Miele HS23 Operating Instructions Manual page 33

Problem
The operating noise is
changing during vacu-
uming.
The electrobrush
switches itself off.
The roller brush is not
rotating.
Cause and remedy
The airways are soiled.
 Clean all the airways.
The electrobrush power rating is automatically 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 on again. Use
the On/Off switch on the handle to do this.
The roller brush is dirty.
 Clean the roller brush (see "Cleaning and care" –
"Cleaning the electrobrush" and "Removing the
roller brush from the electrobrush").
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