Hilti TE 4-A22 Mode D'emploi page 14

9 Troubleshooting
9.1 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.
9.2 The rotary hammer is not in working order
Malfunction
The LEDs indicate nothing.
1 LED blinks.
4 LEDs blink.
9.3 The rotary hammer is in working order
Trouble or fault
No hammering action.
The control switch can't be
pressed, i.e. the switch is
locked.
The drive spindle does not
rotate.
The rotary hammer switches
itself off automatically.
The battery runs down more
quickly than usual.
The battery does not en-
gage with an audible "double
click".
The rotary hammer or the
battery gets very hot.
10 English
Possible cause
The battery is not fully inserted.
Battery is discharged.
Battery is discharged.
The battery is too hot or too cold.
The rotary hammer has been over-
loaded briefly.
Possible cause
The rotary hammer is too cold.
The function selector switch is set
to "Drilling without hammering"
The rotary hammer has been set to
reverse rotation.
The forward / reverse switch is in
the middle position.
The permissible operating temper-
ature of the rotary hammer's elec-
tronics has been exceeded.
Battery is discharged.
The overload cut-out has been
activated.
Very low ambient temperature.
The retaining lugs on the battery
are dirty.
Electrical fault.
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.
Action to be taken
▶ Bring the tip of the drill bit
into contact with the working
surface, switch the rotary
hammer on and allow it to
run. If necessary, repeat the
procedure until the hammering
mechanism begins to operate.
▶ Set the function selector switch
. to "Hammer drilling"
▶ Move the forward / reverse
selector switch to the "Forward"
position.
▶ Push the forward / reverse
switch to the right or left.
▶ Allow the rotary hammer to cool
down.
▶ Change the battery and charge
the empty battery.
▶ Release the control switch.
Allow the rotary hammer to cool
down. Press the control switch
again. Reduce the load on the
tool.
▶ Allow the battery to warm up
slowly to room temperature.
▶ Clean the retaining lugs and refit
the battery.
▶ Switch off the rotary hammer
immediately. Remove the
battery and keep it under
observation. Allow it to cool
down. Contact Hilti service.
2153716
*2153716*
.