9. Troubleshooting
Fault Possible cause Remedy
The power tool
doesn’t run.
The battery is discharged or fitted
incorrectly.
The battery needs to be charged or,
respectively, it must be heard to engage
with a double click.
Electrical fault. Remove the battery from the power tool
and contact Hilti.
The on / off switch
can’t be pressed,
i.e. the switch is
locked.
The forward / reverse switch is in the
middle position (transport lock engaged).
Push the forward / reverse switch to the
left or right.
Running speed
suddenly drops
considerably.
The battery is discharged.
Change the battery and recharge the
discharged battery.
The battery runs
down more quickly
than usual.
Battery condition is not optimal. Have the battery condition checked by
Hilti or replace the battery.
The battery doesn’t
engage with an
audible 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 become
very warm.
Electrical fault. Switch the power tool off immediately,
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).
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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