APC SUA500PDR manual All LEDs are off and the UPS is wired to input utility power

Troubleshooting

Problem and/or Possible Cause	Solution
All LEDs are off and the UPS is wired to input utility power
The UPS is shut down or the battery is	None: The UPS will restart automatically when utility power is restored and
discharged from an extended outage.	the battery has a sufficient charge.
The Overload LED is illuminated and the UPS emits a sustained alarm tone
The UPS is overloaded.	The connected equipment exceeds the specified “maximum load” as defined
	in Specifications listed on the rating label located on the UPS.
	The alarm remains on until the overload is removed. Disconnect nonessential
	equipment from the UPS to eliminate the overload condition.
	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.
The Replace Battery/Battery Disconnected LED is illuminated
The Replace Battery/Battery	Check that the battery connectors are fully engaged.
Disconnected LED flashes and a short
beep is emitted every two seconds to
indicate the battery is disconnected.
Weak battery	Allow the battery to recharge for 24 hours and perform a self-test. If the
	problem persists after recharging, replace the battery.
Failure of a battery self-test: Replace	Allow the battery to recharge for 24 hours. Perform the self-test procedure to
Battery/Battery Disconnected LED	confirm the replace battery condition. The alarm stops and the LED clears if
illuminates and the UPS emits short	the battery passes the self-test.
beeps for one minute. The UPS repeats	If the battery fails again, it must be replaced. The connected equipment is
the alarm every five hours.
	unaffected.
The input circuit breaker trips
The connected equipment exceeds the	Unplug all nonessential equipment from the UPS.
specified “maximum load” as defined	Reset the circuit breaker.
in Specifications listed on the rating
label located on the UPS.
The AVR Boost or AVR Trim LEDs are illuminated
The system is experiencing very high or	Have a qualified service personnel check your facility for electrical
low utility voltage.	problems. If the problem persists, contact the utility company for further
	assistance.

10