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Table 5-3: Troubleshooting problems after UPS startup
Symptom
Audible alarm sounds.
Battery LED and Alarm LED
are lit.
N+1 LED is off.
Audible alarm sounds.
Battery LED, Alarm LED, and
N+1 LED are lit.
UPS frequently switches
between utility and battery
power.
Utility LED and N+1 LED are
lit.
Audible alarm sounds.
Utility LED and Alarm LED are
lit.
Utility LED is lit.
Compaq Uninterruptible Power System R12000 XR User Guide
Possible Cause
UPS is on battery.
UPS is on battery.
The utility voltage is frequently
outside the UPS operating
range.
UPS is on utility.
UPS is on utility.
UPS is on utility.
Troubleshooting
continued
Suggested Action
Do one of the following:
•
Scroll through the LCD
menu to view current
alarms.
•
Use the power
management software to
view the alarm history to
determine the reason for
the transfer to Battery
mode.
Do one of the following:
•
Scroll through the LCD
menu to view current
alarms.
•
Use the power
management software to
view the alarm history to
determine the reason for
the transfer to Battery
mode.
Update the configuration.
The UPS is operating
normally.
The system is configured to
run in Redundant mode and is
operating within normal load
limits.
Redundant mode is not
available and the Loss of
Redundancy alarm is present.
Reduce the load and verify
that no other alarms are
present.
No action is required. The
UPS is operating normally.
The system is configured to
run in Non-redundant mode
and is supporting between a
9KVA and 12KVA load.
5-11
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