38.256-258

Internal Fault: Power EEPROM data error

Danfoss · VLT HVAC-FC 102 Frequency Converter

What does 38.256-258 mean?

The Electrically Erasable Programmable Read-Only Memory (EEPROM) on the power card, which stores crucial operational data, is either corrupted or obsolete. This hardware fault on the power card prevents the drive from properly initializing or operating.

Complete Troubleshooting Guide

  1. 1

    Replace the power card in the frequency converter.

  2. 2

    Ensure the replacement power card is compatible with the drive's control card firmware version.

Source: Danfoss Manual