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UPS Alarm and Status Messages
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APPENDIX A-UPS ALARM AND STATUS MESSAGES
Table 7 shows alarm and status messages as they appear in Liebert NXL’s touchscreen and in the
history log, along with a description and recommended actions, if any.
If the recommended action fails to correct the condition, contact your factory-authorized service pro-
vider.
The “Service Telephone Number” can be found by pressing “CONFIG,” “Ratings,” “More>>” on the
menu bar.
Table 7 Liebert NXL alarm and status messages
Event Message Event Definition Recommended Action
Auto Restart Fail
An Automatic Restart was enabled but has failed
to complete.
With Automatic Restart enabled, the unit
automatically restarts after an End of Discharge
(EOD) event. This alarm means that one of the
auto restart requirements was true, but failed
before the restart sequence completed.
For example, one conditional requirement for
Automatic Restart to occur is that the Rectifier
Input Voltage must be within acceptable limits. If,
during the restart sequence, the input voltage
drops out of tolerance, the Automatic Restart will
fail.
This alarm is self-clearing. When the condition is
no longer present, the alarm and any control
activity tied to the alarm reverts to normal.
Press “SILENCE” to silence the audible alarm.
Check the active events to determine the status of
the UPS.
If “Auto Restart Fail” is the only alarm present,
attempt a manual start of the unit by pressing
“Startup,” “Manual Start,” then following the prompts
to attempt to place the unit back online.
If the manual start fails, or if there are other alarms
present that won’t clear, contact your factory-
authorized service provider.
Auto Rexfer Failed
The condition that caused an automatic transfer
to bypass failed to clear within a specified time
delay.
An example of a recoverable transfer (one which
the controls may attempt to recover from
automatically) is an overload that exceeded the
overload time curve.
Press “SILENCE” to silence the audible alarm.
Press “RESET” to attempt to clear active events.
This does not clear the “Auto Retransfer Failed”
alarm.
If all other alarm conditions clear, attempt a manual
transfer back to Inverter by pressing “Transfer,”
“UPS.”
If the transfer is successful, press “RESET” to clear
this alarm from the Active Event Window. If the UPS
fails to transfer and the active messages do not
explain the reason, contact your factory-authorized
service provider.
Batt CB “#” Open
Battery Circuit Breaker “#” is open.
This status message is self-clearing. When the
condition is no longer present, the message and
any control activity tied to the status event reverts
to normal. (The Liebert NXL has eight battery
circuit breakers.)
Press “SILENCE” to silence the audible alarm.
Check the status of Battery Circuit Breaker “#”. If it
is open, the alarm is normal.
If Battery Circuit Breaker “#” is closed, contact your
factory-authorized service provider.