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Trouble or fault
The power tool doesn't start
and the service indicator
lights red.
No hammering action.
The power tool doesn't start.
The power tool starts and the
service indicator lights red.
The tool does not achieve full
power.
The chisel cannot be released
from the chuck.
9
Disposal
Most of the materials from which Hilti tools and appliances are manufactured can be recycled. The
materials must be correctly separated before they can be recycled. In many countries, your old tools,
machines or appliances can be returned to Hilti for recycling. Ask Hilti Service or your Hilti representative
for further information.
20
English
Possible cause
The carbon brushes are worn.
A fault has occurred in the tool.
The power tool is too cold.
A fault has occurred in the tool.
Electronics initialization in progress
(takes up to 1 second after plug-
ging in) or the electronic restart
safety interlock has been activated
after an interruption in the electric
supply.
Interruption in the electric supply.
The supply cord or plug is defec-
tive.
The control switch is defective.
Generator in sleep mode
The service indicator lights.
Power reduction is active.
The extension cord is too long or
its gauge is inadequate.
The voltage provided by the elec-
tric supply is too low.
The chuck is not pulled back fully.
Action to be taken
▶ Have the parts checked by a
trained electrical specialist and
replaced if necessary.
▶ Have the tool repaired by Hilti
Service.
▶ Bring the tip of the drill bit
or chisel into contact with the
workpiece and allow the power
tool to run under no load until it
reaches the minimum operating
temperature.
▶ Have the tool repaired by Hilti
Service.
▶ Switch the power tool off and
then on again.
▶ Plug in another power tool or
appliance and check whether it
works.
▶ Have the parts checked by a
trained electrical specialist and
replaced if necessary.
▶ Have the power tool checked by
a trained electrical specialist and
the carbon brushes replaced if
necessary.
▶ Apply a load to the generator
by connecting a second power
consumer (e.g. worklight).
▶ Have the power tool serviced or
repaired by Hilti Service.
▶ Press the power level selector
switch (observe the power level
indicator). Switch the power
tool off and then on again.
▶ Use an extension cord with
an adequate conductor cross
section. (1.5 mm² for lengths up
to 40 m; 2.5 mm² for lengths up
to 65 m).
▶ Connect the power tool to a
different electric supply.
▶ Pull the chuck back as far
as it will go and remove the
accessory tool.
2064795
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