Safety Systems; Troubleshooting - Bosch VitaBoost MMBH4 series Instruction Manual

Safety systems

Start lock-out and
automatic cut-out
The appliance can only be operated if the
blender jug has been correctly positioned
and if the rotary selector is turned to
the zero setting when switching on the
appliance or after an interruption in the
power supply. The appliance will switch off
automatically if the blender jug becomes
detached while it is running. The appliance
automatically switches off in manual mode
(speed min – max) after 5½ minutes of
continuous operation. X "Troubleshooting"
see page 21
Overload protection
The motor switches off automatically if the
appliance overheats. X "Troubleshooting"
see page 21
Note: When activating the overload
protection, a slightly strange smell may
occur. This is not a sign of malfunction.

Troubleshooting

W Risk of injury!
Before dealing with any faults, unplug the
mains plug.
Note: The appliance will no longer
switch on if there is an error in appliance
operation, if the electronic fuses trip or the
appliance has a defect. First try to eliminate
the problem which has occurred with
the help of the following information.
Caution!
If a fault cannot be eliminated, please
contact customer service.
Fault
Appliance fails to start up or switches off
while in use. The status display flashes.
Possible causes
– Blender jug is not correctly positioned,
has become detached or has been
removed.
– Rotary selector was not at the zero
setting when switching on or after an
interruption in power.
– The appliance was operating
continuously in manual mode (speed
min – max) for longer than 5½ minutes.
Remedy
■ Switch off the appliance with the on/off
switch.
■ Position the blender jug correctly.
■ Turn the rotary selector in an
anticlockwise direction as far as it will go
(zero setting).
■ Switch on the appliance with the on/off
switch. The status display lights up.
Fault
Appliance fails to start up or switches off
while in use.
Possible cause
The overload protection device is activated.
Remedy
■ Turn the rotary selector in an
anticlockwise direction as far as it will go
(zero setting).
■ Switch off the appliance with the on/off
switch. Disconnect the mains plug.
■ Remove the blender jug.
■ Leave the appliance to cool for approx.
15-20 minutes and then switch it on
again.
■ If the appliance does not start, turn the
appliance upside down. Press the reset
button on the bottom (X Fig. A - 1c).
■ If the reset button is blocked, leave the
appliance to cool again and try it again
later.
Safety systems en
21