Please test the IGBT with a pointer multimeter:

Please shift the pointer multimeter to diode gear . Put the red pen on DC-, And use the black pen to measure U .V.W . the value is between 300 and 400.

1. Put the black pen on DC+, Please use the red pen to measure U.V.W . Please tell us the value .

The IGBT get damaged If the 6 values is infinite or 0.