Troubleshooting - Philips AC4074 Manual De Instrucciones

Problem
The appliance doesn't
work.
No air comes out of the
air outlet
The fan speed does not
change when the auto
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 colour of the air
quality light ring and the
air quality light always
stays the same.
I need cleaner air because
I have an allergy.
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Troubleshooting

This chapter summarises the most common problems you could
encounter with the appliance. If you are unable to solve the problem with
the information below, contact the Consumer Care Centre in your country.
Possible solution
You ignored the filter replacement alerts. You did not replace the filter
when the filter replacement light started flashing and did not respond when
the appliance started to beep every 30 minutes after approx. 2 weeks. As
a result, the appliance is now locked and you have to replace the filter and
reset the appliance (see chapter 'Filter replacement') so that the appliance
can operate again.
The appliance is not switched on. Put the plug in the wall socket and switch
on the appliance.
The air quality is good and the auto mode is activated. In this case, the
appliance switches off automatically when the air is clean to save electricity.
When the room becomes dark, the night mode is activated automatically
when the appliance is in auto mode. In this case, the fan speed is set to a
very low level. If you want to change the fan speed, press the fan speed
button one or more times to set the desired fan speed.
The pre-filter is dirty. Clean the pre-filter (see chapter 'Cleaning').
You haven't removed all packaging material from the filters. Make sure that
you have removed all packaging material.
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) formaldehyde
filter (supplied with AC4074) or multi-care filter (supplied with AC4072), 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 chapter 'Cleaning').
The room in which you run the appliance is larger than 55m², which is the
maximum size at which this air cleaner can operate effectively.
The air quality sensor is dirty. Clean the air quality sensor (see
chapter 'Cleaning').
There is not enough ventilation in the room. Open a window, to improve
the air circulation.
You can change the air quality sensor sensitivity (see chapter 'Using the
appliance') to make the air cleaner clean the air even better.
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18-09-09 14:17