Jazzy 1113 www.pridemobility.com 31
VII. OPERATION
To unlock the VSI:
1. Press the on/off key and power on the VSI. The maximum speed/profile indicator should ripple side to side.
2. Push the joystick to the full forward position until the VSI beeps.
3. Pull the joystick to the full rearward position until the VSI beeps.
4. Release the joystick. There should be a long beep.
5. The VSI is now unlocked.
NOTE: If the above procedure fails to either lock or unlock the VSI, contact an authorised Pride
Provider.
THERMAL ROLLBACK
The VSI controller is equipped with a thermal rollback circuit. This circuit monitors the temperature of the control-
ler, which roughly translates to motor temperature. In the event that the VSI controller becomes excessively hot
(above 60° C/140° F), motor current (amperage) is reduced. For every degree above 55° C/131° F, the motor
current limit is reduced by .55 amps. This reduces power chair “power,” which could also reduce power chair
speed. Once the VSI controller reaches 70°C/158° F, the current output is reduced to zero and your power chair
will stop.This allows the electrical components and motors to cool down. When the temperature returns to a safe
level, your power chair resumes its normal operation.
ERROR CODES
The VSI controller is designed with the user’s safety as the prime consideration. It incorporates many sophisticated
self-test features which search for potential problems at a rate of 100 times per second. If the VSI detects a
problem either in its own circuits or in the power chair’s electrical system, it may decide to stop the power chair,
depending on the severity of the problem. The VSI is designed to maximize the user’s safety under all normal
conditions. The table below identifies the individual error codes. Error codes are displayed as a rapid flashing of
the lights. If you get one of these error codes, contact an authorised Pride Provider.
VSI ERROR CODES
Flashing Lights Diagnosis and Solution
1 The batteries need charging or there is a bad connection to the batteries. Check the
connections to the batteries. If the connections are good, try charging the batteries.
2 The left motor has a bad connection. Check the left motor connection.
3 The left motor has a short circuit to a battery connection. Contact your authorised Pride Provider.
4 The right motor has a bad connection. Check the right motor connection.
5 The right motor has a short circuit to a battery connection. Contact your authorised Pride Provider.
6 The power chair is being inhibited by the battery charger. Unplug the battery charger.
7 A joystick fault is indicated. Make sure that the joystick is in the neutral (center) position
before turning on the controller.
8 A controller system fault is indicated. Make sure that all connections are secure.
9 The parking brakes have a bad connection. Check the parking brake and motor connections.
Make sure the controller connections are secure.
10 An excessive voltage has been applied to the controller. This is usually caused by a poor
battery connection. Check the battery connections.
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