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18 Troubleshooting
18.1 Troubleshooting the Brushcutter and Battery
18 Troubleshooting
Fault
LEDs on the
battery
Cause
Remedy
The brushcutter does
not start when
switched on.
1 LED flashing
green.
State of charge of the
battery is too low.
► Recharge the battery fully as described in the User
Manual for the STIHL AL 101, 300, 500 chargers.
1 LED emits red
light.
The battery is too warm or
too cold.
► Pull the connecting cable plug out of the socket.
► Allow the battery to cool down or warm up.
3 LEDs flash red. The brushcutter has a
malfunction.
► Pull connecting cable plug out of the socket and
plug in again.
► Switch on the brushcutter.
► If 3 LEDs continue to flash red: Do not use your
brushcutter and contact your STIHL dealer for
assistance.
3 LEDs light
up red.
The brushcutter is too hot. ► Pull the connecting cable plug out of the socket.
► Allow the brushcutter to cool down.
4 LEDs
flashing red.
There is a fault in the
battery.
► Pull connecting cable plug out of the socket and
plug in again.
► Switch on the brushcutter.
► If 4 LEDs continue to flash red: Do not use the
battery and contact your STIHL dealer for
assistance.
No electrical contact
between brushcutter and
battery.
► Pull connecting cable plug out of the socket and
plug in again.
► If the brushcutter still does not start when switched
on: Clean the contacts of the connecting cable as
described in the STIHL AR battery’s user manual
or in the user manual for the “AP belt bag with
connecting cable”.
The brushcutter or battery
is damp.
► Allow the brushcutter or battery to dry.
The brushcutter cuts
out during operation.
3 LEDs light
up red.
The brushcutter is too hot. ► Pull the connecting cable plug out of the socket.
► Allow the brushcutter to cool down.