Specifications

25Symmetra PX 48, 96, and 160 kW 400 V and 100 kW 208 V Operation
Not Synchronized Fault System cannot synchronize to AC
line and bypass mode may not be
available.
Option 1: Decrease the sensitivity to input
frequency.
Option 2: Correct the input voltage to
provide acceptable voltage/frequency.
Output Voltage Not In Range The output voltage is not within the
specified range.
Evaluate the threshold setting. If necessary,
adjust it for your situation. Contact APC
Customer Support.
Overload The load has exceeded the system
power capacity.
Option 1: Decrease the load.
Option 2: Add a power module to the
system.
Power Failure The input voltage is not acceptable
for normal operation.
Contact APC Customer Support.
Power Module Fault A power module has failed and
requires replacement.
See “Replace a power module” on page 19.
Redundancy Alarm Actual power module redundancy has
fallen below user-specified
redundancy alarm threshold. At least
one power module has failed, or the
load has increased.
Option 1: If possible, install additional
power modules. See “Replace a power
module” on page 19.
Option 2: Replace failed modules. See
“Replace a power module” on page 19.
Option 3: Reduce the load.
Option 4: Change alarm limit.
Redundancy Lost The UPS no longer detects redundant
power modules. One or more power
modules have failed, or the load has
increased.
Option 1: If possible, install additional
power modules. See “Replace a power
module” on page 19.
Option 2: Replace failed modules. See
“Replace a power module” on page 19.
Option 3: Reduce the load.
Option 4: Change alarm limit.
Redundant Intelligence Module
Fault
The redundant intelligence module
has failed and requires replacement.
Contact APC Customer Support.
Redundant Intelligence Module
in Control
The main intelligence module has
failed, and the redundant intelligence
module is functioning as the primary
intelligence module.
Contact APC Customer Support.
Replacement Battery Needed One or more battery units needs to be
replaced.
See “Replace a battery” on page 20
Runtime Alarm The predicted runtime is lower than
the user-specified minimum runtime
alarm threshold. At least one battery
module has failed or the load has
increased.
Option 1: Install additional battery modules.
See “Replace a battery” on page 20.
Option 2: Replace failed battery modules.
Option 3: Reduce the load.
Option 4: Change the alarm limit.
Display Message Meaning Corrective Action