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5: TROUBLESHOOTING
Use the chart below to solve minor Smart-UPS 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 connector is 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 con-
nected 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 is weak due to a
recent outage or is near the end of
its service life.
Charge the battery. Batteries require recharging after extended outages. They wear
faster when put into service often or when operated at elevated temperatures. If the
battery is near the end of its service life, consider replacing the battery even if the
replace battery LED is not yet lit.
ALL LEDS ARE ILLUMINATED AND THE UPS EMITS A CONSTANT BEEPING
Internal UPS fault. Do not attempt to use the UPS. Turn the UPS off and have it serviced immediately.
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.
THE SITE WIRING FAULT LED IS ILLUMINATED
The UPS is plugged into an im-
properly wired utility power out-
let.
Wiring faults detected include missing ground, hot-neutral polarity reversal, and over-
loaded neutral circuit.
Contact a qualified electrician to correct the building wiring.