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Operation
3.6 Troubleshooting (Continued)
Fault Submenu
LCD Shows
Description
OVERLOAD FAULT
The load draws more power than the UPS can provide. This can cause an automatic UPS shutdown.
Remove excess loads.
SHORT CIRCUIT
The load has a short.
INTL TEMP FAULT
The UPS’s internal temperature is too high and could cause an automatic shutdown. Verify the UPS’s fan
is not blocked and that it is working.
Also see
Fan Fail Alarm.
OUTPUT OVER VOLTAGE
The output voltage is above or below the UPS’s specifications.
OUTPUT VOLTAGE LOW
BATTERY FAIL
The batteries have failed the self test. Inspect them to make sure they are properly connected and that
they are in good condition. Make sure they are fully charged.
BACKFEED
A relay inside the UPS has failed. It cannot be fixed in the field. Contact Alpha Technologies.
Figure 3.6.1
Alarm and Fault Submenus (Continued)