
UPS Operation
22
Linear Plus Series UPS User Instruction Manual
Warning and Fault
Indicators
If a warning indication appears, the UPS continues to operate. The warning message alternates with UPS
mode once a second. The various warnings indicators and their corrective steps are listed in Table 9 below.
Fault indicators
If a fault occurs, the UPS automatically switches to BYPASS operating 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:
Table 9. Warning indicators
Warning
Cause
Corrective Steps
1.
Batt under volt.
Call Technical Support
2.
Utility failure
Restore utility power
3.
L1 failure
Check input circuit breaker/fuse
4.
Over temp. 65
Check/clear fans and/or reduce ambient temperature
Table 10. Fault Windows
Action
Window
Details
Buzzer alarm
33
The buzzer alarm can be switched ON or OFF.
Clear fault
32
Present fault condition can be reset if fault condition is cleared, either
automatically or by the operator/technician.
Get fault information
6
A maximum of 4 fault events may be displayed in this window.See table 11
below for code details.
All fault displays include:
•the nature of the fault event
•time it occurred; the time is relative to the UPS operating time.
Table 11. Fault Codes
Fault
Cause
Corrective steps
1.
DC BUS fault
Call technical support
2.
Inverter fault
Call technical support
3.
Over temperature
Reduce temperature
4.
Batt over volt.
Call technical support
5.
Batt. mode overload
Reduce load
6.
Output overload
Reduce load
7.
Output short
Call technical support
8.
Fan lock fault
Call technical support
9.
Batt. Disconnect
Check battery connector
10.
Charger failure
Call technical support
11.
RPO activated
Correct problem, restart UPS
12.
Parallel fault
Call technical support
13.
Internal fault
Call technical support
14.
Output failure
Call technical support