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Troubleshooting – Status and Alarm Messages
34 Smart-UPS® VT 10-40 kVA 400V, 208V, 200V – Operation 990-2282A-001
Int. Mech. Bypass
Switch Open.
The internal mechanical switchgear is
open.
No corrective action is necessary.
Low-Battery. The UPS is in battery operation and
the battery charge is low.
Note: Runtime is limited in duration.
Shut down the system and the load
equipment or restore incoming volt-
age.
Load Is No Longer
Above Alarm Threshold.
The load previously exceeded the
alarm threshold and the situation has
been corrected either because the load
decreased or the threshold was
increased.
No corrective action is necessary.
Load Power Is Above
Alarm Threshold.
The load has exceeded the user-
specified load alarm threshold.
Option 1: Use the display interface to
raise the alarm threshold.
Option 2: Reduce the load.
Parallel Redundancy
Below Alarm Threshold.
The load has exceeded the user
specified load alarm threshold.
Option 1: Use the display interface to
raise the alarm threshold.
Option 2: Reduce the load.
Parallel redundancy is now restored.
Mains Not Available.
Input Freq/Volt Out of
Range.
The frequency or voltage is out of
acceptable range for normal
operation.
Correct the input voltage to provide
acceptable voltage or frequency.
Min Runtime Restored. The system runtime dropped below
the configured minimum and has
been restored. Additional Battery
Modules were installed, the existing
Battery Modules were recharged, the
load was reduced, or the threshold
was decreased.
No corrective action is necessary.
No Batteries Are
Connected.
No battery power is available. Check that the batteries are inserted
properly.
No Master is Present in
the Parallel System.
No parallel master is present. The
parallel system will not be able to
function properly.
Contact APC.
Number of Battery
Modules Decreased.
One or more battery modules were
removed.
No corrective action is necessary.
Number of Battery
Modules Increased.
One or more battery modules were
added.
No corrective action is necessary.
Overload on a Parallel
Unit.
One or more systems has overload.
Note that the entire parallel system
will not be able to return from bypass.
No corrective action is necessary.
PBus Communication
Fault on Cable 1.
Communication fault detected on the
PBus 1 or PBus 2.
Check PBus 1 or PBus 2 wiring.
If this does not help contact APC.
Display Message Meaning Corrective Action