9 Troubleshooting
Fault
Possible cause
Remedy
The power tool does not run.
The battery is discharged or fitted
incorrectly.
The battery must be heard to engage
with a double click or, respectively,
needs to be charged.
Electrical fault.
Remove the battery from the power
tool and contact Hilti Service.
The battery is discharged/hot.
Deep discharge prevention / the elec-
tronics switch off. Insert the battery in
the charger or allow it to cool down.
The on / off button can not
be pressed, i.e. the button is
locked.
Not a fault (safety function).
Press the switch-on interlock.
Running speed suddenly drops
considerably.
The saw blade jams.
Keep the saw blade running straight.
Chips are not transported into
the chip collector and thus fall
onto the base plate.
The chip collector is full or the chip
deflector is blocked.
Empty the chip collector and/or clean
the chip ejector channel.
The saw blade stalls.
Saw advance pressure is too high.
Reduce advance pressure and restart
the saw.
The tool doesn’t work and all 4
LEDs blink.
The power tool has been overloaded.
Release the control switch and press
it again.
The overheating prevention cut-out
has been activated.
Allow the power tool to cool down.
Clean the ventilation slots.
The power tool doesn’t run and
1 LED blinks.
The battery is discharged.
Change the battery and recharge the
discharged battery.
The battery is too hot or too cold.
Bring the battery to the recommen-
ded working temperature.
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 does not 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
becomes 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).
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.
en
12
Printed: 08.07.2013 | Doc-Nr: PUB / 5142667 / 000 / 01
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