14
6. TROUBLE SHOOTING GUIDE
No
UPS status description
Solution
1
AC utility power is normal.
UPS is running normally, but
battery capacity is low. Buzzer
beeps once every second for
battery low.
Please check charger board
and battery.
2
AC utility power is normal.
The output load is supplied
through bypass of AC utility.
Fault LED lits up and buzzer
beeps continuously.
Please contact your agent
for service.
3
AC utility power is normal but
UPS is overloaded. Warning
LED lits up and buzzer beeps.
But UPS has not switched to
bypass.
Please reduce the critical
load to <100%.
4
AC utility power is normal but
UPS is overloaded. Warning
LED lits up and buzzer beeps.
And UPS has been switched
to bypass.
Please reduce the critical
load to <70%, the UPS will
return to inverter to supply
power automatically.
5
The AC output comes from
battery, passing through
DC/AC inverter to supply AC
power to load.
Please check the voltage
and frequency of AC utility.