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Back-UPS ES 550 & 750 3
Troubleshooting
Master Function Disabled Master Enable LED -
OFF
None
Problem Probable Cause Solution
Back-UPS will not turn on. Battery is disconnected or utility power is
not available at the wall outlet.
Connect the battery and ensure power is available at the wall outlet.
No power available at the Surge
Protection Only outlets.
Surge Protection Only outlets have been
overloaded and disconnected by the circuit
breaker.
Reduce the amount of equipment plugged into Surge Protection Only
outlets and re-set the circuit breaker.
Utility power not available at the wall
outlet.
Ensure the fuse or circuit breaker for the outlet is not tripped, and that
the wall switch controlling the outlet (if any) is in the ON position.
Connected equipment loses power. Equipment is connected to the Surge
Protection Only outlets.
Ensure the equipment you want to stay powered during a power
failure is plugged into the Battery Backup/Surge Protection outlets
and NOT the Surge Protection Only outlets.
The Back-UPS is overloaded. Make sure the equipment plugged into the Battery Backup/Surge
Protection outlets of the unit are not overloading the capacity of the
unit. Try removing some of the equipment and see if the problem
continues.
PowerChute Personal Edition software has
performed a shutdown due to a power
failure.
The Back-UPS is operating normally.
The Back-UPS has exhausted its available
battery power.
The Back-UPS can only operate on battery power for a limited
amount of time. The unit will eventually turn off when the available
battery power has been used. Re-charge for a minimum of 16 hours.
Connected equipment does not accept the
step-approximated sine waveform of the
Back-UPS.
The output waveform is designed for computers and computer-related
equipment. It is not designed for use with motor-type equipment.
The Back-UPS may require service. Contact APC Technical Support.
The Power On indicator is lit and
the Back-UPS is beeping four
times every 30 seconds.
The Back-UPS is using battery. The Back-UPS is operating normally and using battery power. Once
On Battery, you should save your current work, power down your
equipment, and turn the unit OFF. Once normal power is restored, you
may turn the unit back ON and power your equipment.
The Power On indicator flashes
once per second and the Back-
UPS beeps once per second at the
same time.
Battery capacity is low (about 2 minutes of
use remaining).
The Back-UPS is about to shut off due to a low battery charge
condition! When the unit beeps once every second, the battery has
about 2 minutes of power remaining. Immediately power down your
computer and turn the unit OFF. When normal power returns, the unit
will recharge the battery.
Inadequate runtime. The battery is not fully charged. Allow the unit to charge by leaving it plugged into the wall for at least
16 hours.
Battery is near the end of useful life. As a battery ages, the amount of runtime available will decrease. You
can replace the battery by ordering one at www.apc.com. Batteries
also age prematurely if the Back-UPS is placed near excessive heat.
The device connected to the
Master outlet goes into Sleep or
Standby mode, but the equipment
connected to the Controlled
outlets do not turn off.
The “green” function is turned off or the
threshold setting is incorrect.
Re-configure the Master and Controlled outlets. See “Enable the
oulets” on page 2.
The threshold setting of the device
connected to the Master outlet is not
configured properly.
Re-configure the threshold settings of the device connected to the
Master outlet.
Power is not supplied to some
outlets.
The Controlled Outlets may be turned OFF. Disable the Master/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.
Re-configure the Master Outlet, ensure the device connected to the
Master Outlet is in sleep or standby mode, or is OFF, when the
threshold is set.
LED Visual Indicator Audible Alarm Action