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VSD44 Fault in Nirvana IR Compressor
Get VSD fault 39 or 40 during starting Ingersoll Rand 75KW Nirvana oil free air compressor in Operator panel.

Get VSD fault 39 or 40 during starting Ingersoll rand 75KW Nirvana oil free air compressor. Power module test shows VSD 44-4 error in service configuration menu 348. IGBT module found to be good. Unit passes Control/Interface test in service configuration menu 348. What are the likely causes for the issue?