Problem
Cause
Solution
Parking brake partially
engaged
Check parking brake
function. Clicking sound at
engaging/disengaging
should be present. Check
temperature of parking
brake after driving.
Wheelchair drives slower
throughout the day (or after
several hours)
Poor batteries
Check batteries and battery
voltage.
Poor or incomplete battery
charging
Check battery charger.
Check charging duration
with the user.
Thermal rollback
(overheating)
Check usage of wheelchair,
extreme usage can cause
the power module to
decrease the maximum
currents for protection.
Check wheelchair in
freewheel mode for
extreme resistance on
rolling or turning.
(DX2 controls only)
Gyro module (if present) is
not connected correctly or
is not functioning properly
=> Controllers switch to
SystemSlowDown
mode.
Check Gyro cabling and/or
replace Gyro module.
Wheelchair only drives well
for a short period of time.
Current limit is set too low
or the controller is
underspecified
Check program settings
and/or replace controller.
Wheelchair can be
powered up, but does not
drive.
Parking brakes are in
freewheel mode (flash code
on remote!)
Set parking brakes to Drive
mode.
Drive inhibits active (flash
code on remote)
Check program which Drive
inhibits are present. Check
cabling of Drive inhibits on
wheelchair.
Wheelchair has too little
power to drive properly
Tyre pressure of drive
wheels or castors is too low
Check pressure and inflate
if needed. See User
manual for correct value.
Programming of speed and
Torque Settings is not
correct
Check programming and
make corrections if needed.
Troubleshooting
Service manual - Alex
37
