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18 Troubleshooting
18.1 Troubleshooting Brushcutter or 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.
► Remove the battery.
► Allow the battery to cool down or warm up.
3 LEDs flash red. The brushcutter has a
malfunction.
► Remove the battery.
► Clean electrical contacts in the battery
compartment.
► Insert battery.
► 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.
Trimmer is too hot.
► Remove the battery.
► Allow trimmer to cool down.
4 LEDs flash red. There is a fault in the
battery.
► Remove battery and reinsert it.
► 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.
► Remove the battery.
► Clean electrical contacts in the battery
compartment.
► Insert battery.
The brushcutter or battery
is damp.
► Allow the brushcutter or battery to dry.
The brushcutter cuts
out during operation.
3 LEDs light
up red.
Trimmer is too hot.
► Remove the battery.
► Allow trimmer to cool down.
There is an electrical fault. ► Remove battery and reinsert it.
► Switch on the brushcutter.