B.2 Alarms, Faults, and Warnings
A warning or alarm or fault can be displayed during the operation of the system to alert you to certain conditions and/or to
require action or other operation.
Alarm/Warning Description Action
Ambient
Overtemperature
Ambient overtemperature detection.
Verify the ventilation openings are not block or contact
Vertiv Technical Support.
Automatic Battery
Test
The battery is under automatic periodic battery maintenance
discharge test (20% capacity discharge).
None required
Autostart
After UPS shutdown at EOD, the UPS automatically starts upon
restoration of input power.
None required
Battery End of
Discharge
Inverter turned off due to battery EOD. None required
Battery Equalize
Charge
The battery is forced to be in boost charge state. None required
Battery Ground
Fault
A battery short circuit to ground has been detected. Contact Vertiv Technical Support.
Battery low pre-
warning
This alarm occurs when the battery reaches the low battery setting
and is near the end of battery power.
Check the upstream input breakers to ensure they are
closed and/or orderly shutdown connected equipment.
Battery Maintain Start the battery maintenance discharge test
Battery Reset The battery state restores to a new one. None required
Battery reversed The battery polarity is reversed.
Call a qualified electrician to verify the battery wiring or
Contact Vertiv Technical Support.
Battery terminal
abnormal
A short circuit or arc has been detected in the battery wiring, battery
connectors or battery fuse.
Contact Vertiv Technical Support.
Battery test fail The battery capacity dropped below the threshold for the battery test. Replace battery.
Battery Voltage
High
Upon startup or auto restart the system measures that the battery
voltage and it exceeds high voltage range.
Contact Vertiv Technical Support.
BCB Closed BCB state (closed). None required
BCB Open BCB is opened.
If the battery is being serviced, this is normal. If not being
serviced contact Vertiv Technical Support.
BCB Status
Abnormal
Logic conflict between BCB drive signal and feedback signal. Contact Vertiv Technical Support.
Bypass abnormal
The bypass input voltage or frequency exceeds normal operating
range.
Check the upstream bypass input breakers to ensure
they are closed.
Bypass abnormal
shutdown
While operating on bypass power, the bypass input voltage or
frequency exceeds normal operating range; the output is off and load
will no longer have power.
Bypass backfeed A bypass short circuit has been detected while in battery mode. Contact Vertiv Technical Support.
Bypass Input
Breaker Open
The bypass switch is opened. None required
Table 9.2 UPS Alarm and Warning Messages
66 Proprietary and Confidential ©2023 Vertiv Group Corp.
Vertiv™ Liebert® EXS Installer/User Guide
To Next Page
Loading...
