Troubleshooting - Hilti TE 4-A18 Mode D'emploi

6.3 Care of the Li‑ion battery
NOTE
Battery performance drops at low temperatures.
NOTE
Store the battery in a cool and dry place.

7 Troubleshooting

Fault
The power tool doesn't run and
1 LED blinks.
The tool doesn't work and all 4
LEDs blink.
The power tool doesn't run.
No hammering action.
The control switch can't be
pressed, i.e. the switch is
locked.
The drive spindle doesn't rotate.
The power tool switches itself
off automatically.
The battery runs down more
quickly than usual.
The battery doesn't engage with
an audible double click.
The power tool or the battery
gets very hot.
In order to achieve maximum battery life, stop using the
battery as soon as a significant drop in battery perfor-
mance is noticed.
NOTE
- If use continues, further battery discharge will be
- Charge the batteries using the specified and approved
Possible cause
The battery is discharged.
The battery is too hot or too cold.
The power tool has been overloaded.
The battery is discharged or is not
pushed all the way in.
Electrical fault.
The tool is too cold.
The function selector switch is set to
"Drilling without hammering".
The forward/reverse switch is set to
reverse rotation.
The forward / reverse switch is in the
middle position (transport lock en-
gaged).
The permissible operating tempera-
ture of the power tool's electronics
has been exceeded.
The maximum permissible battery
operating temperature has been ex-
ceeded.
The battery is discharged.
The overload cut-out has been acti-
vated.
Very low ambient temperature.
The retaining lugs on the battery are
dirty.
Electrical fault.
stopped automatically before the battery cells suffer
damage.
Hilti battery chargers for Li‑ion batteries.
Remedy
Change the battery and charge the
empty battery.
Bring the battery to the
recommended working temperature.
Release the control switch and press
it again.
The battery must be heard to engage
with a double click or, respectively,
needs to be charged.
Remove the battery from the tool and
contact Hilti Service.
Bring the power tool to the operating
temperature by pressing the insert
tool lightly against the work surface
and allowing the power tool to run
briefly under no load.
Set the function selector switch to
"Hammer drilling".
Set the forward/reverse switch to for-
ward rotation.
Push the forward / reverse switch to
the left or right.
Allow the power tool to cool down.
Bring the battery to the
recommended operating temperature.
Change the battery and charge the
empty battery.
Release the control switch, reduce
the load on the power tool and then
press the switch again.
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 power tool off immedi-
ately, remove the battery from the
tool and allow it to cool down while
keeping an eye on it, contact Hilti
Service.
en
7