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Troubleshooting – Status and Alarm Messages
990-2282A-001 Smart-UPS® VT 10-40 kVA 400V, 208V, 200V – Operation 35
PBus Communication
Fault on Cable 2.
Communication fault detected on the
PBus 1 or PBus 2.
Check PBUS 1 or PBus 2 wiring.
If this does not help contact APC.
PBus Termination Fault
on Cable 1.
PBus 1 or PBus 2
termination is missing.
Check if termination is present. If this
does not help contact APC.
PBus Termination Fault
on Cable 2.
PBus 1 or PBus 2
termination is missing.
Check if termination is present. If this
does not help contact APC.
Parallel Configuration
Fault.
The parallel system has not been con-
figured correct.
Contact APC.
Parallel Redundancy
Restored.
The parallel redundancy has been
restored.
No corrective action is necessary.
Replace Batt(s). One or more Battery Modules need
replacement (only applicable with
internal batteries).
See the section How to replace and
install a battery module for proce-
dures.
Runtime Is Below Alarm
Threshold.
The predicted runtime is lower than
the user-specified minimum runtime
alarm threshold. Either the battery
capacity has decreased, or the load
has increased.
Option 1: Allow the battery modules
to recharge.
Option 2: If possible, increase the
number of battery modules.
Option 3: Reduce the load.
Option 4: Decrease the alarm
threshold.
Contact APC Customer Support
(see back cover).
Site Wiring Fault. Wrong phase rotation on the input
side. The UPS will continue to supply
conditioned power from batt.
An electrician should check that the
UPS has been wired properly.
Shutdown Due To Low
Battery.
The UPS was in Battery Operation
and shut down the load when no more
battery power was available.
No corrective action is necessary.
Note: If the problem reoccurs, con-
sider increasing the battery capacity.
Static Bypass Switch
Fault.
The Static Bypass Switch has failed. Contact APC Customer Support (see
back cover).
System Failure Detected
by Surveillance.
The system has detected an internal
error.
Check for other alarms and contact
APC customer support if the problem
persists.
System Start Up
Configuration Failed.
System configuration error. Unable to
determine system voltage and/or
Enclosure size.
Check for other alarms and contact
APC customer support if the problem
persists.
Display Message Meaning Corrective Action