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118 | Trouble shooting
6
Trouble shooting
If your electric wheelchair is not working even though the batteries are fully charged, the following checks can be carried out
before contacting your supplier.
Check whether all of the battery clips are fi rmly in place.
Check whether the freewheel handle is in the drive mode (and not in the freewheel / neutral mode).
Troubleshooting table
If your scooter is not working, or is not working as it should, go through the following list of possible problems before contacting
your supplier. You may be able to solve the problem yourself.
6.1 Shark faultfi nding table
Signal
Possible cause
service indicator
User error
fl ashes once.
service indicator
Battery fault
fl ashes twice
The m1 motor connection is faulty
ON/OFF light
fl ashes three times
The m1 motor is defective
The connection of the m2 motor is faulty.
ON/OFF light
fl ashes four times
The m2 motor is defective
The m1 parking brake connection is faulty or
ON/OFF light:
loose.
fl ashes 5 times
The m1 parking brake is defective.
The m2 parking brake connection is faulty or
ON/OFF light:
loose.
fl ashes 6 times
The m2 parking brake is defective.
ON/OFF light
There is a fault in the controller
fl ashes 7 timest
ON/OFF light
There is a fault in the power module
fl ashes 8 times
ON/OFF light
There is a communication fault in the
fl ashes 9 times
Shark system.
ON/OFF light
Unknown fault
fl ashes 10 times
ON/OFF light
System does not 'fi t'.
fl ashes 11 times
System modules are not compatible.
Note:
If all the plugs are connected properly and you have used the troubleshooting list but not found the cause, contact the Service
Department of Sunrise Medical HCM.
Before changing Shark bus cables, fuses and/or modules, remove both fuses from the battery compartment, so that the system is
dead.
Remedy
This is probably a 'STALL' timeout.
Place the joystick in neutral and try again
Check the batteries and the cabling
Charge the batteries or replace them.
Check the motor connections and cabling.
Replace this motor
Check the motor connections and cabling.
Replace this motor
Correct the connection
Replace the parking brake
Correct the connection
Replace the parking brake
Check all connections and correct as necessary
If a fault signal is still present after this, replace
the power module.
Check all connections and correct as necessary
If a fault signal is still present after this, replace
the power module.
Check the connection and correct it if necessary.
If a fault signal is still present after this, replace
the controller.
Check all connections and correct as necessary
Consult a service engineer.
Check that the type of the controller corresponds
with the power module.
Replace one of the two if necessary.
Puma 20/40
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