Message 1 Message 2 Message 3 Definition
Load on bypass Test mode active Alarm active – Warning
This system is in warning operating mode, supplied by
the bypass, running in a system test mode, and has an
active warning. This means the system is in TEST
MODE, and something was determined to be outside
normal test operation.
Load on battery Test mode active Alarm active – Warning
This system is in warning operating mode, supplied by
the battery, running in a system test mode, and has an
active warning. This means the system is in TEST
MODE, and something was determined to be outside
normal test operations.
Load on inverter
Frequency converter mode
active
Alarm active – Warning
This system is in warning operating mode, supplied by
the inverter, operating as a frequency converter, and
has an active warning. This means the system is
operating, but something was determined to be outside
normal range.
Table 5.2 Warning Status Messages (continued)
Message 1 Message 2 Message 3 Definition
Load on inverter Output overload Transfer to bypass pending
This system is in critical operating mode, supplied by
the inverter, and the load is about to be transferred to
the bypass due to overload timeouts.
Load on inverter Alarm active – Critical View alarm log for details
This system is in critical operating mode, supplied by
the inverter. There is a critical fault in the system that
the user needs to view.
Load on bypass
Load Automatically
transferred to bypass
View alarm log for details
This system is in critical operating mode, supplied by
the bypass. The system moved the load to the bypass
due to a critical fault in the system.
Load on bypass Alarm active – Critical View alarm log for details
This system is in critical operating mode, supplied by
the bypass. The system is running on bypass not due to
auto transfer, and a critical fault is active in the system.
Load on battery X minutes remaining Load shutdown imminent
This system is in critical operating mode, supplied by
the inverter via the battery. The battery is extremely low
and the load will turn Off or transfer to bypass soon.
Load off Alarm active – Critical View alarm log for details
This system is in critical operating mode, load not
supplied by this unit. The load is not supplied for any
reason and a critical fault is active.
Load off / /
This system is in critical operating mode, load not
supplied by this unit. The load is not supplied and no
active fault is present.
Load on battery Alarm active – Critical View alarm log for details
This system is in critical operating mode, supplied by
the battery. The system is running on inverter via the
battery, is not in imminent shutdown and a critical fault
is active in the system.
Load off Service mode active / This system is Off with a service mode active.
Load on inverter Energy saving mode active Alarm active – Critical
This system is in critical operating mode, supplied by
the inverter. The system is running on inverter, with an
energy saving mode active and a critical fault is active in
Table 5.3 Critical Status Messages
5 Operator Control and Display
Panel
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Vertiv™ Liebert® APM2 30 to 120 kVA Modular UPS User Manual
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