Troubleshooting - Hilti SCM 22-A Operating Instructions Manual

7 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.
7.1 The circular saw is not in working order.
Malfunction
The LEDs indicate nothing.
1 LED blinks.
4 LEDs blink.
7.2 The circular saw is in working order.
Trouble or fault
The on/off button cannot be
pressed, i.e. the button is
locked.
Running speed suddenly
drops considerably.
Chips / cuttings are not trans-
ported into the chip collector
and thus fall onto the base
plate.
The saw blade stalls.
The battery runs down more
quickly than usual.
The battery does not en-
gage with an audible "double
click".
The circular saw or battery
gets very hot.
24
Possible cause
The battery is not fully inserted.
The battery is discharged.
The battery is discharged.
The battery is too hot or too cold.
The circular saw was overloaded
briefly.
The overheating prevention cut-out
has been activated.
Possible cause
Not a fault (safety function).
The saw blade jams.
The chip collector is full.
The chip ejector channel is
blocked.
Saw advance pressure is too high.
Very low ambient temperature.
The retaining lugs on the battery
are dirty.
Electrical fault.
The product is overloaded (appli-
cation limits exceeded).
Action to be taken
▶ Push the battery in until it
engages with a double click.
▶ Change the battery and charge
the empty battery.
▶ Change the battery and charge
the empty battery.
▶ Bring the battery to the recom-
mended working temperature.
▶ Release the control switch and
then press it again.
▶ Allow the circular saw to cool
down to cool down and clean
the air vents.
Action to be taken
▶ Press the safety lock.
▶ Do not tilt the saw blade.
▶ Empty the chip collector.
▶ Clean the chip ejector channel.
▶ Reduce advance pressure and
switch the product back on.
▶ Allow the battery to warm up
slowly to room temperature.
▶ Clean the retaining lugs and refit
the battery.
▶ Switch off the circular saw
immediately. Remove the
battery and keep it under
observation. Allow it to cool
down. Contact Hilti service.
▶ Pay attention to the power
and performance rating of the
product before using it, i.e
check its suitability for the job
on hand. See "Technical data"
section.