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Troubleshooting 31
Troubleshooting
LED and audible alarm troubleshooting
Condition Power On
LED
(green)
On Battery
LED
(yellow)
Overload
LED
(red)
General
Alarm LED
(red)
Audible alarm Can alarm
be silenced
("Silencing
an audible
alarm" on
page
20
)?
UPS operating from
utility
On Off Off Off No audible alarm N/A
Buck mode (high
input voltage)
On Off Off Off No audible alarm N/A
Boost mode (low
input voltage)
On
Off
Off
Off
No audible alarm
N/A
Over temperature
condition
On On Off Flashing On—Continuous No
Battery test failure
Off On Off Flashing On—Continuous Yes
Fan failure
On Off Off Flashing On—Continuous No
Output short circuit
On On On Flashing On—Continuous No
Power up failure from
a DC start—Low
battery (no utility
power)
Flashing Flashing Flashing Flashing On—3 beeps/10
seconds
No
Low battery (no utility
power)
Off On Off Off On—2 second
beep
No
Online—UPS power
capacity exceeded
On Off On Off On—1 second
beep
No
Overload timeout
Off Off On Flashing On—Continuous No
On battery—Input
voltage is out of
range
On On Off Off On—2 second
beep
Yes
On battery—No
utility power
Off On Off Off On— 4 second
beep
Yes
On battery—Battery
voltage condition
Flashing Off Off Flashing On—Continuous Yes
On
battery—Overload
condition
Off
On
On
Off
On—1 second
beep
No
On battery—Output
voltage is out of
range
Off Flashing Off Flashing On—Continuous No
On battery—Output
wave is abnormal
Flashing Flashing Off Flashing On—Continuous No