Dell UPS 1920R User Manual
Page 71
71
Troubleshooting
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Table 16. Typical Alarms and Conditions (continued)
Alarm or Condition
Action
Possible Cause
Battery test did not run or
was interrupted.
One of the conditions listed in
“Running Automatic Battery
Tests” on page 55 was not
present.
Resolve the condition, then restart the test.
UPS on Battery
(Notice 168)
Intermittent Alarm
A utility failure has occurred
and the UPS is in Battery mode.
The UPS is powering the equipment with
battery power. Prepare your equipment for
shutdown.
Battery Disconnected
(Alarm 199)
Continuous Alarm
The UPS does not recognize the
internal batteries.
If the condition persists, contact your service
representative.
Battery voltage is lower than the
batteries disconnected level
defined for this UPS. This may
be due to a blown fuse,
intermittent battery
connection, or battery cable
being disconnected.
Verify that all batteries are properly connected.
If the condition persists, contact your service
representative.
Low Battery Warning
(Alarm 56)
Continuous Alarm
Battery time remaining or
battery capacity is lower than
the battery low warning level
defined for this UPS.
This warning is approximate. The actual time to
shutdown may vary depending on the UPS load
and presence of an External Battery Module
(EBM).
Shutdown Imminent
(Alarm 55)
Continuous Alarm
Communication to external
devices stops because the UPS
has entered a state where it may
abruptly stop operating without
further notice unless utility
returns.
The alarm is issued when the battery time
remaining reaches zero. All connected devices
should have already shut down gracefully.
Battery Test Failed
(Alarm 191)
Intermittent Alarm
A weak battery string was
detected during the last battery
test.
This is a warning notice. Dell recommends
that you replace the batteries soon.
Service Battery
(Alarm 149)
Continuous Alarm
A faulted battery string has
been detected and as a result,
the charger is disabled.
Contact your service representative.
Utility Not Present
(Alarm 59)
Intermittent Alarm
Utility level has fallen below the
Utility Not Present threshold
(typically <25 to 50V).
The UPS transfers to Battery mode if
supporting the load. The UPS shuts down if it
is not supporting the load.