Fault
No hammering action.
en
The power tool doesn't start
and the LED blinks red.
The power tool doesn't start
and the LED lights red.
The power tool doesn't start
and the indicator lamp blinks
yellow.
The power tool doesn't achieve
full power.
The drill bit doesn't rotate.
The drill bit / chisel can't be
released from the chuck.
10. 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.
30
Printed: 27.05.2013 | Doc-Nr: PUB / 5071058 / 000 / 00
Possible cause
The power tool is too cold.
The function selector switch is set
to "Drilling without hammering".
A fault has occurred in the power
tool.
The carbon brushes are worn.
The power tool has not been
unlocked (power tools with optional
theft protection system).
The extension cord is too long or its
gauge is inadequate.
The control switch is not pressed
fully.
The "Reduced power" (50% power)
button is engaged.
The voltage provided by the electric
supply is too low.
The function selector switch is not
engaged or is in the "Chiseling" or
"Chisel adjustment" position.
The chuck is not pulled back fully.
The side handle is not fitted
correctly.
Remedy
Allow the power tool to warm
up to the minimum operating
temperature.
See section: 7.2.2 Hammer
drilling 6
Set the function selector switch to
"Hammer drilling".
If necessary, the power tool should
be repaired by Hilti Service.
Have it checked by a trained
electrical specialist and replaced if
necessary.
Use the TPS key to unlock the power
tool.
Use an extension cord of an
approved length and / or of
adequate gauge.
Press the control switch as far as it
will go.
Press the "Reduced power" button.
Connect the power tool to a different
power source.
When the motor has stopped, move
the function control switch to the
"Drilling without hammering" or
"Hammer drilling" position.
Pull the chuck back as far as it will
go and remove the insert tool.
Release the side handle and refit
it correctly so that the clamping
band and side handle engage in the
groove.