Question about APC Back-UPS XS900 (BX900) UPS System

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Upc 900 why my overload alarme with no charge on it?

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The overload circuit normally collects the current information from the inverter leg. At times when there is an actual overload, the protective circuit picked up the excess current as compared to the calculated value and thus gives an alarm. However at times when the inverter leg is short circuit or a leakage it also gives the same overload current. Is the inverter on when it gives the overload alarm? Please let us know.

Posted on Mar 30, 2011

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Continuous Beeping (theamber On Battery LED will be illuminated)
This alarm indicates that the UPS has reached aLow Battery condition and will soon shutdown. The UPS can only operate onbattery for a limited amount of time. In order to protect the unit's batteriesfrom discharging too much, the UPS will shutdown and turn off its output. Towarn you that the unit will soon shutdown, the UPS will sound this alarm 2minutes before actual shutdown. With optional Powerchute Plus software, 2minutes can be changed to 5, 7, or 10 minutes to give you more of a warning ofimpending shutdown. If you hear this tone, you should immediately gracefullyshutdown your operating system to prevent data loss or corruption.
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Constant, Solid Tone (the red Overload LEDwill be illuminated)
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Continuous Beeps for One Minute; RepeatedEvery 5 Hours (Replace Battery LED will be illuminated)
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SO bad, and a bad response... I have 2 UPCs one started beeping for no reason, and will not stop...even when plugged into the wall with the battery disconnected... The other one is still silent. SO the...


These beep error codes may help you.
1. Four beeps every 30 seconds (On Battery LEDwill be illuminated)
This alarm indicates that the Battery Power Suppliedoutlets are now supplying battery power as opposed to power from the utility.If the UPS determines that the input utility power is unsafe for your computerequipment, the UPS will switch to battery power.
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5. Continuous Tone (On Battery LED will beflashing)
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6. Continuous Tone (On Line and On Battery LEDsflashing) Back UPS OFFICE 350, 400, and 500 ONLY
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