SECTION 3—SAFETY INSPECTION/TROUBLESHOOTING
26
MPJ™+, PSR+, PSF+ Joysticks or Displays
SYMPTOM
PROBABLE CAUSE
SOLUTIONS
SPM L Park Brake Fault or
SPM R Park Brake Fault displays and
wheelchair does not drive.
Motor lock levers disengaged (Error
code E9 or E10).
Engage motor lock levers. Refer to user
manual shipped with wheelchair.
CHARGER PLUGGED IN displays.
Battery charger connected (Error
code E28).
Unplug battery charger from the wheelchair.
Refer to Charging Batteries on page 72.
SPM Battery Fault displays and the
wheelchair does not drive.
Batteries need to be charged (Error
code E14).
Charge batteries. Refer to Charging Batteries
on page 72. If batteries fail to charge properly,
check battery charger or replace batteries.
Refer to Replacing Batteries on page 65.
JOYSTICK TIMEOUT displays and the
wheelchair does not drive.
Joystick or input device is
disconnected (Error code 32).
Turn off power, reconnect the joystick of
input device and turn power on.
JS REV TOO LARGE
JS FWD TOO LARGE
JS LFT TOO LARGE or
JS RGT TOO LARGE
displays and the wheelchair does not drive.
The joystick or input device is sending
a value outside of the reverse,
forward, left or right limits (Error
codes E01, E02, E03 or E04).
Replace joystick or input device.
NEUTRAL TESTING displays.
The joystick neutral test has failed
(Error code E18).
Release the joystick and try to get the joystick
back into the center-most position.
BAD JOYSTICK CAL VALUES displays
and the wheelchair does not drive.
The joystick calibration values are
outside of the expected range (Error
code E19).
Recalibrate the joystick (joystick throw
procedure).
SPM NOT CONNECTED
The MPJ or Display module is not
communicating with the control
module (Error code E200).
Check the connections between the joystick
or display and the controller. Turn the power
off and then back on. Replace the controller if
necessary.
SPM Communications Fault displays and
the wheelchair drives slowly.
The controller has determined a fault
during a previous turn-off process
(Error code E41).
Turn the wheelchair off and back on.
ATTENDANT ACTIVE and
displays.
The Proportional or Digital Attendant
control is active and can be used to
drive the chair (Error code W05).
This is normal behavior.
Batteries draw excessive current when
charging.
Battery failure.
Electrical malfunction.
Have batteries checked for shorted cell.
Replace if necessary. Refer to Replacing
Batteries on page 65.
Contact Invacare for service.
Battery indicator flashes the charge level is
low - immediately after recharge.
Battery failure.
Malfunctioning battery charger.
Electrical malfunction.
Check batteries for shorted cell. Replace if
necessary.
Replace charger.
Contact Invacare for service.
Battery indicator flashes the charge level is
low - too soon after being recharged.
Batteries not charged.
Weak batteries.
Have charger checked.
Replace batteries if necessary. Refer to
Replacing Batteries on page 65.
Motor “chatters” or runs irregular.
Electrical malfunction.
Contact Invacare for service.
