English
Fault
LEDs on the ope‐
rating unit
1 LED on the
charge state indi‐
cator illuminates
red.
Fault indicator fla‐
shes red.
Overheating indi‐
cator lights up
red.
3 LEDs on the
charge state indi‐
cator illuminate
red.
All LEDs on the
operating unit
flash.
Self-propul‐
sion is not
working.
52
LEDs on the
Cause
battery
1 LED illumi‐
The battery is too
nates red.
warm or too cold.
3 LEDs flash
There is a fault in
red.
the lawn mower.
3 LEDs illu‐
The lawn mower
minate red.
is too warm.
4 LEDs flash
There is a fault in
red.
the battery.
The electrical
connection bet‐
ween the lawn
mower and bat‐
tery has been
interrupted.
Communication
with the operating
unit has been
interrupted.
The lawn mower
or battery is
damp.
The resistance at
the blades is too
great.
The area around
the blade is
blocked.
Self-propulsion is
disengaged.
There is a fault in
the self-propul‐
sion mechanism.
20 Troubleshooting
Remedy
► Remove the battery.
► Allow the battery to cool down
or warm up.
► Remove the battery.
► Clean the electrical contacts in
battery compartment 1 and
battery compartment 2.
► Fit the battery.
► Switch the lawn mower on.
► If 3 LEDs still flash red: do not
use the lawn mower and con‐
sult a STIHL specialist dealer.
► Remove the battery.
► Allow the lawn mower to cool
down.
► Remove the battery and fit it
again.
► Switch the lawn mower on.
► If 4 LEDs still flash red: do not
use the battery and consult a
STIHL specialist dealer.
► Remove the battery.
► Clean the electrical contacts in
battery compartment 1 and
battery compartment 2.
► Fit the battery.
► Remove the battery.
► Do not use the lawn mower
and consult a STIHL specialist
dealer.
► Remove the battery.
► clean the lawn mower.
► Allow the lawn mower or bat‐
tery to dry,
21.5.
► If working with self-propulsion
engaged: disengage self-pro‐
pulsion.
► If working with self-propulsion
disengaged: go forwards slo‐
wer.
► Set a higher cutting height.
► Switch the lawn mower on in
lower grass.
Clean the lawn mower.
Set the self-propulsion speed.
► Remove the battery and fit it
again.
► Engage self-propulsion.
► If the self-propulsion fault per‐
sists: consult a STIHL specia‐
list dealer.
0478-131-9670-A