35
ENGLISH
ITYS
1-10 kVA - Ref.: IOMITYTWXX05-GB 00
20. TROUBLESHOOTING
Please have the following information at hand before calling the After-Sales Service Department:
• Model number, serial number
• Date on which the problem occurred
• LCD display status, Buzzer alarm status
• Utility power condition, load type and capacity, ambient temperature, ventilation conditions
• The information (battery capacity, quantity) of external battery pack if the UPS is an S model
• Other information for a complete description of the problem
IMPORTANT!
If problems persist or recur frequently after following the instructions in this chapter call the technical service
centre providing a full description of the problem.
WARNING
Problem Displayed
Possible cause
Remedy
Read EEPROM Error
UPS internal fault
Consult dealer.
Epo Active
EPO connector is open
Check the EPO connector status
On Maintain Bypass
Maintain bypass switch is open
Check the maintain bypass switch status
IP softstart failed
UPS internal fault
Consult dealer
Site Wiring Fault
Phase and neutral conductor at input of
UPS system are reversed
Reverse mains power wiring.
Battery Disconnect
Battery pack is not connected correctly
Do the battery test to con
fi
rm.
Check the battery bank is connected to the UPS
Check the battery breaker is turned on.
Battery low
Battery voltage is low
When alarm sounds every second bat-
tery is almost empty.
Output Overload
Overload
Check the loads and remove some non-
critical loads.
Check if some loads have failed.
Fan Failure
Fan abnormal
Check if the fan is running normally.
Charger failure
The charge fails
Consult dealer.
Battery Over Voltage
Battery voltage is higher than normal value Check if the battery quantity is right.
Over Charge
Battery is over charged
The UPS will turn off the charger until the
battery voltage is normal
Model Pin Error
Internal UPS fault
Consult dealer.
Ambient Over Temperature
The ambient temperature is too high
Check the environment ventilation.
Heatsink Over Temperature
Inside temperature of UPS is too high
Check the ventilation of UPS and the
ambient temperature.
Ambient NTC abnormal
UPS internal fault
Consult dealer.
Para Bat Differ
The battery packs of some UPSs are dis-
connected
Check if all the battery pack is connected.
Para Line Differ
The mains input of some UPSs is disconnected Check the building wiring and input cable.
Check if the input breaker is closed.
Ensure the UPSs are connected to same
input source.
IP Fuse Open
Input fuse break
Check the input fuse status
