PowerWalker VFI 1000T LCD - Manual (Page 33)

30
of UPS system are
reversed system.
EPO active
EPO function is
enabled Turn off the EPO switch.
Bus fault
UPS internal fault Notify dealer
Inverter fault
UPS internal fault Notify dealer
Over temperature
fault
Over temperature Check the ventilation of the
UPS, check the ambient
temperature and ventilation.
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 “L” model
6. Other information for complete description of the problem