Pride Mobility Jet 7 Owner's Manual page 22

THERMAL ROLLBACK
The VSI controller is equipped with a thermal rollback circuit. The circuit monitors the temperature of the controller, which
roughly translates to motor temperature. In the event that the VSI controller becomes excessively hot (above 140° F), motor
current (amperage) is reduced. For every degree above 140° F, the motor current limit is reduced by .55 amps until the VSI
controller reaches 158° F, at which time the current output is reduced to zero. This reduces your power chair's "power," which
could also reduce your power chair's speed, and allows the electrical components and motors to cool down. When the
temperature returns to a safe level, your power chair resumes its normal operation.
TROUBLESHOOTING
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 maximise 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
your authorised Pride provider.
VSI ERROR CODES
Flashing Lights Diagnosis and Solution
1 The battery needs charging or there is a bad connection to the battery. Check the connections to
the battery. If the connections are good, try charging the battery.
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 (centre) 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 controler 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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WWW.PRIDEMOBILITY.COM JET7/REV A/OCTOBER 2002