Fault
Possible cause
Remedy
No hammering action.
The tool is too cold.
Bring the power tool to the operating
temperature by pressing the insert
tool lightly against the work surface
and allowing the power tool to run
briefly under no load.
A fault has occurred in the power tool. If necessary, the power tool should be
repaired by Hilti Service.
The power tool doesn’t start
and the service indicator lights
red.
The carbon brushes are worn.
Have it checked by a trained electrical
specialist and replaced if necessary.
A fault has occurred in the power tool. If necessary, the power tool should be
repaired by Hilti Service.
The power tool starts and the
service indicator lights red.
Lights when servicing is due (end of
service interval).
Have the power tool serviced or re-
paired by Hilti Service.
The power tool does not
achieve full power.
Power reduction is active. The yellow
LED lights.
Press the power level selector switch
(observe the power level indicator).
Switch the power tool off and on
again.
The extension cord is too long or its
gauge is inadequate.
Use an extension cord with an ade-
quate conductor cross section (1.5
mm² for lengths up to 40 m; 2.5 mm²
for lengths up to 65 m).
The voltage provided by the electric
supply is too low.
Connect the power tool to a different
power source.
The chisel can’t be released
from the chuck.
The chuck is not pulled back fully.
Pull the chuck back as far as it will go
and remove the insert tool.
NOTE
If the fault cannot be eliminated by the measures listed above, have the power tool checked by Hilti Service.
9 Disposal
Most of the materials from which Hilti power tools or appliances are manufactured can be recycled. The materials
must be correctly separated before they can be recycled. In many countries, Hilti has already made arrangements for
taking back your old power tools or appliances for recycling. Please ask your Hilti customer service department or
Hilti representative for further information.
10 Manufacturer’s warranty - tools
Please contact your local Hilti representative if you have
questions about the warranty conditions.
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Printed: 14.10.2015 | Doc-Nr: PUB / 5210095 / 000 / 01
