Problem
The operating noise is
changing during vacu-
uming.
The Electrobrush
switches itself off.
The roller brush is not
rotating.
Cleaning performance
is reduced.
The cleaning perform-
ance is poor.
The vacuum cleaner
keeps falling over.
Cause and remedy
The Electrobrush power consumption is automatic-
ally set to the optimum level based on the type of
flooring.
The noise is not unusual – the vacuum cleaner is
functioning normally.
The Electrobrush is overloaded – this can happen on
surfaces like deep-pile carpet.
Switch the vacuum cleaner off and switch it on
again at a reduced suction power level. Use the
On/Off switch on the Comfort handle to do this.
The roller brush is dirty.
Clean the roller brush (see "Maintenance – Clean-
ing the Electrobrush" and "Removing the roller
brush from the Electrobrush").
The fine dust filter/pre-filter is soiled.
Run the interim cleaning function for the fine dust
filter (see "Maintenance – Activating the Comfort-
Clean function").
Clean both filters thoroughly (see "Maintenance –
Cleaning the pre-filter and fine dust filter").
The fine dust filter is worn.
Insert a new fine dust filter (HX FSF-2).
The dust container is full.
Empty and clean the dust container (see "Mainten-
ance").
The Electrobrush is dirty/blocked.
Clean the Electrobrush (see "Maintenance –
Cleaning the Electrobrush" and "Removing the
roller brush from the Electrobrush").
You have configured the vacuum cleaner with the
PowerUnit at the top.
Reassemble the vacuum cleaner so that it is con-
figured with the PowerUnit at the bottom (see "In-
stallation and connection – Assembling the va-
cuum cleaner").
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