SUA1000RMI2U continuously beeping

[Mac1122_apc]

This was originally posted on APC forums on 1/11/2016

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Hello,

my SUA1000RMI2U is continuously beeping 2 or 3 times per second, all the leds are flashing 2 or 3 times per second. 

short movie: YT

I will be grateful for any information.

[BillP · Accepted solution]

This reply was originally posted by Bill on APC forums on 1/12/2016

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Hi,

It *might* be a battery with very low voltage, but it is probably an internal fault.

To check the batteries on a 24Vdc system, the nominal charger voltage is 27.2Vdc. The variation is  2.1% of the nominal. The voltage range is 26.62 to 27.79Vdc for a good battery pack. 

If the batteries are good you should reset the UPS.

1) Turn off and unplug UPS from wall
2) Press and hold the OFF button again
3) You may see a quick flash of the LED's and you should hear an audible "click" from the UPS.
4) Plug UPS back into the wall and turn UPS back on

If the batteries are good and resetting does not resolve the issue the UPS should be replaced.