Procedure For Warnings And Error Messages; Wheelchair Control Unit Error Overview - Otto Bock Juvo Instructions For Use Manual

For example, if the connection between the control unit and seat motor is faulty, this error will only be indicated if
the user attempts to activate the motor. However, the driving function is still available.
Error
An error affects one or several functions of the power wheelchair. The power wheelchair and its functions are not
fully operational until the fault is resolved.
Structure of an error message
The control unit display shows both errors in the control system itself as well as errors in electrical components of
the power wheelchair or errors in the cabling. The error message contains the following information:
• Affected module – e.g. JSM = joystick module (control panel); PM = power module (control unit)
• Error code (4 characters)
• Abbreviated error description

7.4.2 Procedure for warnings and error messages

• If a warning or error message appears, the power wheelchair can often no longer be driven. In this case, the
error message must be noted, the control unit switched off and the qualified personnel informed of the error
message immediately.
• If the error is related to a component which is not currently being used (e.g. to an actuator for adjusting the
seat function), the driving function of the power wheelchair is still theoretically usable. An error message simply
appears at regular intervals.
• Nonetheless, the control unit must be switched off for several minutes in this case. If the error message contin­
ues to appear after switching on the control unit, the error message must be noted, the control unit switched
off again and the qualified personnel informed of the error message immediately.

7.4.3 Wheelchair control unit error overview

VR2 control panel
Flashing LED
Juvo
Error/warning
Battery undervoltage
Left motor not connected e.g. defective plug con­
Wiring fault on the left
motor
Right motor not connec­
ted
Defective cables on right
motor
Driving function blocked
due to external factors
Joystick fault
Controller fault
Brake release
Cause
Battery deep discharge
Battery cable malfunc­
tioning or faulty connec­
tion to the battery
nection, cable break
e.g. cable break, no con­
nection to battery
e.g. defective plug con­
nection, cable break
e.g. cable break, no con­
nection to battery
Battery charger may be
connected
Joystick not in home pos­
ition when the unit is
turned on
Defective controller
Open brake release
Maintenance and repair
Possible corrective action
Charge as soon as possible
Check the connection to the battery
(charge the battery if the connection
is good)
Check plug connections and cable
to left motor
Check cable connections to left
motor; check connection to battery
terminal
Check plug connections and cable
to right motor
Check cable connections to right
motor; check connection to battery
terminal
Disconnect battery charger
Move the joystick to the home posi­
tion before switching the unit on
Check all connections
Check motor brakes
Check connection to the controller
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