Alarm Messages - Liebert Nfinity User Manual

In the event of an alarm, the User Interface LCD will display the last message regardless of the default
screen. A list of possible alarm messages is displayed below. If you encounter one of these or other alarm
messages and are unsure of the corrective action to take, please contact a qualified Liebert representative
at the number listed on the back of this manual.
Alarm Message
UPS Shutdown - End of
Discharge
Battery Module Fail
Number of Battery Mod-
ules changed
Number of Power Mod-
ules changed
Power Module Fail
Active control fail
Passive control fail
Power Module N+1
Redundancy Alarm
Output Off - Output
Short Circuit
Low Battery Warning
UPS On Automatic
Bypass
UPS Output Overload
UPS On Battery
Bypass source not qual-
ified
Transformer Fan Failure
Transformer tempera-
ture warning
Transformer tempera-
ture alarm
Input Voltage Setting
Error

ALARM MESSAGES

Cause
Shutdown because there is not
enough battery power left to sup-
port the load.
A Battery Module has failed
The number of Battery Modules
in the system has changed
The number of Power Modules in
the system has changed
A Power Module has failed
An ASC failure
A PSC failure
The UPS is no longer redundant
There was a short circuit on the
output.
Battery power is low
UPS switched to auto bypass for
various reasons.
The load exceeds the maximum
load capacity of the active Power
Modules.
The unit is supporting the load
from its batteries.
The unit will not transfer to auto-
matic bypass, instead the load
will be dropped
There is a transformer in the unit,
and at least one of the fans is not
running
The Transformer is slightly over
temperature.
The Transformer is greatly over
temperature.
The input voltage configuration
and bypass jumper settings do
not match.
Wait for return of AC Mains
Refer to Module LED indication section for correc-
tive action
No action
No action
Match module serial number to serial number in
Alarm Log or Event Log, replace module
Match module serial number to serial number in
Alarm Log or Event Log, replace module
Match module serial number to serial number in
Alarm Log or Event Log, replace module
Insert more Power Modules or replace faulty Power
Module to regain redundancy
Investigate fault on load side of UPS
No action, Set point for low battery time remaining
has been reached. Allow batteries time to recharge
Determine reason from Alarm Log or Event History
log why UPS is on Bypass
Reduce the amount of connected load or add
Power Modules
Wait for return of AC Mains
Investigate AC Mains supply
Investigate fans
Investigate possible airflow problem
Investigate immediately
Ensure that the bypass voltage matches the input
voltage and that the input voltage configuration
matches the bypass jumper setting
36
Action