990-1062, Revision 1 04/01 12
6: 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.
P
ROBLEM AND POSSIBLE CAUSE SOLUTION
UPS WILL NOT TURN ON
ON button not pushed. Press the ON button once to power the UPS and the connected equipment.
UPS not connected to AC power
supply.
Check that the power cable from the UPS to the utility power supply is securely con-
nected at both ends.
UPS input circuit breaker tripped. Reduce the load on the UPS by unplugging equipment and resetting the circuit breaker
(on the back of UPS) by pressing the plunger in.
Very low or no utility voltage. Check the AC power supply to the UPS by plugging in a table lamp. If the light is very
dim, have the utility voltage checked.
Battery not connected properly. Check that the battery connectors are fully engaged.
UPS WILL NOT TURN OFF
Internal UPS fault. Do not attempt to use the UPS. Unplug the UPS and have it serviced immediately.
UPS OPERATES ON BATTERY ALTHOUGH NORMAL LINE VOLTAGE EXISTS
UPS input circuit breaker tripped. Reduce the load on the UPS by unplugging equipment and resetting the circuit breaker
(on the back of UPS) by pressing the plunger in.
Very high, low, or distorted line
voltage. Inexpensive fuel powered
generators can distort the voltage.
Move the UPS to a different outlet on a different circuit. Test the input voltage with the
utility voltage display. If acceptable to the connected equipment, reduce the UPS sensi-
tivity.
UPS BEEPS OCCASIONALLY
Normal UPS operation. 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 bat-
tery is near the end of its service life, consider replacing the battery even if the replace
battery LED indicator is not yet lit.
ALL INDICATORS ARE LIT 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.
The UPS is overloaded. Check the UPS load display. Unplug unnecessary equipment, such as printers.
FRONT PANEL INDICATORS FLASH SEQUENTIALLY
The UPS has been shut down re-
motely through software or an op-
tional accessory card.
None. The UPS will restart automatically when utility power returns.
ALL INDICATORS ARE OFF AND THE UPS IS PLUGGED INTO A WALL OUTLET
The UPS is shut down and the bat-
tery is discharged from an extended
outage.
None. The UPS will return to normal operation when the power is restored and the bat-
tery has a sufficient charge.
THE REPLACE BATTERY LED IS LIT
Weak battery. Allow the battery to recharge for at least four hours. Then, perform a self-test. If the
problem persists after recharging, replace the battery.
Replacement battery not connected
properly.
Check that the battery connectors are fully engaged.
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