User Manual 1-3kVA Rev. 9
- Page 26 of Total 30 -
5. Troubleshooting
LCD & LED Status /
Audible Alarms
Possible Cause
Action
Fault Warning Normal
y
AC utility power is normal but
UPS is overloaded up to
125%.
y
Warning LED does not fade out
and alarm beeps per 0.5
second.
Output Power
125 %
1.
Overload. 1.
Please reduce the load less
than 100%.
Fault Warning Normal
y
UPS in Bypass Mode. Output
power is more than 150%.
y
Warning LED lights up and
alarm beeps continuously.
AC: OK BATT: OK
Bypass Mode
1.
Overload. 1.
Please reduce the load less
than 100%.
Fault Warning Normal
y
UPS in Battery Mode.
y
Alarm beeps every 4 seconds.
AC: Fail BATT: OK
Battery Mode
1.
AC utility power
fail
2.
Input cable
broken or
disconnect with
UPS.
1.
If AC utility power fails,
reduce the load in order to
extend backup time.
2.
If it is not power failure,
please check the rated
input or connected power
line.
Fault Warning Norma
y
UPS in Battery Mode.
y
The alarm beeps per 1 second.
AC: Fail BATT: LOW
Battery Mode
1.
AC utility power
fail.
2.
Battery power is
discharging
deeply.
1.
UPS will shut down
automatically. Please save
data soon.
Fault Warning Norma
y
UPS completely shut down.
1.
AC utility power
fail.
2.
The UPS has
already run out of
battery.
1.
UPS will restart up when
AC utility power is
restored. If AC utility
power failure is more than
6 hours, please charge the
battery for 24 hours to
ensure the battery fully
charged.
