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

 

 

 

SOLUTION

 

 

CAUSE

 

 

 

 

UPS WILL NOT TURN ON

 

 

 

 

Battery not connected prop-

Check that the battery connector is fully engaged.

erly.

 

 

 

 

 

 

 

 

 

 

 

 

 

button not pushed.

Press the

 

 

button once to power the UPS and the connected equipment.

 

 

 

 

UPS not connected to utility

Check that the power cable from the UPS to the utility power supply is se-

power supply.

curely 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 imme-

 

 

 

diately.

 

 

 

 

 

 

UPS BEEPS OCCASIONALLY

 

 

 

 

Normal UPS operation when

None. The UPS is protecting the connected equipment.

running on battery.

 

 

 

 

 

 

UPS DOES NOT PROVIDE EXPECTED BACKUP TIME

The UPS battery is weak due

Charge the battery. Batteries require recharging after extended outages.

to a recent outage or is near

They wear faster when put into service often or when operated at elevated

the end of its service life.

temperatures. If the battery is near the end of its service life, consider replac-

 

 

 

ing the battery even if the replace battery LED is not yet lit.

 

 

ALL LEDS 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 imme-

 

 

 

diately.

 

 

 

 

FRONT PANEL LEDS FLASH SEQUENTIALLY

 

The UPS has been shut down

None. The UPS will restart automatically when utility power returns.

remotely through software or

 

 

 

 

an optional accessory card.

 

 

 

 

 

 

ALL LEDS ARE OFF AND THE UPS IS PLUGGED INTO A WALL OUTLET

The UPS is shut down and the

None. The UPS will return to normal operation when the power is restored

battery is discharged from an

and the battery has a sufficient charge.

extended outage.

 

 

 

 

 

 

 

 

 

 

 

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APC 750 user manual Troubleshooting