*2153714*
2153714 English 13
8 Troubleshooting
▶ If the trouble you are experiencing is not listed in this table or you are unable to remedy the problem by
yourself, please contact Hilti Service.
8.1 The circular saw is not in working order.
Malfunction Possible cause Action to be taken
The LEDs indicate nothing. The battery is not fully inserted. ▶ Insert the battery.
The battery is discharged. ▶ Charge the battery.
The battery is too hot or too cold. ▶ Bring the battery to the correct
ambient temperature.
1 LED blinks. The battery is discharged. ▶ Charge the battery.
The battery is too hot or too cold. ▶ Bring the battery to the correct
ambient temperature.
4 LEDs blink. The circular saw was overloaded
briefly.
▶ Release the control switch and
then press it again.
The overheating prevention cut-out
has been activated.
▶ Allow the circular saw to cool
down to cool down and clean
the air vents.
8.2 The circular saw is in working order.
Trouble or fault Possible cause Action to be taken
The on/off button cannot be
pressed, i.e. the button is
locked.
Not a fault (safety function). ▶ Press the switch-on interlock.
Running speed suddenly
drops considerably.
The battery is discharged. ▶ Charge the battery.
Saw advance pressure is too high. ▶ Reduce advance pressure and
switch the product back on.
The battery runs down more
quickly than usual.
Battery condition is not optimal. ▶ Replace the battery.
The product doesn’t restart
by itself after the saw blade
has stalled.
The overload cut-out has been
activated.
▶ Press the switch-on interlock
and the on/off button again.
The battery does not en-
gage with an audible "double
click".
The retaining lugs on the battery
are dirty.
▶ Clean the retaining lugs and refit
the battery.
The circular saw or battery
gets very hot.
Electrical fault. ▶ Switch off the circular saw
immediately. Remove the
battery and keep it under
observation. Allow the battery
to cool down. Contact Hilti
service.
The product is overloaded (appli-
cation limits exceeded).
▶ Select a tool that is suitable for
its intended use.
No suction power or reduced
suction power
The chip ejector channel is
blocked.
▶ Clean the chip / dust channel.
→ page 11
9 Disposal
Most of the materials from which Hilti tools and appliances are manufactured can be recycled. The
materials must be correctly separated before they can be recycled. In many countries, your old tools,
machines or appliances can be returned to Hilti for recycling. Ask Hilti Service or your Hilti representative
for further information.
Battery disposal
Improper disposal of batteries can result in health hazards from leaking gases or fluids.
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