2. Troubleshooting
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2
Troubleshooting
This chapter explains how to troubleshoot when the protective functions, fault trips, warning signals,
or a fault occurs while operating the inverter. If the inverter does not work as expected after
following the suggested troubleshooting steps, please contact the LSIS Customer Service Center.
2.1 Trips and Warnings
The Inverter will stop operating or send out a warning signal when it detected a fault. The keypad
will show brief information of the trip and warning signal. If the model is using the LCD keypad, the
LCD will show detailed information.
Up to 5 failures can be saved and can be found in code Pr.90. When there are more than 2 trips,
the keypad display will show in the order of priority. The LCD will show in the order the fault
occurred. Failure history is saved by either resetting the Inverter or when the inverter turns off due
to low voltage failure. If the number of failures exceeds 5, the last 5 messages will be deleted
automatically.
The following is how the fault conditions are categorized:
• Level: After the fault is corrected, the trip or warning signal disappears. The fault is not saved
in the fault history.
• Latch: After the fault is corrected, the trip or warning signal disappears once the Inverter is
reset.
• Fatal: After the fault is corrected, the trip or warning signal disappears when conducted the
following procedure. Turn off the Inverter and wait until the charge indicator light goes off. Then,
turn on the Inverter. If the Inverter still failed, please contact the supplier or LSIS Customer
Service Center.
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