Fault
Possible cause
Remedy
No hammering action.
The power tool is too cold.
Allow the power tool to warm up to
the minimum operating temperature.
See section: 7.2.1 Working at low
temperatures
The function selector switch is set to
“Drilling without hammering”.
Set the function selector switch to
“Hammer drilling”.
The control switch can’t be
pressed, i.e. the switch is
locked.
The forward / reverse switch is in the
middle position (transport lock en-
gaged).
Push the forward / reverse switch to
the left or right.
The drive spindle doesn’t rotate. The permissible operating tempera-
ture of the power tool’s electronics
has been exceeded.
Allow the power tool to cool down.
The permissible battery operating
temperature has been exceeded.
Bring the battery to the
recommended working temperature.
The battery is discharged.
Change the battery and recharge the
discharged battery.
The power tool switches itself
off automatically.
The overload cut-out has been acti-
vated.
Release the control switch, reduce
the load on the power tool and then
press the switch again.
The battery runs down more
quickly than usual.
Battery condition is not optimal.
Have battery condition diagnosed by
Hilti Service or replace with a new
battery.
The battery doesn’t engage with
an audible double click.
The retaining lugs on the battery are
dirty.
Clean the retaining lugs and check
that the battery engages securely.
Contact Hilti Service if the problem
persists.
The power tool or the battery
gets very warm.
Electrical fault.
Switch the power tool off immedi-
ately, remove the battery and contact
Hilti Service.
The power tool has been overloaded
(application limits exceeded).
Use the right power tool for the job
(don’t use a low-powered tool for
heavy work).
The insert tool can’t be
released.
The chuck is not pulled back fully.
Pull the chuck back as far as it will go
and remove the insert tool.
The tool makes no progress.
The forward/reverse switch is set to
reverse rotation.
Set the forward/reverse switch to for-
ward rotation.
The power tool doesn’t start.
Power tool overloaded.
Switch off the power tool.
Remove the battery pack.
Do not continue to use the power
tool.
10 Disposal
CAUTION
Improper disposal of the equipment may have serious consequences: the burning of plastic components generates
toxic fumes which may present a health hazard. Batteries may explode if damaged or exposed to very high
temperatures, causing poisoning, burns, acid burns or environmental pollution. Careless disposal may permit
unauthorized and improper use of the equipment. This may result in serious personal injury, injury to third parties and
pollution of the environment.
CAUTION
Dispose of defective batteries without delay. Keep them out of reach of children. Do not attempt to open or dismantle
batteries and do not dispose of them by incineration.
CAUTION
Dispose of the batteries in accordance with national regulations or return them to Hilti.
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12
Printed: 07.07.2013 | Doc-Nr: PUB / 5140928 / 000 / 00
