Error – Cause and Correction
Error/Indication
The unit can not be
switched on.
The unit is switched
on but no longer react
to inputs.
The display is dark.
Maintenance and Cleaning
Before each use, check the unit. For visible damage or loose
parts in the interior of the unit, reliable functioning is no longer
ensured.
Always keep the unit clean and dry.
Wipe off dirt with a damp soft cloth. Do not use aggressive cleaning
agents or solvents. Wipe dry before renewed usage.
Replacing Wheels
Replace defective or heavily worn wheels. For this purpose, loosen the
screw 1 with a Torx screwdriver (size 7), replace the wheel 2 and firmly
retighten the screw 1.
If the unit should fail despite the care taken in manufacture and testing,
repair should be carried out by an authorised customer services agent
for Bosch power tools.
For all correspondence and spare parts orders, always include the 10-
digit order number of the unit.
In case of repair, send in the unit in the protective bag 14.
1 609 929 C66 • (02.03) T
Cause
Batteries are empty.
Batteries have been
inserted
with
wrong polarity.
The unit is too hot,
e.g. subjected to di-
rect sunlight.
The
unit
was
moved over the wall in
a straight line or the in-
dividual wheels had
no contact with the
wall.
External
influences
such
as
phones,
microwave
equipment or mobile
communication masts
are interfering with the
measurement.
The temperature is
too low.
The temperature is
too high.
English–6
Correction
Insert new batteries.
Check the batteries
the
for correct position.
Remove and reinsert
the batteries.
Wait until the allowa-
ble temperature range
is reached.
not
Move the unit again
over the wall in a
straight line while tak-
ing care that all wheels
are in contact with the
wall.
Switch off interference
mobile
when possible. Begin
a new measurement
by
"start" button 6.
Wait until the allowa-
ble temperature range
is reached.
Wait until the allowa-
ble temperature range
is reached.
pressing
the