AR 900
English
40
Troubleshooting
Always disconnect the battery from the power tool before performing any maintenance work.
Condition
Cause
Remedy
Power tool does not start after switch-on
No electrical contact between power
tool and battery
Remove adapter, check contacts and refit
adapter
Battery has low charge
(1 LED on battery flashes green and
four long beeps sound)
Charge the battery
Battery too hot / too cold
(1 LED on battery glows red)
Allow battery to cool down / allow battery to
warm up slowly at temperature of about
15°C - 20°C
Malfunction in battery
(4 LEDs on battery flash red and a
rapid succession of beeps sound for
several seconds)
Disconnect battery from power tool, take it
off your back, observe battery and contact
your STIHL servicing dealer immediately.
If the battery emits fumes, heats up, smells,
makes noises or shows signs of deforma
-
tion, disconnect it from the power tool, take
it off your back, put it down and immediately
move a safe distance away. Keep children
and animals away from the work area. Keep
battery away from combustible materials.
Power tool too hot
(3 LEDs on battery glow red)
Allow power tool to cool down
Electromagnetic problem or malfunc
-
tion in machine
(3 LEDs on battery flash red)
Take the adapter out of the power tool and
refit it. Switch on the power tool – if the light
emitting diodes still flash, the power tool has
a malfunction and must be checked by a
STIHL servicing dealer.
Moisture in power tool and/or battery Allow power tool / battery to dry