257

Internal fault (Power EEPROM data defective or too old)

Danfoss · VLT HVAC Drive High Power

What does 257 mean?

The power EEPROM data is defective or too old. This indicates a corruption or obsolescence of the non-volatile memory storing power section parameters.

Complete Troubleshooting Guide

  1. 1

    Contact the Danfoss supplier or Danfoss Service.

Source: Danfoss Manual