1

System Fault

Vacon · X4 AC Drive

What does 1 mean?

This fault indicates an internal microprocessor problem (sub-codes 0, 1, 2) or an incorrect thermistor profile (sub-code 3). These issues point to a fundamental problem with the drive's internal control system that cannot be resolved through basic troubleshooting. The drive requires specialized attention.

Complete Troubleshooting Guide

  1. 1

    Consult the factory for repair or replacement of the drive.

  2. 2

    Be prepared to provide the drive's serial number and a detailed description of the fault symptoms and conditions.

Source: Vacon Manual