New battery backup Model BVN900M1 is squealing.

[ForshDia]

Why is the new item squealing - only 5 items plugged into unit.  Unit plugged directly into wall.

[Teken]

The system will emit a continuous tone if one or more of the following conditions exist: Disconnected battery, battery failure / low, over load while on battery, over load while on AC.

Please refer to the following APC Resource for the user manual:

https://download.schneider-electric.com/files?p_enDocType=User+guide&p_File_Name=BU+UM+990-6275+MN01...

Since the hardware doesn’t have a data port you can’t see the power draw. As such unplug everything and add one device back.

This will help narrow down what device in a rough way is consuming too much power. The UPS you have is very small and only provides 400 watts as such may require a larger unit to provide the power you need whether 500 ~ 1500 watts.

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