31
EN
Battery low
Battery voltage is low
When audible alarm sounding every
second, battery is almost empty.
Charge fail
The charge is broken
Notify dealer.
Inverter temperature
high
Inside temperature of the
UPS is too high
Check the ventilation of the UPS,
check the ambient temperature.
Ambient temperature
high
The ambient temperature
is too high
Check the environment ventilation.
Battery open
Battery pack is not
connected correctly
Check the battery bank is connected
to the UPS.
Check the battery breaker is turn on.
Battery fault
Battery may need to be
replaced
Notify dealer
Overload
Overload
Check the loads and remove some
non-critical loads.
Check whether some loads are failed.
Site fail
Phase and neutral
conductor at input of UPS
system are reversed
Rotate mains power socket by 180°
or connect UPS system.
EPO active
EPO function is enabled
Turn off the EPO switch.
Bus fault(Low/high/
Unbalance/soft start)
UPS internal fault
Notify dealer
Inverter
fault(Low/high/soft
start)
UPS internal fault
Notify dealer
Over temperature fault
Over temperature
Check the ventilation of the UPS,
check the ambient temperature and
ventilation.
NTC open
UPS internal fault
Notify dealer
Inverter short
Output short circuit
Remove all the loads. Turn off the
UPS. Check whether the output of
UPS and loads is short circuit. Make
sure the short circuit is removed, and
the UPS has no internal faults before
turning on again.
Bus short
UPS internal fault
Notify dealer
Please have the following information at hand before calling the After-Sales
Service Department:
1. Model number, serial number
2. Date on which the problem occurred
3. LCD display status, Buzzer alarm status
4. Utility power condition, load type and capacity, environment temperature,
ventilation condition
5. The information (battery capacity, quantity) of external battery pack if the UPS
is “S” model
6. Other information for complete description of the problem
