GE Industrial Solutions GPS 4848_100 Users Guide (dual rectifier shelf) - Manual (Page 89)

Galaxy Power System 4848/100 with Dual Rectifier Shelf
Issue 5 September 2011 Troubleshooting Preparations 12 - 3
Troubleshooting Procedure, continued
System Status 2. Determine the system status. For most problems, one or more alarm
and status LEDs will be illuminated. The controller default screen
indicates system voltage and current, the system mode (i.e., FLOAT
or EQUALIZE), and the number of alarms and/or warnings present.
If the screen is blank, but alarm and status LEDs are illuminated,
call technical support.
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If the entire panel is blank, check the F3 basic power fuse (Figure
12-3). Verify that the controller is getting power. If not, replace
fuse. If the display is still blank, call technical support.
Alarms Menu 3. If the default screen appears normal, press the MENU button. The
main menu appears with “Alarms” blinking. Press ENTER to
obtain the Alarms menu. Additional data appears that will help to
identify the problem.
Troubleshooting
Tables
4. Based on the information presented by the alarm LEDs, select the
appropriate table from the list below:
Section 13, Troubleshooting Millennium Systems
Alarm LED Table
AC 13-A, AC Alarms
BATT 13-B, Battery Alarms
BD 13-F, Miscellaneous Alarms
CTRL 13-C, Controller Alarms
DIST 13-D, Distribution Alarms
RECT 13-E, Rectifier Related Alarms
No LED* 13-F, Miscellaneous Alarms
*If an alarm condition exists, but no alarm LED is lit,
refer to Table 13-F.
Identifying
Problems
5. Once the appropriate table is identified, use the status LEDs and the
alarm menu data to identify the specific problem that is causing the
alarm.