PowerWalker Battery Pack for VFI 1000RT LCD - Manual (Page 35)

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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