Troubleshooting - Hilti SF 8M-A22 Manual

▶ Prior to each use and before and after prolonged storage, check the product and the batteries for
damage.
9

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.
Trouble or fault
Product does not work.
Product does not work and all
four LEDs flash.
Product does not work and
one LED flashes.
The on/off button cannot be
pressed, i.e. the button is
locked.
The battery runs down more
quickly than usual.
The battery does not engage
with an audible double click.
The product or battery gets
very hot.
10 Disposal
WARNING
Risk of injury due to incorrect disposal! Health hazards due to escaping gases or liquids.
▶ DO NOT send batteries through the mail!
▶ Cover the terminals with a non-conductive material (such as electrical tape) to prevent short circuiting.
▶ Dispose of your battery out of the reach of children.
▶ Dispose of the battery at your Hilti Store, or consult your local governmental garbage disposal or public
health and safety resources for disposal instructions.
Most of the materials from which Hilti products 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 sales representative for further information.
*2065390*
Possible cause
The battery is not fully inserted.
Battery is discharged.
Product momentarily overloaded.
The overheating cut-out has been
activated.
Battery is discharged.
The battery is too hot or too cold.
The forward/reverse switch is in
the middle position.
Very low ambient temperature.
The retaining lugs on the battery
are dirty.
Electrical fault.
The product is overloaded (appli-
cation limits exceeded).
2065390
Action to be taken
▶ Push the battery in until it
engages with an audible double
click.
▶ Change the battery and charge
the empty battery.
▶ Release the control switch and
then press it again.
▶ Allow the product to cool down.
Clean the air vents.
▶ Change the battery and charge
the empty battery.
▶ Bring the battery to the recom-
mended operating temperature.
▶ Push the forward/reverse switch
to the left or right.
▶ Allow the battery to warm up
slowly to room temperature.
▶ Clean the retaining lugs and
push the battery in until it
engages. Contact Hilti Service
if the problem persists.
▶ Switch the product off immedi-
ately, remove the battery, keep
it under observation, allow it
to cool down and 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.
English 11