Tag: atc

All the articles with the tag "atc".

• Haas Alarm 121 — ATC Arm Fault

  22 Apr, 2026

  Haas Alarm 121 means the automatic tool changer arm failed to complete its motion correctly. Learn the causes and how to fix Haas Alarm 121.

• Haas Alarm 122 — ATC Chain Fault

  22 Apr, 2026

  Haas Alarm 122 means the automatic tool changer chain or carousel failed to index correctly. Learn the causes and how to fix Haas Alarm 122.