06/2011
B400
Page 121
Failures/Troubleshooting
FlashingLED Error/Warning Cause PossibleCorrectiveAction
Battery undervoltage Total battery discharge;
batter cable damaged/
poor connection to the battery
Recharge battery;
check connection to battery (if
connection to battery, recharge
battery)
Poor cable connection to
the left motor
Defective motor
e.g. defective plug Check connection to the left
motor
Check motor
Short circuit on the battery
connection to the left motor
e.g. broken cable Check battery connection to
the left motor
Poor cable connection to
the right motor
Defective motor
e.g. defective plug Check connection to the right
motor
Check motor
Short circuit on the battery
connection to the right
motor
e.g. broken cable Check battery connection to
the right motor
Driving function is blocked
due to external influences
or battery charger is connected Disconnect battery charger
Joystick error Joystick not in zero position when
switching on
Switch joystick to zero position
prior to switching on