24

Keypad Loss (Cannot Write to LCD, Adv. Code 2)

Vacon · X4 AC Drive

What does 24 mean?

This fault indicates an issue with the keypad or its connection where the drive is unable to write data to the keypad's LCD display. This prevents the display of status, parameters, or fault information to the user, effectively rendering the local interface unusable for monitoring or configuration.

Complete Troubleshooting Guide

  1. 1

    Check the physical connection between the keypad and the drive, ensuring it is secure and undamaged. A loose connection can interrupt data transmission.

  2. 2

    Inspect the keypad's LCD for any signs of physical damage, cracks, or liquid ingress that could cause display malfunction.

  3. 3

    Try reseating the keypad connection multiple times, or gently cleaning the contacts.

  4. 4

    If possible, try testing with a known good keypad to isolate whether the issue is with the keypad unit itself or the drive's communication interface.