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15
TROUBLESHOOTING
Use the table below to solve minor installation and operation problems. Refer to the APC Web site,
www.apc.com
, for assistance with complex UPS problems.
PROBLEM AND POSSIBLE
CAUSE
S
OLUTION
UPS WILL NOT TURN ON
Battery not connected properly. Check that the battery connectors are fully engaged.
button not pushed. Press the button once to power the UPS and the connected equipment.
UPS not connected to utility
power supply.
Check that the power cable from the UPS to the utility power supply is securely
connected at both ends.
Very low or no utility voltage. Check the utility power supply to the UPS by plugging in a table lamp. If the
light is very dim, have the utility voltage checked.
UPS WILL NOT TURN OFF
button not pushed. Press the button once to turn the UPS off.
Internal UPS fault. Do not attempt to use the UPS. Unplug the UPS and have it serviced
immediately.
UPS BEEPS OCCASIONALLY
Normal UPS operation when
running on battery.
None. The UPS is protecting the connected equipment.
UPS DOES NOT PROVIDE EXPECTED BACKUP TIME
The UPS battery(s) are weak
due to a recent outage or
battery(s) are near the end of
their service life.
Charge the battery(s). Batteries require recharging after extended outages. They
wear faster when put into service often or when operated at elevated
temperatures. If the battery(s) are near the end of their service life, consider
replacing the battery(s) even if the Replace Battery LED is not illuminated.
FRONT PANEL LEDS FLASH SEQUENTIALLY
The UPS has been shut down
remotely through software or an
optional accessory card.
None. The UPS will restart automatically when utility power returns.
ALL LEDS ARE OFF AND THE UPS IS PLUGGED INTO A WALL OUTLET
The UPS is shut down and the
battery is discharged from an
extended outage.
None. The UPS will return to normal operation when the power is restored and
the battery has a sufficient charge.
BYPASS AND OVERLOAD LEDS ILLUMINATE, UPS EMITS A SUSTAINED ALARM TONE
The UPS is overloaded The connected equipment exceeds the specified “maximum load” as defined in
Specifications on the APC Web site, www.apc.com
.
The alarm remains on until the overload is removed. Disconnect nonessential
equipment from the UPS to eliminate the overload condition.