Troubleshooting - Hilti TE 800 Operating Instructions Manual

8 Troubleshooting

Fault
The power tool doesn't start.
The power tool doesn't start
and the LED blinks red.
No hammering action.
The power tool doesn't start
and the service indicator lights
red.
The power tool starts and the
service indicator lights red.
The power tool does not
achieve full power.
The chisel can't be released
from the chuck.
NOTE
If the fault cannot be eliminated by the measures listed above, have the power tool checked by Hilti Service.
Possible cause
Initialization of the electronics is in
progress (takes up to approx. 1 sec.
after plugging in) or the electronic re-
starting interlock has become activ-
ated after an interruption in the elec-
tric supply.
Interruption in the electric supply.
The supply cord or plug is defective.
The control switch is defective.
Generator with sleep mode.
A fault has occurred in the power tool.
The tool is too cold.
A fault has occurred in the power tool.
The carbon brushes are worn.
A fault has occurred in the power tool.
Lights when servicing is due (end of
service interval).
Power reduction is active. The yellow
LED lights.
The extension cord is too long or its
gauge is inadequate.
The voltage provided by the electric
supply is too low.
The chuck is not pulled back fully.
Remedy
Switch the power tool off and on
again.
Plug in another electric appliance and
check whether it works.
Have it checked by a trained electrical
specialist and replaced if necessary.
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.
If necessary, the power tool should be
repaired by Hilti Service.
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.
If necessary, the power tool should be
repaired by Hilti Service.
Have it checked by a trained electrical
specialist and replaced if necessary.
If necessary, the power tool should be
repaired by Hilti Service.
Have the power tool serviced or re-
paired by Hilti Service.
Press the power level selector switch
(observe the power level indicator).
Switch the power tool off and on
again.
Use an extension cord with an ad-
equate 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
power source.
Pull the chuck back as far as it will go
and remove the insert tool.
en
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