I have not used my APC Smart UPS 3000 (SUA3000I) for 2 months. When I switch it on without mains connection, so only on battery all works normal.
As soon as I connect main power 5 led's are going to flash. The three right to on/off buttons and two left. Only the led for ONLINE burns as usual.
If led's are flashing and I disconnect from main power, the situation does not change.
Reset/brain dead the UPS to see if the issue is resolved.
1) Turn off all attached equipment2) Turn off and unplug UPS from wall3) Press and hold the OFF button again4) You may see a quick flash of the LED's and you should hear an audible ""click"" from the UPS.5) Plug UPS back into the wall and turn UPS back on
If the issue continues please video the sequence and attach the video to your reply post.
Thanks this solved the problem!!
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