Understanding VSI Controller Diagnostics Codes (cont.)
3.8 Nine Bars - Solenoid Brake Trip (cont.)
Test Motor Connections
If either or both readings are incorrect, then measure the resistance on the two small contacts on the
A3.8.3
If both motor connectors read approximately 60 ohms, then replace the main harness. Otherwise, replace the motor that does not read approximately 60 ohms.
3.9 Ten Bars - High Battery Voltage
An excessive voltage has been applied to the control system. This is usually caused by a poor battery connec- tion. Check the battery connections.
Battery Fault
Check that the batteries are fully charged, the correct volt- age and in good condition. Take a voltage reading from pin 1 and pin 2 of the charger port of the VSI controller, see (figure A3.9.1) If the meter reads more than 30 volts, then check the charger. Otherwise, replace your controller.
A3.9.1
2
1
3 
If the meter reads more than 30 volts replace the charger,
If the Batteries, connections, and voltage level are correct replace the controller.
SUNRISE MEDICAL | ASPIRE SERVICE MANUAL | 2003 | PAGE 10 |