Wheelchair Control Unit Fault Overview - Otto Bock B500 Classic User Instructions

7.4.2 Wheelchair control unit fault overview

Display Error/Warning
Controller temperature warning
Motor temperature warning
Joystick warning
Hand-held control unit fault
Controller fault
Communication error (altern­
ately flashing)
Battery undervoltage
B500 classic/advanced
Probable cause
Overheating due to excessive
load
Overheating due to excessive
load
Joystick not in home position
when the unit is turned on
Defective joystick
Defective controller
Faulty connection between
the hand-held control unit
and the controller;
Defective cabling, software
or hardware
Battery deep discharge
Battery cable malfunctioning
or faulty connection to the
battery
Maintenance/Repair
Possible corrective action
Cool down phase
Cool down phase
Move the joystick to the home posi­
tion before switching the unit on
Contact specialist dealer
Check all connections
Contact specialist dealer
Check cabling/plug connections
Contact specialist dealer
Charge as soon as possible
Check the connection to the battery
(charge the battery if the connection
is good)
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