P4 error code - Inverter compressor drive error

Modified on Thu, 03 Nov 2022 at 09:47 AM

A P4 error code is caused by an error in the compressor drive. This error code is could be caused by a faulty outdoor board, a faulty outdoor fan motor 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.

P0/P4 Error Code PDF

IPM Continuity Check PDF

E3/F5 Error Code PDF

Compressor Checking PDF

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