User Manual 1-3kVA Rev. 9
- Page 27 of Total 30 -
5. Troubleshooting
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LED
LED Status /
Audible Alarms
Possible Cause
Action
y
No indication and
buzzer alarm even
though system is
connected to
mains power
supply.
1.
No input voltage
1.
Check building wiring
socket outlet and input
cable.
y
Line LED flash.
1.
Phase and neutral conductor
at input of UPS system are
reversed.
1.
Rotate main power socket
by 180 to connect UPS
system.
y
Line LED flash and
Battery LED
illuminate.
1.
Input voltage/frequency are
out of tolerance
1.
Check input power source.
y
Line and Bypass
LED illuminated
even though the
power supply is
available.
1.
UPS not turn on.
1.
Please turn on the UPS
y
Inverter LED
illuminated.
y
Alarm sounds
every 4 second.
1.
AC utility power fail.
1.
UPS go to battery mode
automatically.
2.
As the audible alarms per
every 1 second, battery is
almost empty.
y
Fault LED
illuminated.
y
Buzzer alarm
sounds per every
1 second.
1.
Overload.
1.
Please reduce the load
less than 100%.
y
Fault LED
illuminated.
y
Buzzer alarm
sounds
continuously.
1.
UPS Fault
1.
Please contact with sale
representative.
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.
y
Fault and Battery
LED illuminated.
y
The alarm sounds
per every 1
second
1.
Charger or Battery may break
down.
1.
Please contact with sale
representative.
