Hilti ST 1800-­A22 Manuel D'utilisation page 19

8.1 The metal construction screwdriver is not operational.
Trouble or fault
The metal construc-
tion screwdriver
doesn't start.
The control switch
can't be pressed, i.e.
the switch is locked.
The battery is not
heard to engage.
LED 1 blinks.
The screwdriver
doesn't work and
all four LEDs blink.
8.2 The metal construction screwdriver is operational.
Trouble or fault
Speed of rotation
drops considerably.
*2153707*
Printed: 05.06.2019 | Doc-Nr: PUB / 5293039 / 000 / 04
Possible cause
The battery is not fully
inserted.
The battery is
discharged.
Electrical fault.
The forward / reverse
switch is in the middle
position.
The retaining lugs on the
battery are dirty.
The battery is
discharged.
The battery is too hot.
The battery is too cold.
The product is over-
loaded (application limits
exceeded).
Possible cause
The battery is
discharged.
2153707
Action to be taken
▶ Push the battery in
until it engages with
an audible click.
▶ Charge the battery.
▶ Switch the metal con-
struction screwdriver
off immediately, re-
move the battery,
keep it under obser-
vation, allow it to cool
down and contact
HiltiService.
▶ Push the forward /
reverse switch to the
left or right.
▶ Clean the retaining
lugs and push the
battery in until it
engages. Contact
Hilti Service if the
problem persists.
▶ Charge the battery.
▶ Bring the battery to
the recommended op-
erating temperature.
▶ Bring the battery to
the recommended op-
erating temperature.
▶ Release the control
switch and then press
it again. Reduce the
load on the tool.
Action to be taken
▶ Charge the battery.
English 13