WERTHEIM 7 Series Instruction Manual page 21

Fault Solutions
Powerhead not Check that the on/off button is in the "ON" position.
working. Check the installation of the powerhead is correct.
Remove the power brush and clean any big objects
trapped around the roller bar.
Check there is no object pressing the top of the
powerhead.
Check through the powerhead belt window that the
powerhead belt is not broken.
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