16 | English
1 609 92A 0KD | (7.5.14) Bosch Power Tools
In case of greater deviation, the measuring tool must be recal-
ibrated. For this, press and hold the grade measurement but-
ton 3. Follow the directions on the display.
To end the “Measuring rail” operating mode, switch the meas-
uring tool off and remove it from the measuring rail.
Troubleshooting – Causes and Corrective
Measures
The measuring tool monitors the correct
function for each measurement. When a de-
fect is determined, only the symbol shown
aside flashes in the display. In this case, or
when the above mentioned corrective
measures cannot correct an error, have the measuring tool
checked by an after-sales service agent for Bosch power
tools.
Cause Corrective Measure
Temperature warning indicator (k) flashing; measure-
ment not possible
The measuring tool is outside the
operating temperature range from
– 10 °C to + 50 °C (in the function
continuous measurement up to
+40 °C).
Wait until the measuring
tool has reached the op-
erating temperature
“ERROR” indication in the display
Addition/Subtraction of measured
values with different units of meas-
ure
Only add/subtract
measured values with
the same units of meas-
ure
The angle between the laser beam
and the target is too acute.
Enlarge the angle be-
tween the laser beam
and the target
The target surface reflects too in-
tensely (e.g. a mirror) or insuffi-
ciently (e.g. black fabric), or the
ambient light is too bright.
Work with the laser tar-
get plate 28 (accessory)
The laser beam outlet 16 or the re-
ception lens 17 are misted up
(e.g. due to a rapid temperature
change).
Wipe the laser beam out-
let 16 and/or the recep-
tion lens 17 dry using a
soft cloth
Calculated value is greater than
999999 m/m
2
/m
3
.
Divide calculation into
intermediate steps
Indication “>60 °” or “<–60 °” on the display
The inclination measuring range
for the measuring mode and/or the
reference plane has been exceed-
ed.
Carry out the measure-
ment within the speci-
fied angle range.
“CAL” and “ERROR” indication in the display
The calibration of the grade meas-
urement was not carried out in the
correct sequence or in the correct
positions.
Repeat the calibration
according to the instruc-
tions on the display and
in the operating instruc-
tions.
The surfaces used for the calibra-
tion were not accurately aligned
(horizontal or vertical).
Repeat the calibration
on a horizontal or verti-
cal surface; if required,
check the surface first
with a level.
The measuring tool was moved or
tilted while pressing the button.
Repeat the calibration
and hold the measuring
tool in place while press-
ing the button.
Battery charge-control indicator (g), temperature warn-
ing (k) and “ERROR” indication in the display
Temperature of the measuring tool
not within the allowable charge-
temperature range
Wait until the charge-
temperature range is
reached.
Battery charge-control indicator (g) and “ERROR” indi-
cation in the display
Battery charging voltage not
correct
Check if the plug-in con-
nection has been estab-
lished correctly and if
the battery charger is
operating properly.
When the unit symbol is
flashing, the battery is
defective and must be
replaced by a Bosch af-
ter-sales service.
Battery charge-control indicator (g) and clock symbol (f)
in the display
Charge duration clearly too long,
as charging current too low.
Only use the original
Bosch charger.
Measuring result not plausible
The target surface does not reflect
correctly (e.g. water, glass).
Cover off the target sur-
face
The laser beam outlet 16 or the re-
ception lens 17 are covered.
Make sure that the laser
beam outlet 16 or the re-
ception lens 17 are un-
obstructed
Wrong reference level set Select reference level
that corresponds to
measurement
Obstruction in path of laser beam Laser point must be
completely on target
surface.
The indication remains unchanged or the measuring tool
reacts unexpectedly after pressing a button
Software error Press the measuring
button 2 and the button
for clearing the internal
memory / On/Off 8 to re-
set the software.
Cause Corrective Measure
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