| Troubleshooting | |
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Problem and/or Possible Cause | Solution | |
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The Overload LED is illuminated and the UPS emits a sustained alarm tone | ||
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The UPS is overloaded. | The connected equipment exceeds the specified “maximum load” as defined | |
| in Specifications on the APC Web site, www.apc.com. | |
| 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. | |
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The Replace Battery/Battery Disconnected LED is illuminated | ||
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The Replace Battery/Battery | Check that the battery connectors are fully engaged. | |
Disconnected LED flashes and a short |
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beep is emitted every two seconds to |
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indicate the battery is disconnected. |
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Weak battery | Allow the battery to recharge for 24 hours and perform a | |
| problem persists after recharging, replace the battery. | |
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Failure of a battery | Allow the battery to recharge for 24 hours. Perform the | |
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 | |
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. | ||
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The Site Wiring Fault LED on the rear panel is illuminated (120 V model only) | ||
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The UPS is plugged into an improperly | Wiring faults detected include missing ground, | |
wired utility power outlet. | and overloaded neutral circuit. | |
| Contact a qualified electrician to correct the building wiring. | |
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The input circuit breaker trips |
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The connected equipment exceeds the | Unplug all nonessential equipment from the UPS. | |
specified “maximum load” as defined | Reset the circuit breaker. | |
in Specifications on the APC Web site, | ||
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www.apc.com. |
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The AVR Boost or AVR Trim LEDs are illuminated | ||
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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. | |
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