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24 Troubleshooting Guide
24.1
Trimmer and Battery
Always remove the battery before carrying out any inspection, cleaning or maintenance.
Condition
LEDs on
Battery
Trimmer does
not start when
switched on.
1 LED
flashes
green.
1 LED glows
red.
4 LEDs flash
red.
3 LEDs glow
red.
3 LEDs flash
red.
Trimmer cuts out
1 LED glows
during operation.
red.
3 LEDs glow
red.
Run-time is too
short.
Mowing head
cannot be
removed by
hand.
Battery is not
1 LED glows
being charged
red.
even though LED
on charger glows
green.
24.2
Charger
Condition
LED on
Charger
Battery is not
LED glows red. Battery too hot / too
being charged.
30
Cause
Remedy
No electrical
► Remove the battery,
contact between
► Visually check the electrical contacts in the bat‐
trimmer and bat‐
tery compartment and on the battery.
tery.
► Reinsert the battery,
Battery has low
► Charge the battery,
charge.
Battery too hot /
► Allow the battery to warm up or cool down grad‐
too cold.
ually at ambient temperatures of about 50 °F to
68 °F (10 °C to 20 °C).
Malfunction in
► Remove the battery and reinsert it,
battery.
► Switch on the trimmer,
► If the LEDs continue to flash, do not attempt to
use.
The battery has a malfunction and must be
replaced.
Trimmer too hot. ► Allow the trimmer to cool down.
Malfunction in
► Remove the battery and reinsert it,
trimmer.
► Switch on the trimmer,
► If the LEDs still flash, do not attempt to use.
The trimmer has a malfunction and must be
checked by a servicing dealer.
Battery too hot /
► Remove the battery,
too cold.
► Allow the trimmer and battery to cool down
gradually at ambient temperatures of about
Trimmer too hot.
50 °F to 68 °F (10 °C to 20 °C).
Battery not fully
► Charge the battery,
charged.
Useful life of bat‐
► Have the battery checked by an authorized
tery has been
STIHL servicing dealer.
reached or
exceeded.
Mowing head is
► Block the fan wheel with the stop pin.
too tight.
► Remove the mowing head by hand by turning it
counterclockwise.
► Remove the stop pin.
Battery too hot /
► Allow the battery to warm up or cool down grad‐
too cold.
ually at ambient temperatures of about 50 °F to
68 °F (10 °C to 20 °C).
► Operate the charger indoors in a dry room. For
optimum performance, observe the recommen‐
ded ambient temperature ranges,
Cause
cold.
24 Troubleshooting Guide
15.2.
15.1.
11.
16.1.
16.1.
15.2.
11.
Remedy
► Allow the battery to warm up or cool
down gradually at ambient temperatures
of about 50 °F to 68 °F (10 °C to 20 °C).
15.
15
25.5.
0458-039-8201-A
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