Troubleshooting - Philips AP7766 User Manual

8 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
The appliance
does not work
even though it is
plugged in.
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.
Possible solution
The filter replacement light has been on continuously
but you have not replaced the corresponding filter. As a
result, the appliance is now locked. In this case, replace
the filter and reset the filter lifetime counter.
The pre-filter is dirty. Clean the pre-filter (see the
chapter "Cleaning").
• 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) Professional NanoProtect filter
series 7000B; 2) 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
"Cleaning").
The air quality sensor is dirty. Clean the air quality sensor
(see the chapter "Cleaning").
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