B400R 1-3kVA User Manual
38
Overload
Alarm Code: 41/42/43
Overload
Check current load, indicated
on the LCD remove non-critical
equipment until load is within
UPS operating parameters.
Site Fail
Alarm Code: 04
Phase and neutral conductor
connections on the UPS are
reversed
EPO Active
Alarm Code: 71
EPO function is enabled
Turn off the EPO switch
Bus fault (low / high /
unbalanced / soft start)
Alarm Code: 22/21/23/25
UPS Internal fault
Please contact your distributor
or Borri for assistance
Inverter fault (low / high / soft
start)
Alarm Code: 33/32/34
UPS Internal fault
Please contact your distributor
or Borri for assistance
Over temperature fault
Alarm Code: 81
UPS System overheating
Check ventilation to UPS is not
blocked, check the ambient
temperature, and adjust room
ventilation where possible.
NTC open
Alarm Code: 87
UPS Internal fault
Please contact your distributor
or Borri for assistance
Inverter Short
Alarm Code: 31
UPS Output short circuit
Remove all protected
equipment and turn off the
UPS. Check whether the UPS
outputs or load are short
circuit. Make sure fault has
cleared and that no internal
faults are present before
switching the UPS back on.
Bus short
Alarm Code: 24
UPS Internal fault
Please contact your distributor
or Borri for assistance
Please have the following information to hand before calling the After-Sales Service Department:
1) Model number, serial number
2) Date on which the problem occurred
3) LCD display information, Buzzer alarm status
4) Mains power condition, load type and capacity, environment temperature, ventilation condition
5) Information of external battery pack if the UPS is “S” model
6) Other information that may assist in the description of the problem