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5.15.4 Line-4 System Messages
Line-4 messages reflect the UPS operating conditions. Warning messages will be
displayed when an abnormal operating condition occurs. The following chart shows
the allowable Line-4 messages.
Line-4 Messages
Displayed Message Translation
PHEI
Displayed when Input Phase rotation has been wired
in a counter-clockwise rotation.
I/O NOT SYNCHRONIZE
Displayed when input and output frequencies are not
synchronized. (Abnormal)
* AUTOTRANSFER *
Displayed when Auto-transfer to Bypass is active (i.e.
current limit reached). (Abnormal)
* LOW BATTERY *
Displayed when battery voltage is low (abnormal) or
the UPS batteries have failed self-diagnostic test.
(Abnormal)
* UPS OL: REDUCE LOAD *
Displayed when UPS has tripped due to an overload
condition. (Abnormal)
* DCOC *
Displayed when the UPS has an internal failure.
(Abnormal)
* DCOV *
Displayed when the UPS has an internal DC bus
over-voltage. (Abnormal)
* DCUB *
Displayed when the UPS has an internal DC bus
unbalance referenced to Neutral. (Abnormal)
* OL *
Displayed when UPS has tripped due to an overload
condition. (Abnormal)
* FUSE *
Displayed when an internal transistor fuse opens.
* INOV *
Displayed when inverter output over-voltage has
occurred. (Abnormal)
* INUV *
Displayed when inverter output under-voltage has
occurred. (Abnormal)
* BATT. OH *OR MCCB-B OPEN
Displayed when the optional battery over-temp
sensor has activated, or if the external battery
disconnect is open. (Verify TB3-5, 6)
* MM/DD/YY (DAY) HH:MM *
Displayed when none of the above abnormal
conditions are present. (Normal)
* TRANSFER INHIBITED *
Displayed when key switch position is changed and
frequency is not synchronized. (Abnormal)
* ENTER FOR DETAILS *
Displayed when a Fault or Faults have occurred.
(Abnormal)
Note:
1) Line-4 will be blank when the BATT key is pressed during Battery Backup Mode with
normal battery voltage.
2) The # symbol signifies numerical values or other information supplied by the UPS.