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7: TROUBLESHOOTING Use the chart below to solve minor UPS installation problems. Also refer to the APC web site. Con-
tact APC for assistance with complex UPS problems.
PROBLEM AND POSSIBLE CAUSE SOLUTION
UPS WILL NOT TURN ON
ON button not pushed. Press the ON button once to power the UPS and the load.
UPS not connected to AC power
supply.
Check that the power cable from the UPS to the utility power
supply is securely connected.
UPS input circuit breaker tripped. Reduce the load on the UPS by unplugging equipment and re-
setting 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.
Rear Connector Plug not engaged Check the back of the unit to verify that the Rear Connector
Plug is fully engaged.
Battery not connected properly. Check that both 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 re-
setting 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 sensitivity.
UPS BEEPS OCCASIONALLY
Normal UPS operation. None. The UPS is protecting the load (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 re-
place battery LED indicator is not yet lit.
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.