MELODY SERVICE MANUAL
PAGE 5
2006
SUNRISE MEDICAL
Section 2
Understanding Controller Display
Indicates that the wheelchair is locked. To unlock the wheelchair, deflect the joystick forwards until the control system
chirps. Then deflect the joystick in reverse until the control system chirps. Release the joystick, there will be a long beep.
The wheelchair is now unlocked.
To lock the wheelchair, while the control system is switched on, depress and hold the on/off button.
After 1 second, the control system will chirp. Now release the on/off button, deflect the joystick forwards until the control
system chirps, and deflect the joystick in reverse until the control system chirps. Release the joystick, there will be a long
beep. The wheelchair is now locked.
* VR2 This indicates that the chair is charging via on-board charger. The chair will be ready to drive as soon as the char-
ger is unplugged.
This indicates that all is well.
The control system is functioning correctly, but you should charge the battery as soon as possible. At 21.5 V, the red light
starts to blink. Each bar represents a .5V value. The controller requires 18V to start and a minimum of 16V to work once
started
Indicates the wheelchair batteries are being charged with the off-board charger. You will not be able to drive the wheel-
chair until the charger is disconnected and you have reset the control system by switching off the power and then power-
ing up again.
The control system has "gone to sleep" because the wheelchair has not been driven for a period of time.The time period
depends on the programming of the system. To re-start, reset the system by switching off the power and then powering up
again.
Make sure the Joystick is completely released. The control system safety circuits have been activated and the control
system has been prevented from moving the wheelchair. This indicates a system trip, i.e. the VR2 has detected a problem
somewhere in the wheelchair's electrical system. Please refer to Section 3 (VR2 Controller Diagnostics).
2.1 The Maximum Speed Indicator Ripples
2.2 The Maximum Speed Indicator Flashes
2.3 Battery Gauge is Steady
2.4 Battery Gauge Flashes Slowly
2.5 Battery Gauge Steps Up.
2.6 Battery Gauge Blinks Once Every 2.5 Seconds
2.7 Battery Gauge Flashes Rapidly
