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7 Troubleshooting
This chapter summarizes 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 Center in your country.
Problem Possible solution
The appliance
does not work
even though it is
plugged in.
• The lter replacement code has been displaying on the
screen but you have not replaced the corresponding lter
yet. The appliance will be locked if you keep using the
expired lter. In this case, replace the lter and reset the
lter lifetime counter.
The appliance
does not work
even though it is
switched on.
• The lter replacement code has been on continuously but
you have not replaced the corresponding lter, and the
appliance is now locked. In this case, replace the lter and
reset the lter lifetime counter.
The appliance
accidentally
powers o.
• The appliance restarts automatically and goes to the
previous mode when the power resumes.
The airow that
comes out of
the air outlet
is signicantly
weaker than
before.
• The pre-lter is dirty. Clean the pre-lter (see chapter
"Cleaning").
The air quality
does not improve,
even though the
appliance has
been operating for
a long time.
• One of the lters has not been placed in the appliance.
Make sure that all lters are properly installed in the
following order, starting with the innermost lter:
1) NanoProtect lter Series 3; 2) 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 chapter "Cleaning").
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").
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