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Posted: ‎2026-04-18 01:40 AM
Hi!
My BX750MI-GR UPS is less than 1 year old and it is the second time it just started randomly to beep and flash the lights together with relay clicks as you can see in the video attached.
If I unplug the mains input, the battery backup works as expected. If I plug it back into the mains, it starts beeping again and it never stops.
To solve the issue, I had to unplug everything from it, input and output, shut it down by holding the power button pressed and then plugging everything back in.
What does this beeping mean? Is it something wrong with the battery or logic board? Should I go to service with it?
Thanks!
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Posted: ‎2026-04-20 09:29 AM
Connect the unit to a system running APC Power Chute Software. The application will call out the active fault / error code.
Provide the following logs / screen capture from the software for review: Event, Data, UPS, Diagnostics
Questions Ask . . . 👍
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Posted: ‎2026-04-21 03:08 AM
I installed today PowerChute on a laptop and connected the UPS to the laptop via USB, but it seems that the logs were not remembered. I have only logs from today.
I ran a quick UPS diagnostics and it shows Passed.
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