Maintenance
Liebert
®
APM
™
132
DC Bus Abnormal
Shut off inverter due to abnormal DC bus voltage.
Contact Liebert Services at 800-543-2378 for assistance.
System Transfer
The whole paralleled UPS system transferred to bypass at the same time. This message will
appear on the UPS which passive transfer to bypass.
DC Bus Overvoltage
Rectifier, inverter and battery converter were shutdown because DC bus voltage is too high.
Check whether there is a fault in rectifier side. If no, then check whether overload occurs.
Restart the inverter after resetting the fault. If fault does not clear, contact Liebert Services at 800-
543-2378 for assistance.
LBS Active
The LBS setting is active. The UPS is acting as an LBS master or slave in a dual bus
configuration.
Battery ground fault
Battery ground fault from dry contact signal. Contact Liebert Services at 800-543-2378 for
assistance.
Inverter turned On
manually
Manual Turn On via front panel
Inverter turned Off
manually
Manual Turn Off via front panel
EPO
Emergency Power Off
Transfer Confirm
Interrupted Transfer Confirm
Transfer Cancel
Interrupted Transfer is cancel
Unit Off Confirm
Unit Turned Off Confirm
System Off Confirm
System Turned Off Confirm
Fault Reset
Fault Reset
Alarm Silence
Alarm Silence
Turn On Fail
Turn On Fail
Alarm Reset
Audible Alarm Reset
Bypass Mode
UPS in Bypass Mode
Normal Mode
UPS in Normal Mode
Battery Mode
UPS in Battery Mode
Output Disabled
UPS Output Disabled
Maint. Disconnect Closed
Maintenance Disconnect Closed
Reserved
Output Disconnect Open
Output Disconnect Open
Battery Reverse
Connect the battery again and check the wiring of batteries.
No Battery
Check the battery and the wiring of batteries.
Auto start
After UPS was shutdown at EOD, inverter auto starts when utility is restored.
BCB closed
BCB closed from dry contact signal.
BCB open
BCB open from dry contact signal.
Battery Float Charging
Battery is float charging.
Battery Boost Charging
Battery is boost charging.
Battery Discharging
Battery is discharging.
Battery Period Testing
Battery is period self-testing.
Batt. Capacity Testing
Battery is capacity self-testing.
Batt. Maint. Testing
Battery is maintenance self-testing.
Inverter in Setting
Inverter is in parameter setting.
Rectifier in Setting
Rectifier is in parameter setting.
Batt. Converter Fault
Battery converter output voltage beyond limits or battery fuse failed. Battery converter shuts
down. Battery backup not available.
Operation Invalid
This record is registered following an incorrect operation.
Table 57
UPS status messages
(continued)
Event Message
Description / Suggested Action (if any)