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Problem
The cleaning perfor-
mance is poor.
Cleaning performance
is reduced.
The roller brush is not
rotating.
The operating noise is
changing during vacu-
uming.
The Electrobrush
switches itself off.
The vacuum cleaner
keeps falling over.
186
Possible cause and solution
The dust container is full.
Empty and clean the dust container (see "Mainte-
nance").
The Electrobrush is dirty/blocked.
Clean the Electrobrush (see "Maintenance" –
"Cleaning 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 Com-
fortClean 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 roller brush is dirty.
Clean the roller brush (see "Maintenance" –
"Cleaning the Electrobrush" and "Removing the
roller brush from the Electrobrush").
The Electrobrush power consumption is automati-
cally set to the optimum level based on the type of
flooring and roller brush used.
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.
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 vac-
uum cleaner").
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