Troubleshooting
This chapter explains how to troubleshoot problems when the inverter protective functions are
activated (faults and warnings). If the inverter does not work normally after following the suggested
troubleshooting steps, please contact the Benshaw customer service center.
Trip and Warning
When the inverter detects a fault, it stops operating (trips) and displays a fault message at
parameter nOn in the Operations Group and/or sends out a warning signal. When a fault or
warning occurs, the keypad displays the information briefly. The fault/warning message can be
viewed at parameter Pr.90. When more than two trips occur at the same time, the keypad display
shows the higher priority fault code. The fault history can be viewed at parameters Pr.91 ~ Pr.95
The fault history can be cleared by setting parameter Pr.96 to (1) Yes.
The fault conditions are categorized as follows:
• Level: When the fault is corrected, the fault or warning signal disappears and the fault is not saved in the
fault history.
• Latch: When the fault is corrected and a reset is performed (keypad or external), the fault or warning
signal disappears. The fault is saved in the Fault History.
• Fatal: When the fault is corrected, the fault or warning signal disappears only after the inverter power is
cycled. When powered off, wait until the charge indicator light goes off then turn the inverter on again. If
the inverter is still in a faulted condition after powering it on again, please contact the supplier or the
customer service center.
Faults
Protection Functions related to Output Current and Input Voltage
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