Haas Alarm: 126 GEAR FAULT

Alarm: 126 GEAR FAULT

Haas Alarm Description:
Gearshifter is out of position when a command is given to start a program or rotate the spindle. This means that the two speed gear box is not in either high or low gear but is somewhere in between. Check the air pressure, the solenoid’s circuit breaker CB4, and the spindle drive. Use the Power Up/Restart button to correct the problem.


  1. Haas Alarms PDF by Haas Automation, Inc.
Haas Alarm: 126 GEAR FAULT