OPTI-UPS DS120KC33 - Manual (Page 49)

8-2 Simple troubleshooting for Inverter
Error message
displayed
Error description Troubleshooting
Output over-voltage (1)Ol-3320 detects circuit error Replace Ol-3320
(2)Ol-3300 feedbacks circuit error Replace Ol-3300
(3)Ol-3300 program parameter is too high
Correct Program
Parameter
(4)Ol-3300controlerror Replace Ol-3300
Output under-voltage (1)Ol-3320 detects circuit error Replace Ol-3320
(2)Ol-3300 feedbacks circuit error Replace Ol-3300
(3)Ol-3300program parameter is too low
Correct Program
Parameter
(4)Ol-3300controlerror Replace Ol-3300
Output over-current (1)Load exceeds 100% above
Unload Load To Under
100%
(2)Ol-3316 detects circuit error Replace Ol-3316
(3)Ol-3300 program parameter is too high
Correct Program
Parameter
Inverter input
over-current
There isn’t a function like this for now
Temperature on the
Inverter is too high
(1)Temperature of heat sink sheet on
inverter side is too high
Unload Load To Below
100%
(2)Temperature switch line is open
Recover Temperature
Switch Line
(3)Error on receiving ol-3312 signal Replace Ol-3312
(4)Error on receiving ol-3300 signal Replace Ol-3300
VCE Fault (1)IGBT component short circuit
Replace IGBT
Component
(2)Output is short circuit Eliminate Short Circuit
(3)Error on IGBT signal line connection
method
Recover IGBT Signal
Line Connection Method
(4)Ol-3312 control error Replace Ol-3312
(5)Ol-3300 control error Replace Ol-3300