Liebert GXT3-10000T220 Fault Indicators, Fault indicators, Fault Cause Corrective steps

Operation

4.2.4Fault Indicators

If a fault occurs, the UPS automatically switches to BYPASS mode, ONLY in case of a battery disconnect fault will the original operating mode be maintained. The fault message alternates with UPS mode once a second, the red Fault LED illuminates on the control panel and the buzzer sounds continuously. If a fault occurs, proceed as follows:

Buzzer alarm operation—The buzzer alarm can be switched On or Off.

Clear fault—Present fault condition can be reset if fault condition is cleared, either automatically or by the operator/technician.

Fault information—A maximum of 4 fault events may be displayed in this window. All fault displays include: the nature of the fault event, and the time it occurred; the time is relative to the UPS operating time.

Display faults—The various possible fault indicators are listed in the following table.

Table 6 Fault indicators

Fault	Cause	Corrective steps
1.	DC BUS fault	Call customer service
2.	Inverter fault	Call customer service
3.	Overtemperature	Reduce load
4.	Batt over volt.	Call customer service
5.	Batt. mode overload	Reduce load
6.	Output overload	Reduce load
7.	Output short	Call customer service
8.	Fan lock fault	Call customer service
9.	Batt. Disconnect	Check battery connector
10.	Charger failure	Call customer service
11.	ESD activated	NA
12.	Parallel fault	Call customer service
13.	Internal fault	Call customer service
14.	Output failure	Call customer service

17