Troubleshooting - Hilti TE 4-A18 Mode D'emploi

9 Troubleshooting

Fault
The power tool doesn't run.
The power tool doesn't run and
1 LED blinks.
The tool doesn't work and all 4
LEDs blink.
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 warm.
The insert tool can't be
released.
The tool makes no progress.
Possible cause
The battery is discharged or fitted
incorrectly.
Electrical fault.
The battery is too hot or too cold.
The battery is discharged.
The battery is too hot or too cold.
The power tool has been overloaded.
The overheating prevention cut-out
has been activated.
The power 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 permissible battery operating
temperature has been exceeded.
The battery is discharged.
The overload cut-out has been acti-
vated.
Battery condition is not optimal.
The retaining lugs on the battery are
dirty.
Electrical fault.
The power tool has been overloaded
(application limits exceeded).
The chuck is not pulled back fully.
The forward/reverse switch is set to
reverse rotation.
Remedy
The battery must be heard to engage
with a double click or, respectively,
needs to be charged.
Remove the battery from the power
tool and contact Hilti Service.
Bring the battery to the
recommended working temperature.
Change the battery and recharge the
discharged battery.
Bring the battery to the
recommended working temperature.
Release the control switch and press
it again.
Allow the power tool to cool down.
Clean the ventilation slots.
Allow the power tool to warm up to
the minimum operating temperature.
See section: 7.2.1 Working at low
temperatures
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 working temperature.
Change the battery and recharge the
discharged battery.
Release the control switch, reduce
the load on the power tool and then
press the switch again.
Have battery condition diagnosed by
Hilti Service or replace with a new
battery.
Clean the retaining lugs and check
that the battery engages securely.
Contact Hilti Service if the problem
persists.
Switch the power tool off immedi-
ately, remove the battery and contact
Hilti Service.
Use the right power tool for the job
(don't use a low-powered tool for
heavy work).
Pull the chuck back as far as it will go
and remove the insert tool.
Set the forward/reverse switch to for-
ward rotation.
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