Troubleshooting - Hilti TE 706 Operating Instructions Manual

8.3.2 The indicator lamp blinks red
A fault has occurred.
The power tool has been rendered inoperable. Return
the power tool to a Hilti service center for repair.
8.3.3 Protective cut-out
The power tool is equipped with an overheating pre-
vention cut-out. This cut-out may be activated without
any warning. The cut-out may also be activated (or the
power tool may refuse to start), without the indicator
lighting, if a fault in the electric supply is detected (see
section 9).

9. Troubleshooting

Fault
The power tool doesn't
start.
The power tool doesn't
start and the indicator
lamp blinks yellow.
The power tool doesn't
start and the indicator
lamp blinks red.
The power tool doesn't
start or cuts out during
operation.
No hammering action.
The tool does not achieve
full power.
If the fault cannot be remedied by the measures listed above, the power tool should be checked at a Hilti
service center.
Printed: 07.07.2013 | Doc-Nr: PUB / 5071189 / 000 / 00
Possible cause
The electronics are being initialized
(this takes up to approx. 4 seconds
after the supply cord is plugged in)
or the electronic cut-out has been
activated after an interruption in the
electric supply.
There is an interruption in the electric
supply.
The supply cord or plug is defective.
Generator with sleep mode.
The power tool has not been activated
(tools with optional theft protection
system).
A fault has occurred in the tool.
The overheating prevention cut-out
has been activated.
Unstable electric supply (under- or
overvoltage cut-out activated).
The extension cord is too long or has
an inadequate cross section.
The power tool is too cold.
The power level selector switch is not
in the full power position.
The extension cord is too long or has
an inadequate cross section.
The voltage provided by the electric
supply is too low.
8.4 Maintenance
Check all external parts of the tool for damage at regu-
lar intervals and check that all controls operate fault-
lessly. Do not operate the tool if parts are damaged or
when the controls do not function faultlessly. If neces-
sary, your power tool should be repaired at a Hilti repair
center.
Repairs to the electrical section of the tool may be car-
ried out only by trained electrical specialists.
Remedy
Switch the tool off and on again.
Check the electric supply, for example,
by plugging in and starting another
appliance.
Have the supply cord and plug checked
by an electrical specialist and replaced if
necessary.
Apply a load to the generator by connect-
ing another appliance (e.g. a lamp) and
then switch the power tool off and on
again.
Use the activation key to activate the
power tool.
The power tool should be repaired at a
Hilti service center.
Allow the tool to cool down. Clean the
ventilation slots (see section 8.2).
Disconnect other appliances connected
to the same power source or connect the
power tool to a different power source.
Use an extension cord of permissible
length and of adequate cross section
(see 6.2).
Allow the tool to warm up to the minimum
operating temperature (see 7.2.2).
Bring the power level selector switch to
the correct position.
Use an extension cord of permissible
length and of adequate cross section
(see 6.2).
Connect the tool to a different power
source.
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