Why does my Back-UPS Pro beep or emit a tone?

Solution

UPSs are generally installed and placed in places not easily seen by a user (i.e., under a desk, in a wiring closet, etc). Therefore, in order to provide proactive warnings of changing UPS and power conditions to users, APC's UPSs have audible tones. The Back UPS PRO has 4 different alarms:

4 Beeps Every 30 Seconds (the amber On Battery LED will be illuminated)
This alarm indicates that the UPS has transferred from On Line operation to On Battery operation. The Battery Power Supplied outlets are now battery powered. If the input voltage is determined to be unsafe for your computer equipment, the UPS will transfer to On Battery. The alarm will stop once the unit returns to On Line operation. Occasional transfers to On Battery should not be a matter of concern, but rather, should be considered normal operation. The UPS is trying to provide clean, safe, and reliable power.
Note: If the power disturbance is brief, you may only hear the unit beep once or twice.

Continuous Beeping (the amber On Battery LED will be illuminated)
This alarm indicates that the UPS has reached a Low Battery condition and will soon shutdown. The UPS can only operate on battery for a limited amount of time. In order to protect the unit's batteries from discharging too much, the UPS will shutdown and turn off its output. To warn you that the unit will soon shutdown, the UPS will sound this alarm 2 minutes before actual shutdown. With optional Powerchute Plus software, 2 minutes can be changed to 5, 7, or 10 minutes to give you more of a warning of impending shutdown. If you hear this tone, you should immediately gracefully shutdown your operating system to prevent data loss or corruption.
Note: This graceful shutdown will occur automatically if Powerchute PLUS software is being used.

Constant, Solid Tone (the red Overload LED will be illuminated)
This alarm indicates that the UPS has detected an Overload condition. If this alarm is sounded, try removing non-essential equipment. The alarm will remain until the load is reduced. To determine if your UPS is capable of handling the equipment you want to protect, visit APC's Sizing Guide at www.apcc.com/sizing.

Continuous Beeps for One Minute; Repeated Every 5 Hours (Replace Battery LED will be illuminated)
This alarm indicates that the UPS has failed its Self-Test of the battery. The unit will continue to sound this alarm until the unit passes the test. Try to let the unit charge for a few hours and then perform another Self-Test (Press and hold the on/off button until the second 'chirp', then release). If it fails and the unit is still in-warranty (two years from date of purchase), then contact APC. If the unit fails and its out of warranty, then order a replacement battey cartridge through your reseller, distributor, or from APC's web site.


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