P0 error code - IPM malfunction or IGBT over-strong current protection

A P0 error code is caused when an abnormal voltage signal is sent to the compressor. This can be caused by a faulty outdoor board, outdoor fan or a compressor malfunction.

For a more detailed diagnostics, you can review the attached PDF - P0_P4 error code on how to  pinpoint the issue. Please refer to the other attachments for the specific tests mentioned in the error code procedure.