You may not have put the filter
unit in the dust compartment.
Never use the appliance without
the filter unit.
Perhaps the filter unit is not placed
properly in the dust compartment.
Place the filter unit properly the
dust compartment.
Perhaps the amount of liquid in the
dust compartment exceeds the
maximum indication.Empty the
dust compartment immediately
and dry it. Never let the dust
compartment fill up with liquid
beyond the maximum indication.