EEF

EEPROM Fault

Schneider Electric · Altivar 312 Variable Frequency Drive

What does EEF mean?

An internal memory fault has been detected within the drive's EEPROM. The EEPROM stores critical parameters and settings for the drive's operation. This fault suggests potential data corruption or a hardware issue with the memory chip. Unresolved, this can lead to loss of settings, unpredictable behavior, or drive failure.

Complete Troubleshooting Guide

  1. 1

    Check the operating environment for excessive electromagnetic compatibility (EMC) disturbances that could affect internal electronics.

  2. 2

    Perform a power cycle (turn off and on) the drive to see if the fault clears.

  3. 3

    If the fault persists, replacing the drive is usually necessary due to an internal hardware failure.

Source: Schneider Electric Manual