Operating Instruction ST 1800 A22 (01)

20 English
Trouble or fault Possible cause Action to be taken
LED 1 blinks. The battery is
discharged.
▶ Charge the battery.
The battery is too hot. ▶ Bring the battery to
the recommended op-
erating temperature.
The battery is too cold. ▶ Bring the battery to
the recommended op-
erating temperature.
The screwdriver
doesn’t work and
all four LEDs blink.
The product is over-
loaded (application limits
exceeded).
▶ Release the control
switch and then press
it again. Reduce the
load on the tool.
8.2 The metal construction screwdriver is operational.
Trouble or fault Possible cause Action to be taken
Speed of rotation
drops considerably.
The battery is
discharged.
▶ Charge the battery.
The metal construc-
tion screwdriver or
battery gets very
hot.
Electrical fault. ▶ 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.
The screw is
pressed too tightly
against the surface.
The depth gauge is set
incorrectly.
▶ Turn the depth gauge
to the right.
The screw is not
pressed tightly
enough against the
surface.
The depth gauge is set
incorrectly.
▶ Turn the depth gauge
to the left.
The screwdriver runs
but the screw can’t
be driven.
The wrong direction of
rotation is set.
▶ Set the
forward/reverse
switch to the desired
direction of rotation.
9 Disposal
Most of the materials from which Hilti tools and appliances are manu-
factured can be recycled. The materials must be correctly separated before
they can be recycled. In many countries, your old tools, machines or appli-
Printed: 05.06.2019 | Doc-Nr: PUB / 5293030 / 000 / 04