socomec ITYS - Display and Alarm Indicator Faults; Component and Environmental Faults

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ENGLISH
ITYS 1-10 kVA - Ref.: IOMITYTWXX05-GB 00
If the UPS system does not operate correctly use the table below to try and resolve the problem.
Problem Possible cause Remedy
No indication, no warning tone even though
system is connected to mains power supply
No input voltage Check building wiring socket outlet and
input cable.
Displays battery modes, and alarm
sounds every 4 seconds
Mains power supply has failed, or input
power and/or frequency are outside tole-
rance limits
Switching to battery mode automatically.
Check input power source.
Backup time shorter than nominal value Batteries not fully charged / batteries
defect
Charge the batteries for at least 5 - 8
hours and then check capacity. If the
problem still persists, consult your dealer.
Fan failure Fan abnormal Check if the fan is running
Battery over voltage Battery is over charged
Switch to battery mode automatically,
and after the battery voltage is normal
and the mains is normal, the UPS should
switch to line mode automatically again.
Battery low Battery voltage is low When alarm sounds every second bat-
tery is almost empty.
Charge failure The charge is broken Notify dealer.
DC-DC temperature high Internal UPS temperature too high Check UPS ventilation of the UPS, check
the ambient temperature.
Inverter temperature high Inside temperature of the UPS is too high Check the ventilation, check ambient
temperature.
Ambient temperature high The ambient temperature is too high Check room ventilation.
Line voltage high (OVCD action) Input power voltage is too high Switch to battery mode automatically,
after the mains is normal the UPS should
switch to line mode automatically again.
Battery open Battery pack is not connected correctly Do the battery test to confi rm.
Check the battery bank is connected to the UPS.
Check the battery breaker is turned on.
Overload Overload Check the loads and remove some non-
critical loads.
Check whether some loads have failed.
Site failure 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 UPS internal fault Notify dealer
Inverter fault UPS internal fault Notify dealer
Over temperature fault Over temperature Check UPS ventilation, check 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 have short circuited. 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
10. TROUBLESHOOTING