APC UPS CS 500 flashing OVERLOAD light and beeping continuously
Things always seem to go wrong with my computer when I'm away from home. My wife called me this morning and told me the computer had shut down, the Back-UPS CS 500 overload light was on and it was beeping. This system has been running w/out problem for a long time and I've not added any hardware to the UPS recently. I currently have my CPU, one monitor, the cable modem and a router plugged in so I don't think it's overloaded. The UPS has been working great and is about a year old with the original battery.
If it's not really overloaded what could have caused this alarm?