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6. MAINTENANCE
6.7
Troubleshooting Using the SID
The OUTPUT LOAD LEDs, located on the front panel of the Standard Interface
Device, are designed to display UPS fault conditions once the unit has detected an
internal problem, indicated by the SERVICE LED. This information provided by the
LEDs is extremely useful during troubleshooting and maintenance. If the UPS is equipped
with an IID, refer to its operator's manual for further troubleshooting information.
If your UPS SERVICE LED is ON, press and hold the ALARM OFF switch for
approximately 3 seconds. The OUTPUT LOAD LED's indicate:
LED
OVERLOAD
100%
75%
50%
25%
SERVICE LED
Flashing
Not Applicable
PLL Fault
Output Voltage High
PWR BRD Fault
or -5 VDC Failure
Self-Test Failure
Standard Interface Device - Fault Indicators
Standard Interface Device (Troubleshooting)
Continuous
Fast Detector / Low Sensitivity
Setting Active
High Ambient Temperature
Output Voltage Short Circuit
PWR BRD EPROM Failure
Battery Over-Voltage
or Charger Fault
ALARM OFF Switch
OUTPUT LOAD LEDs
Fig. 32
70
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Table of Contents
Troubleshooting
