Specifications

SURT Stack/Rack-Mount 12U 14000/18000 VA 200 Vac 15000/20000 VA 208/240 Vac 28
General
Fault
Shutdown Due To Low
Battery.
The UPS shutdown while on battery
operation.
No corrective action is necessary.
Note: Should this situation reoccur,
consider increasing battery capacity.
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.
• Correct input voltage to
acceptable frequency or voltage.
• Adjust bypass upper and lower
voltage limits through NMC
software.
If the problem persists contact APC
Customer Support. Refer to “Contact
Information” on page 32 in this
manual.
Mains Not Available.
Input Freq/Volt Out of
Range.
The frequency or voltage is out of
acceptable range for normal
operation.
Correct input voltage to acceptable
frequency or voltage.
If the problem persists contact APC
Customer Support. Refer to “Contact
Information” on page 32 in this
manual.
Emergency PSU Fault. Redundant Emergency Power Supply
Unit (PSU) is not working. Internal
diagnostic fault.
Contact APC Customer Support.
Refer to “Contact Information” on
page 32 in this manual.
Fan Fault. A fan has failed. Contact APC Customer Support.
Refer to “Contact Information” on
page 32 in this manual.Static Bypass Switch Fault. The static bypass switch has failed.
System Failure Detected by
Surveillance.
The system has detected an internal
error.
Check for other alarms.
If the problem persists contact APC
Customer Support. Refer to “Contact
Information” on page 32 in this
manual.
System Not Synchronized
to Bypass.
System cannot synchronize to bypass
mode.Bypass mode may be
unavailable.
Option 1) Decrease input frequency
sensitivity.
Contact APC Customer Support.
Refer to “Contact Information” on
page 32 in this manual.
Option 2) Correct bypass input
voltage to provide acceptable
frequency or voltage.
UPS In Bypass Due To
Fault.
The UPS has transferred to bypass
mode due to a fault.
Contact APC Customer Support.
Refer to “Contact Information” on
page 32 in this manual.
UPS In Bypass Due To
Overload.
The load has exceeded the power
capacity.
Decrease the load.
UPS Is Overloaded. The load has exceeded the system
power capacity.
Decrease the load.
Condition LCD Message Reason for Message Corrective Action