19 Troubleshooting
19.1 Troubleshooting the brushcutter or battery
Fault LEDs on the
battery
Cause Remedy
The brushcutter
does not start
when switched
on.
1 LED flashes
green.
State of charge of the
battery is too low.
► Charge the battery.
1 LED lights up
red.
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 the brushcutter and contact a STIHL
authorized dealer for assistance.
3 LEDs light up
red.
The brushcutter is too
hot.
► Remove the battery.
► Allow the brushcutter to cool down.
4 LEDs
flash red.
There is a fault in the
battery.
► Remove the battery and reinsert it.
► Switch on the brushcutter.
► If 4 LEDs continue to flash red: Do not
use the battery; contact a STIHL author‐
ized dealer.
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,
20.6.
The brushcutter
cuts out during
operation.
3 LEDs light up
red.
The brushcutter is too
hot.
► Remove the battery.
► Allow the brushcutter to cool down.
There is an electrical
fault.
► Remove the battery and reinsert it.
► Switch on the brushcutter.
The runtime of
the brushcutter is
too short.
The battery is not fully
charged.
► Fully charge the battery.
The battery service
life has been excee‐
ded.
► Replace battery.
The power levels
cannot be set.
The trigger is pressed
and the brushcutter
switched on.
► Select the power level as described in
this User Manual.
The mowing
head cannot be
removed by
hand.
The mowing head is
overtightened.
► Block the fanwheel with the stop pin.
► Unscrew the mowing head by hand.
► Remove the stop pin.
Charging does
not start when
the battery is
inserted into the
charger.
1 LED lights up
red.
The battery is too
warm or too cold.
► Leave battery inserted in charger.
Charging starts automatically as soon as
the permitted temperature range is
reached.
English 19 Troubleshooting
22 0458-027-0101-A
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