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4.2.4 Fault 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