ITYS 6-10 kVA - 551431A - SOCOMEC
42
EN
FAULT
PROBLEM DISPLAYED
POSSIBLE CAUSE
REMEDY
Inverter overload
Overload
Check the loads and remove some
noncritical loads.
Check if some loads have failed.
Bypass overload
Overload
Check the loads and remove some
noncritical loads.
Check if some loads have failed.
Out. short circuit
Abnormally low impedance placed
on its output and considers it a short
circuit
Remove all the loads. Turn off the
UPS.
Check if the UPS outputs L and N
are short circuited, or if the loads
are faulted (in short circuit).
Ensure short circuit is removed
before turning on again.
UPS temp. fault
Inside temperature of UPS is too high
Check the ventilation of UPS and
the ambient temperature.
DC bus + or - too high
UPS internal fault, the + or -DC BUS
voltage is too high
Consult dealer.
DC bus + or - too low
UPS internal fault, the + or -DC BUS
voltage is too low
Consult dealer.
DC bus unbalanced
UPS internal fault, the voltage
difference between DC Bus+ and DC
bus- is too large
Consult dealer.
DC bus short circ.
UPS internal fault
Consult dealer.
Max inverter volt
UPS internal fault, the inverter voltage
is too high
Consult dealer.
Min inverter volt
UPS internal fault, the inverter voltage
is too low
Consult dealer.
OTHER CASES
PROBLEM DISPLAYED
POSSIBLE CAUSE
REMEDY
No indication, no warning
tone even though system is
connected to mains power
supply
No input voltage
Check the building wiring and input
cable.
Check if the input breaker is closed.
Yellow LED bar even though
the power supply is available Inverter not switched on
Press On-Switch to turn on UPS.
Emergency supply period
shorter than nominal value
Batteries are not fully charged /
batteries defect
Charge the batteries for at least 12
hours and then check capacity.
