Troubleshooting - Bosch OptiMUM MUM9 Series Instruction Manual

en Troubleshooting

Troubleshooting

In the following tables, you will find solutions for problems or faults which you can easily
rectify yourself. If a fault cannot be eliminated, please contact customer service.
Problem
Nothing shown on
display. Illuminated
ring is off.
Appliance cannot be
switched on.
Appliance does not
start.
The illuminated ring
lights up.
Appliance switches off
during use.
The swivel arm cannot
be opened.
Display
ERROR
MOTOR OVERLOAD
18
Possible cause
Appliance has no
power supply.
A safety system was
activated.
Too much food has
been processed
either at the same
time or for too long a
period.
Swivel arm was
opened.
Bowl or bevel gear
(accessory) has
become loose.
An accessory is fitted
to the red rear drive.
Possible cause
Too much food has
been processed
either at the same
time or for too long a
period.
The appliance or one
of the accessories is
blocked.
Motor defective.
Remedy
■ Check the power supply.
■ Plug the mains plug into the mains.
X "Safety systems" see page 17
■ Turn the rotary switch to y. Disconnect
the mains plug.
■ Reduce the processing quantity.
■ Allow the appliance to cool down to room
temperature.
■ Turn the rotary switch to y.
■ Press the release button and push the
swivel arm down until it locks into place.
■ Turn the rotary switch to y. Disconnect
the mains plug.
■ Tighten the bowl by turning until the stop.
■ Tighten the bevel gear and close the
locking lever completely.
■ Remove accessory.
■ Press the release button and open
the swivel arm.
Remedy
■ Turn the rotary switch to y. Disconnect
the mains plug.
■ Reduce the processing quantity.
■ Allow the appliance to cool down to
room temperature.
■ Turn the rotary switch to y. Disconnect
the mains plug.
■ Check appliance/accessories and rectify
the blockage.
If the message appears continuously, the
motor may be defective. Please contact the
customer service.