Troubleshooting - Hilti TE 40 Operating Instructions Manual

8.3 Service indicator
NOTE
The power tool is equipped with a service indicator.
Indicator
en
8.4 Maintenance
WARNING
Repairs to the electrical section of the power tool may
be carried out only by trained electrical specialists.
Check all external parts of the power tool for damage
at regular intervals and check that all controls operate
faultlessly. Do not operate the power tool if parts are

9 Troubleshooting

Fault
The power tool doesn't start.
No hammering action.
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.
24
Constant red light
Blinking red light
damaged or when the controls do not function faultlessly.
If necessary, the power tool should be repaired by Hilti
Service.
8.5 Checking the power tool after care and
After carrying out care and maintenance work on the
power tool, check that all protective and safety devices
are fitted and that they function faultlessly.
Possible cause
Interruption in the electric supply.
The supply cord or plug is defective.
Generator with sleep mode.
Other electrical fault.
The electronic restart interlock is ac-
tivated after an interruption in the
electric supply.
The power tool is too cold.
A fault has occurred in the power tool.
The carbon brushes are worn.
The power tool has not been un-
locked (power tools with optional theft
protection system).
The extension cord is too long or its
gauge is inadequate.
The voltage provided by the electric
supply is too low.
End of service interval - servicing is due.
After the lamp lights for the first time,
the power tool may continue to be used
for several hours before the automatic
cut-out is activated. To ensure that the
power tool is always ready for use, it
should be returned to Hilti for servicing
in good time.
See section "Troubleshooting".
maintenance
Remedy
Plug in another electric appliance and
check whether it works.
Have it checked by a trained electrical
specialist and replaced if necessary.
Apply a load to the generator by con-
necting another appliance (e.g. a
lamp). Subsequently switch the power
tool off and on again.
Have it checked by a trained electrical
specialist.
Switch the power tool off and on
again.
Allow the power tool to warm up to
the minimum operating temperature.
See section: 7.2.3 Hammer drilling
(B) 9
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.
Connect the power tool to a different
power source.