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Posted: 2021-06-2906:16 AM
Constant two beeps from APC + green and amber light flashing
This was originally posted on APC forums on 7/1/2011
I have a APC Backup UPS ES 500, today morning i switched it on and there was constant two beeps every 2 seconds with flashing Green and Amber light. Checked the forums but could not find any definite answer