Sunrise Medical 931157 service manual Test Motor Connections, Battery Fault

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 4-pin motor connector see (figure A3.8.3). If both motor connectors read approximately 60 ohms, then replace the main har- ness. Otherwise, replace the motor that does not read approximately 60 ohms.

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

21

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