Problem
Causes
The filter unit has not been
assembled properly.
The dust compartment is full.
The filter unit is dirty.
ENGLISH
Solutions
Assemble the inner and outer
filter onto the filter holder. See
chapters 'Cleaning' and
'Replacement' for instructions
about assembling the filter
unit.
Empty the dust compartment
(see chapter 'Cleaning',
section 'Emptying the dust
compartment').
Clean the filter unit (see
chapter 'Cleaning', section
'Emptying the dust
compartment').
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