Fault code Possible cause
An excessive voltage has been applied to the control system. This is usually caused by a poor
battery connection. Check the battery connections.
+ S
S = Speed indicator LED’s
A communication fault is indicated. Make sure that the joystick cable is securely connected
and not damaged.
+ A
A = Actuator LED’s
An actuator trip is indicated. If more than one actuator is fitted, check which actuator is not
working. Check the actuator wiring.
Note: For the Rumba Modular an alternative control system called R-net is available. The R-net control
system is covered by a separate Owner’s Manual.
Please refer to the R-net Owner’s Manual for details.
Fault code Possible cause
The batteries need charging, or there is a bad connection to the battery. Check the connections to
the battery. If the connections are good, try charging the batteries.
The left hand motor has a bad connection. Check the connections to the left hand motor.
The left hand motor has a short circuit to a battery connection. Contact your Sunrise Medical
authorised dealer.
The right hand motor has a bad connection. Check the connections to the right hand motor.
The right hand motor has a short circuit to a battery connection. Contact your Sunrise Medical
authorised dealer.
The wheelchair is being prevented from driving by an external signal. One possibility is that the
battery charger is plugged in.
A joystick fault is indicated. Make sure that the joystick is in the centre position before switching on
the control system.
A control system fault is indicated. Make sure the control system connections are secure.
The parking brakes have a bad connection. Check the parking brake and the motor connections.
Make sure that the control system connections are secure.
Fig. 8.1
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