Haas Alarm: 399 INVALID U CODE – Haas Lathe

Haas Alarm 399 INVALID U CODE – Haas Lathe

Alarm Description

In the context that the U code was used it had an invalid value. Was it positive?

This information is for reference only. Haas is a registered trademark and the original is the property of Haas Automation, Inc.

Help the CNC Community: How Did You Fix It?

If you have encountered this Haas Alarm 399 INVALID U CODE – Haas Lathe error code before or know a proven troubleshooting step to resolve it, please share your solution in the comments below.

Leave a Reply

Your email address will not be published. Required fields are marked *