47
3
UPS Operation
Alpha Technologies
3.8
Troubleshooting Faults
When the Alarm LED
is on, the unit has a fault, a condition where backup power is unavailable.
When the unit has a fault, and line power is qualified and present at the unit’s input, the loads are
directly connected to the line with no
line conditioning or backup power provided.
The fault submenu displays the unit’s malfunction and is used for troubleshooting.
Procedure
Press
ENTER
to learn the malfunction.
Figure 3.8.3
Fault Table
*These faults are self-resettable. After the fault condition is removed, the unit automatically returns to Line mode if
the line is qualified, or Battery mode if it isn’t. For the other faults, reset the unit by shutting it down and restarting.
FAULT 5M 120/60N
Out Short
LINE
4
Type of fault
(E.g. Short Circuit)
3
LCD is in FAULT
Submenu
Figure 3.8.2
LCD Displays the Fault
Figure 3.8.1
LED Shows a Fault
1
Alarm LED ON
Steady
2
Press
ENTER
Alpha
5M 120/60N
Novus 1800
LINE
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