Troubleshooting
Problem and/or Possible Cause
Solution
Bypass and Overload LEDs are illuminated and the UPS emits a sustained alarm tone (Refer to “Display Panel Indicators” on page 6.)
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 nonessen- tial equipment from the UPS to eliminate the overload condition.
The UPS continues to supply power in the bypass mode and the circuit breaker does not trip; the UPS will not provide power from batteries in the event of a utility voltage interruption.
Bypass LED is illuminated (Refer to “Display Panel Indicators” on page 6.)
The bypass has been turned on through an accessory.
If bypass is the chosen mode of operation, ignore the illuminated LED.
Fault LED is illuminated (Refer to “Display Panel Indicators” on page 6.)
Internal UPS fault.
Do not attempt to use the UPS. Turn the UPS off and have it serviced immediately.
Fault and Overload LEDs illuminated and UPS emits a sustained alarm tone (Refer to “Display Panel Indicators” on page 6.)
The UPS has ceased sending power to connected equipment.
The connected equipment exceeds the specified “maximum load” as defined in Specifications on the APC web site, www.apc.com.
Disconnect nonessential equipment from the UPS to eliminate the over- load condition.
Press the | button, then the | button to restore power to connected |
equipment. |
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The Replace Battery/Battery Disconnected LED is illuminated (Refer to “Display Panel Indicators” on page 6.)
Battery is disconnected. | Check that the battery connectors are fully engaged. |
flashes and a short beep is emitted |
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every two seconds to indicate the bat- |
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tery 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 |
flashes and a short beep is emitted | to confirm the replace battery condition. The alarm stops and the LED |
for one minute. The UPS repeats the | clears if the battery passes the |
alarm every five hours. | If the battery fails again, it must be replaced. UPS output is maintained |
| during the |
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