GE Industrial Solutions GPS 4848_100 Users Guide (single rectifier shelf) - Manual (Page 91)

Galaxy Power System 4848/100 with 595 Series Rectifiers S1:3 and later
Issue 10 February 2008 Troubleshooting Millennium Systems 13 - 3
Millennium
Controller Display
The Millennium display is illustrated below.
AC Alarm LED
Table 13-A: AC Alarms
(See Figure 12-6)
Controller
LED
Controller
Alarm
Status
Millennium
Controller Display
Other
Indication(s)
Possible Problem(s) Possible Solution(s)
AC MIN AC Fail ACF on
rectifier
display Rectifier is not
receiving ac power:
•AC input circuit
breaker has
operated.
•AC input voltage is
out of range.
•Internal rectifier
failure
1. Verify that ac circuit
breaker is closed; close
circuit breaker if
operated.
2. If the problem is not
corrected, replace the
rectifier.
AC MIN Engine Transfer
Timeout Engine may
have alarm. Remote engine or
connection to
engine has failed. Call technical support.
AC MIN Phase Alarm PF on
rectifier
display Phase failure:
•Rectifier high
voltage shutdown
•External phase
imbalance or
failure
•Internal rectifier
failure
1. Toggle the ON/STBY
switch into the STBY
position and then back
into the ON position.
2. If the problem is not
corrected, replace the
rectifier.