.
•
The pre-filter is dirty. Clean the pre-filter (see the chapter 'Clean
your appliance', section ''Clean the pre-filter and humidification
filter').
• Make sure that you have removed all packaging material from the
filters.
•
One of the filters has not been placed in the appliance. Make sure
that all filters are properly installed in the following order, starting
with the innermost filter: 1) HEPA filter, 2) activated carbon filter,
3) Multi-care filter (if available), and 4) pre-filter.
• 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 the chapter 'Clean your appliance', section
''Clean the air quality sensor and air humidity sensor').
• The air quality sensor is dirty. Clean the air quality sensor (see the
chapter "Clean your appliance', section 'Clean the air quality sensor
and air humidity sensor' under).
•
There is not enough ventilation in the room. Open a window, to
improve the air circulation.
When water vapor is very fine, it is invisible. This appliance has a
specially designed humidification filter that produces very fine water
vapor. Therefore, you cannot see the water vapor.
Remove the cover of the air quality/humidity sensors and then
gently blow moist air into the opening. After a while, the CURRENT
HUMIDITY indication changes. Note that if the initial CURRENT
HUMIDITY indication is already 60%, the indication cannot show an
even higher humidity when you blow moist air towards the sensor.
EN
33