7.1.
General diagnostics and faultfinding
Problem
Cause
Solution
Wheelchair does not switch
on
Buscables not connected
Check buscable
connections of the joystick
module to the power
module (can also be
through the actuator
module!)
Pins in connectors are
loose or damaged
Check connectors for loose
or damaged pins. If
damaged replace cable.
Buscable defect
Check all bus cables for
damage. Bypass each
buscable with new one to
check functionallity.
Fuse defect / Thermal trip
Check fuses and replace if
needed.
Battery connections are
loose
Check battery connections
and restore if needed.
Battery voltage too low
Measure battery voltage
and charge batteries.
Battery defect
Measure battery voltage.
Voltage below 10 V can
indicate that one battery is
defect. Replace batteries.
Remote control or button
defect
Check by replacing with
new one.
Power Module defect
Check by replacing with
new one.
Wheelchair continuously
drives slower than normal
Speed limit due to
microswitch signal from
seating function.
Check if all seating options
are in neutral position.
Measure resistance from
the speed limit cable in
different seating positions.
Bad cable connections or a
broken resistor influences
the drive inhibit signal.
Incorrect programming
Check for correct program.
Re-program if needed.
Troubleshooting
36
Service manual - Alex
