APC Smart-UPS XL 1000VA User Manual download pdf (Page 14)

PROBLEM AND POSSIBLE

CAUSE

OLUTION

THE OVERLOAD LED IS LIT AND THE UPS EMITS A SUSTAINED ALARM TONE

The UPS is overloaded. The connected equipment exceeds the specified “maximum load” as de-

fined in Specifications at the APC web site, www.apc.com.

The alarm remains on until the overload is removed. Disconnect nonessen-

tial equipment from the UPS to eliminate the overload.

The UPS continues to supply power as long as it is online and the circuit

breaker does not trip; the UPS will not provide power from batteries in the

event of a utility voltage interruption.

If a continuous overload occurs while the UPS is on battery, the unit turns

off output in order to protect the UPS from possible damage.

THE REPLACE BATTERY LED IS LIT

Replace Battery LED flashes

and short beep is emitted every

two seconds to indicate the

battery is disconnected.

Check that the battery connectors are fully engaged.

Weak battery. Allow the battery to recharge for 24 hours. Then, perform a self-test. If the

problem persists after recharging, replace the battery.

Failure of a battery self-test. The UPS emits short beeps for one minute and the replace battery LED

illuminates. The UPS repeats the alarm every five hours. Perform the self-

test procedure after the battery has charged for 24 hours to confirm the

replace battery condition. The alarm stops and the LED clears if the bat-

tery passes the self-test.

THE SITE WIRING FAULT LED IS LIT

The site wiring LED is lit

(rear panel).

120V models only.

The UPS is plugged into an improperly wired utility power outlet. Wiring

faults detected include missing ground, hot-neutral polarity reversal, and

overloaded neutral circuit. Contact a qualified electrician to correct the

building wiring.

THE INPUT CIRCUIT BREAKER TRIPS

The plunger on the circuit

breaker (located above the input

cable connection) pops out.

Reduce the load on the UPS by unplugging equipment and press the

plunger in.

AVR BOOST OR AVR TRIM LEDS LIGHT

AVR Boost or Trim LEDs light

Your system is experiencing

excessive periods of low r high

voltage.

Have qualified service personnel check your facility for electrical prob-

lems. If the problem continues, contact the utility company for further

assistance.

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APC Smart-UPS XL 1000VA User Manual Page 14

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