APC Official Manual for Power Supplies: Best Practices and Troubleshooting

Problem and Possible Cause	Solution
All indicators flash sequentially
The UPS has been shut down remotely	None. The UPS will restart automatically when utility power returns.
through software or an optional accessory
card.

All indicators are illuminated and the UPS emits a constant beeping sound

The UPS detects an internal fault.

Do not attempt to use the UPS. Disconnect the UPS from utility and battery power. Have the UPS serviced immediately.

Battery Fault indicator is illuminated

The Battery Fault LED flashes and a	Check that the battery connectors are fully engaged.
short beep is emitted every two seconds
to indicate the battery is disconnected.
Weak battery.	Allow battery to recharge for 24 hours and perform a self-test. If the problem
	persists after recharging, replace battery.

Failure of a battery self-test: Battery Fault LED illuminates and the UPS emits short beeps for one minute. The UPS repeats the alarm every five hours.

Allow battery to recharge for 24 hours. Perform the self-test procedure to confirm the replace battery condition. The alarm stops and the LED clears if the battery passes the self-test.

If battery fails again, it must be replaced. The connected equipment is unaffected.

Bypass indicator is illuminated

Bypass mode has been turned on through If bypass mode has been selected, ignore the LED. an accessory.

Overload indicator is illuminated and the UPS emits a sustained alarm tone

A UPS overload condition exists. Disconnect nonessential equipment from UPS to eliminate overload condition.

Bypass and Overload indicators are illuminated and the UPS emits a sustained alarm tone

A UPS overload condition has occurred. Connected equipment exceeds specified “maximum load” as defined in Specifications on APC Web site, www.apc.com.

The alarm remains on until the overload is removed. Disconnect nonessential equipment from UPS to eliminate overload condition.

The UPS continues to supply power as long as it is on line and the circuit breaker does not trip. The UPS will not provide power from batteries in the event of a utility voltage interruption.

Fault indicator is illuminated

An internal UPS fault has occurred.

Do not attempt to use UPS. Turn UPS off and have it serviced immediately. Refer to APC Web site, www.apc.com.

Bypass and Fault indicators are illuminated and the UPS emits a sustained alarm tone

The UPS has automatically switched to Bypass mode. Bypass mode operation is the result of an internal UPS fault or an overload condition while operating on utility power.

In the event an internal UPS fault occurs, Do Not attempt to use UPS. Turn UPS off and have it serviced immediately. Refer to APC Web site, www.apc.com.

SURTA 1500XL/1500XLJ/2200XL Series 100/120 Vac Tower/Rack-Mount 2U 11