CPF03

EEPROM Fault

Yaskawa · F7 Drive

What does CPF03 mean?

The EEPROM check sum was not valid, indicating data corruption in the non-volatile memory. This can be caused by electrical noise or spikes on the control circuit input terminals, compromising the Drive's configuration data integrity.

Complete Troubleshooting Guide

  1. 1

    Perform factory initialization to restore default EEPROM settings.

  2. 2

    Cycle power to the Drive after initialization.

  3. 3

    Replace the control board if the EEPROM error persists, suggesting a hardware defect.

Source: Yaskawa Manual