18
ITYS
10-20 kVA - Ref.: IOMITYTWXX0C-GB 00
If the UPS system does not operate correctly use the table below to try and solve the problem.
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, alarm buzzer 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.
Alert code
Problem
Possible cause
Solution
Warning 11 Battery Disconnected
Battery pack is not connected
correctly
Do the battery test to confirm.
Check the battery bank is connected to the UPS.
Check the battery breaker is turned on.
Warning 12 Battery low
Battery voltage is low
When alarm sounds every second battery is
almost empty.
Warning 14 Over Charge
Battery is over charged
The UPS will turn off the charger until the battery
voltage is normal
Warning 15 Charger Failure
Charging fails
Consult dealer
Fault
21 Bus Over Voltage
UPS internal fault
Consult dealer.
Fault
22 Bus Under Voltage
UPS internal fault
Consult dealer.
Fault
23 Bus Unbalance
UPS internal fault
Consult dealer.
Fault
24 Bus short
UPS internal fault
Consult dealer.
Fault
25 Bus Softstart Fail
UPS internal fault
Consult dealer.
Fault
31 Output Short Circuit
Output short circuit
Remove all the loads. Turn off the UPS.
Check if UPS output and loads have short-
circuited.
Ensure short circuit is removed before turning on
again.
Fault
32 Inv Over Voltage
UPS internal fault
Consult dealer.
Fault
33 Inv Under Voltage
UPS internal fault
Consult dealer.
Fault
34 Inv Softstart Fail
UPS internal fault
Consult dealer.
Warning 41 Output Overload
Overload
Check the loads and remove some non-critical
loads.
Check if some loads have failed.
Fault
42 Inv Overload Fault
Overload
Check the loads and remove some non-critical
loads.
Check if some loads have failed.
Fault
43 Byp Overload Fault
Overload
Check the loads and remove some non-critical
loads.
Check if some loads have failed.
Warning 71 Epo Active
EPO connector is open
Check the EPO connector status
Warning 72 On Maintain Bypass
Maintain bypass switch is
open
Check the maintain bypass switch status
Fault
81 Heatsink Over Temperature
Fault
Internal UPS temperature too
high
Make sure the UPS is not overloaded; the air vents
are not blocked and the ambient temperature is
not too high. Wait for 10 minutes for the UPS to
cool down before turning on again. If fails, please
contact the distributor or service centre.
Warning 84 Fan Failure
Fan abnormal
Check the fan is running normally.
9. TROUBLESHOOTING
Summary of Contents for ITYS 10 kVA
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