Understanding Vsi Controller Diagnostics Codes; Bar (1 Red) Low Battery Voltage; Bars (2 Red) - Left Motor Disconnected - Sunrise Medical Quickie S-11 Service Manual

Quickie s-11

User instruction manual (34 pages)

Table of Contents

3.1 One Bar - Low Battery Voltage

This code could indicate discharged batteries, failed batteries, or poor battery connections. Begin by recharging the bat-

teries and then refer to Section 1 to check batteries and connections.

3.2 Two Bars - Left Motor Disconnected

The left hand motor has a bad connection. Check the connections to the left hand motor.

Test Left Motor Open

Check that the batteries are fully charged and in good

condition; and check all cables and connections. Check

the connections to the left motor, look for a loose or dam-

aged connector. Remove the 9-pin Beau plug and check

the resistance across pin 3 and pin 4 as shown in (figure

A3.2.1). If the meter reads between 0 to 1.5 ohms, then

replace the controller.

If the meter reads between 0 to 1.5 ohms, then replace the controller.

Otherwise, check both brushes on the left motor. (Refer to

Section 4 Step 9 of this Service Manual for easiest access).

Ensure that the brushes are not excessively worn, (replace

as required). Top access for Motor brush shown in (figure

A3.2.2)(requires shroud removal).

Use the meter to check the resistance across the two bot-

tom contacts (thicker wires) on the 4-pin motor connector

as shown in (figure A3.2.3). If the meter reads between 0

to 1.5 ohms, then replace the main harness. If none of the

above corrects the problem, replace the left motor.

If the meter reads between 0 to 1.5 ohms, then replace the main harness.

If none of the above corrects the problem, replace the left motor.

SUNRISE MEDICAL