Powerware ups mod #PW9120100i
[SITE FAULT] alarm displaying/alarm beeper clearing but coming back after a short period after pushing on/off button
We have no trouble shooting manual
We have no trouble shooting manual
Computers & Internet - Powerware - Series 9 9120 UPS System
Answers & Comments
You have to turn socket of ups power cord 180 degrees, because the ups is measuring voltage between ground and ac-line.