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Apc Smart-UPS VT User Manual Page 39

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990-2282A-001 Smart-UPS® VT 10-40 kVA 400V, 208V, 200V – Operation 33
Troubleshooting
Status and Alarm Messages
This section lists the status and alarm messages that the UPS might display. The messages are listed in
alphabetical order, and a suggested corrective action is listed with each alarm message to help you
troubleshoot problems.
Display messages
Display Message Meaning Corrective Action
Automatic Self Test
Started.
The UPS has started pre-programmed
battery test.
No corrective action is necessary.
ABus Communication
Fault.
Communication fault detected on the
ABus.
Check ABus wiring. If this does not
help contact APC.
ABus Termination Fault. ABus termination is missing. Check if termination is present. If this
does not help contact APC.
Batt Temperature
Exceeded Upper Limit.
The temperature of one or more bat-
tery units has exceeded the system
specifications.
Contact APC Customer Support
(see back cover).
Battery over-voltage
warning.
The battery voltage is too high and
the charger has been deactivated.
Contact APC Customer Support
(see back cover).
Bypass Not Available
Input Freq/Volt Out Of
Range.
The frequency or voltage is out of
acceptable range for bypass. This
message occurs when the UPS is
online, and indicates that the bypass
mode may not be available if
required.
Correct the input voltage to provide
an acceptable voltage or frequency.
Discharged Battery. The UPS is in battery operation and
the battery charge is low.
Note: Runtime is limited in duration.
No corrective action is necessary.
Shut down the system and the load
equipment or restore incoming
voltage.
Emergency PSU Fault. The redundant Emergency Power
Supply Unit (PSU) is not working.
The UPS will continue to work nor-
mally, but the PSU should be
replaced.
Contact APC Customer Support
(see back cover).
EPO Activated. The Emergency Power Off switch has
been activated.
Deactivate the Emergency Power Off
switch.
Fan fault. A fan has failed. Contact APC Customer Support (see
back cover).
Int. Mech. Bypass
Switch Closed.
The internal mechanical switchgear is
closed.
No corrective action necessary. The
UPS is in internal mechanical bypass
operation.
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