21 Troubleshooting
21 Troubleshooting
21.1
Remedying Lawn Mower or Battery Faults
Fault
LEDs on the
battery
The lawn mower
1 LED flashes
does not start
green.
when switched
on.
1 LED illumina‐
tes red.
3 LEDs flash
red.
3 LEDs illumi‐
nate red.
4 LEDs flash
red.
Self-propulsion is
not working.
The lawn mower
3 LEDs illumi‐
stops during ope‐
nate red.
ration.
0478-131-9948-D
Cause
The battery charge
state is too low.
The battery is too
warm or too cold.
There is a fault in the
lawn mower.
The lawn mower is
too warm.
There is a fault in the
battery.
The electrical connec‐
tion between the lawn
mower and battery
has been interrupted.
The lawn mower or
battery is damp.
The resistance at the
blade is too great.
The area around the
blade is blocked.
There is a fault in the
self-propulsion
mechanism.
The lawn mower is
too warm.
Remedy
► Charge the battery.
► Pull out the activation key.
► Remove the battery.
► Allow the battery to cool down or warm
up.
► Pull out the activation key.
► Remove the battery.
► Clean the electrical contacts in the bat‐
tery compartment.
► Fit the battery.
► Switch the lawn mower on.
► If 3 LEDs still flash red: do not use the
lawn mower and consult a STIHL spe‐
cialist dealer.
► Pull out the activation key.
► 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.
► Pull out the activation key.
► Remove the battery.
► Clean the electrical contacts in the bat‐
tery compartment.
► Insert the activation key.
► Fit the battery.
► Pull out the activation key.
► Remove the battery.
► Clean the lawn mower.
► Allow the lawn mower or battery to dry,
22.5.
► Set a higher cutting height.
► Switch the lawn mower on in lower
grass.
► Clean the lawn mower.
► Consult a STIHL specialist dealer.
► Pull out the activation key.
► Remove the battery.
► Allow the lawn mower to cool down.
► Clean the lawn mower.
► Do not switch the lawn mower on too fre‐
quently within a short time.
► If working with self-propulsion engaged:
switch off self-propulsion.
► If working with self-propulsion disenga‐
ged: go forwards slower.
► Set a higher cutting height.
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