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The battery has reached the end
of its useful life.
Replace the battery (APCRBC123).
The REPLACE
BATTERY indicator
is illuminated.
The battery has reached the end
of its useful life.
Replace the battery (APCRBC123).
The OVERLOAD
indicator is
illuminated.
The equipment connected to the
unit is drawing more power than
the unit can provide.
Disconnect non-essential equipment
from the BATTERY BACKUP outlets
and connect the equipment to SURGE
ONLY outlets.
The SYSTEM
FAULT indicator is
illuminated, all the
front panel
indicators are
flashing.
There is an internal fault.
Determine which internal fault message
is displayed by matching the number
displayed on the LCD with the
corresponding Fault Message (see
System Faults) and contact APC
Technical Support.
System Faults:
 F01 - On-Battery Overload
 F02 - On-Battery Output Short
 F03 - On-Battery Xcap
Overload
 F04 - Clamp Short
 F05 - Charger Fault
 F06 - Relay Welding
 F07 - Temperature
 F08 - Fan Fault
 F09 - Internal Fault
Power is not
supplied to some
outlets.
Power to the Controlled Outlets
has intentionally been turned off.
Confirm that the correct peripherals are
connected to Controlled Outlets. If this
feature is not desired, disable the
Power-Saving Master and Controlled
Outlets.
The Controlled
Outlets
are not supplying
power, even though
the Master device is
not in sleep mode.
The Master Outlet threshold may
be incorrectly set.
Adjust the threshold when the Master
outlet signals the Controlled Outlets to
shut down.