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BX1500LCD suddenly freaks out, acts as if battery is zeroed out - what now?

APC UPS for Home and Office Forum

Schneider Electric support forum for our APC offers including Home Office UPS, Surge Protectors, UTS, software and services and associated products designed to share knowledge, installation, and configuration.


BX1500LCD suddenly freaks out, acts as if battery is zeroed out - what now?

This was originally posted on APC forums on 2/1/2011

My BX1500LCD (which I've loved) totally freaked out tonight and possibly bit the dust.

For its whole lifetime it's only been running at about a 15% load. Tonight was no different. Then out of nowhere the fan (which I've never heard before -- didn't realize it even had a fan) came on at full speed. There were no fault lights, overload indicators, or other indicators of badness on the display.

After this went on for 10 minutes I unplugged the UPS from the mains. Instead of switching to battery, it immediately turned off. I unplugged all equipment from it and plugged it in again. It flashed the "F01 - On-Battery Overload" fault code. I unplugged it from the mains again.

When I again plugged it back in, I don't get a fault code, don't get a replace battery indicator, don't get any overload or anything indicators. However, the battery charged bar has all segments off and the battery-shaped outline around it flashes while the UPS does a series of pairs of short, soft beeps. (dit-dit....pause...dit-dit, and so on).

Any idea what happened? I know I can order a new battery, but I don't want to spend the money on that if there's actually a hardware problem in the unit.


Adding some new info:

When I let it sit there "dit-ditting" for half an hour, the "dit-ditting" eventually stopped and instead of the flashing battery icon with all bars off, it suddenly kept the battery icon lit and three bars are lit. When I hold the power button for a second to activate the self-test, the self-test completes without any indication that anything's wrong. Does this all point toward the battery failing, or something more complicated than that?

Message was edited by: rlcarr
Adding some additional information