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ENGLISH
ITYS
10-20 kVA - Ref.: IOMITYTWXX0C-GB 00
10. TROUBLESHOOTING
Alert code
Problem
Possible cause
Solution
Warning 86 Heatsink Over Temperature Internal UPS temperature of
UPS too high
Check the ventilation of the UPS and ambient
temperature.
Warning 92 Model Pin Error
UPS internal fault
Consult dealer.
Fault
93 Backfeeder
UPS internal fault
Don’t touch any terminal of equipment which
connects utility power with the UPS even if you
cut off the utility power. Please consult dealer.
Fault
E1 Negative Power Fault
The load is pure inductive and
capacitive
Remove some non-critical loads.
Bypass supplies the load
fi
rst, ensure there is no
overload, then turn on UPS.
Other
-
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.
Other
-
BYPASS LED lights up even
though the power supply is
available
Inverter not switched on
Press On-Switch 'I' to turn on UPS.
Other
-
BATTERY LED lights up,
and alarm sounds every 4
seconds
Input voltage and/or
frequency are out of tolerance
Check input power source.
Check the building wiring and input cable.
Check if the input breaker is closed.
Other
-
Emergency supply period
shorter than nominal value
Batteries not fully charged /
battery defect
Charge the batteries for at least 12 hours and
then check capacity.
Summary of Contents for ITYS 10 kVA
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