richard gagnon
New Member
I have a Best Fortress, LI 460VA UPS that appears to be working
normally. The unit powers up ok and goes through a self-test, which
then shows pass. Then the alarm sounds and the alarm light flashes. I
get an alarm light with A0 on the 4 digit readout. I can hit cancel to
quiet the alarm but the alarm light continues to flash. The display
continues to show A0. I can check the battery voltage and power usage
but the display returns to A0 after a couple of seconds. The unit has
a serial port but I do not use it. Three years ago I took the unit out
of service when the batteries failed. I just found a couple of new 12v
batteries and powered up the unit with the resulting conditions.
When I disconnect the 60hz mains the unit goes into battery operation
as it should and supplies 120vac.
Anyone have any ideas and the list of possible fault codes ?
Thank you.
Richard
normally. The unit powers up ok and goes through a self-test, which
then shows pass. Then the alarm sounds and the alarm light flashes. I
get an alarm light with A0 on the 4 digit readout. I can hit cancel to
quiet the alarm but the alarm light continues to flash. The display
continues to show A0. I can check the battery voltage and power usage
but the display returns to A0 after a couple of seconds. The unit has
a serial port but I do not use it. Three years ago I took the unit out
of service when the batteries failed. I just found a couple of new 12v
batteries and powered up the unit with the resulting conditions.
When I disconnect the 60hz mains the unit goes into battery operation
as it should and supplies 120vac.
Anyone have any ideas and the list of possible fault codes ?
Thank you.
Richard