CPU A/D Converter Fault

What does CPF5 mean?

A CPF5 fault indicates a critical internal issue with the drive's CPU Analog-to-Digital (A/D) converter. This is a hardware malfunction within the drive's control board, meaning the drive cannot accurately measure and process internal signals. If this fault occurs, the drive is unable to function correctly and requires internal repair or replacement.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   If the fault persists after a reset, the drive likely requires professional repair or replacement of the control board.

2. 4

   Document the fault code and any contextual information, then contact the drive manufacturer's technical support.