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

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Warning sound come on

I was away for 4 days, came home and the warning nose was on. if i shut the system off, then turn it on, it seems to reset and all is normal. but then after an amount of time, the warning sound comes on again.
the system has been less then year.

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Most if not all units come with a one year warranty. If you bought yours used check the serial number with APC to see if your unit is under warranty. If it is they will send you a new or refurbished one. They have decent customer service and ship pretty fast. Is that warning noise illuminating the replace battery led? If so you may need a new battery especially if it is over a couple of years old. It is cheaper in most cases to get a higher capacity third party battery and replace it yourself then to buy a new ups. Unless yours is not functioning properly or you need a higher capacity unit. Just recycle the batteries and sell the unit if you upgrade.

Posted on Nov 21, 2008

  • Radiorara Nov 21, 2008

    Another solution would be to download the manual for your ups unit. There are corrective actions that you can do as listed in their pdf files. You can lower the sensitivity of some of the ups units so they are not going to battery power as frequently and this will extend the life of your ups. If your incoming power is "dirty" then consider buying a voltage regulator such as the apc 1200R and putting it between your ups and the wall. These voltage regulators are better than most ups's that include avr protection and this will prevent the ups from errors and constantly coming on and buzzing as you are supplying clean power to the unit. I have a few of these setups and they work flawlessly even with older apc units like the backups280 and 800 RT. The true advantage is being preventative and not having to spend hard earned money replacing expensive computer and video equipment and the hassle of downtime.


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