HAAS® Alarm 149 — SPINDLE MUST BE STOPPED
Part of: our HAAS® alarm reference · covering 60 of the most common alarms.
What it means
You tried to do something (open the door, change a tool, run a setup move) while the spindle was still rotating.
Common causes
- Door opened during cycle
- M-code sequence missing an M5
- Doorlock fault giving false 'open' signal
What to check first
- Wait for the spindle to fully stop and reset
- Check the door interlock isn't loose
Prevention
Most overtravel alarms are programming or setup issues, not machine faults. Build a habit of always confirming your tool length offsets and active work offset before pressing cycle start — especially after a tool change or a fixture swap. On 5-axis machines, simulate moves before running them; trunnion clearances are easy to misjudge.
If you’re still stuck
If you’ve worked through the checks above and the alarm hasn’t cleared — or if it cleared and came back — that’s the point to call. Persistent alarms after a reset usually mean a real component fault, and pushing through them risks turning a simple repair into a bigger one. Keith covers HAAS® breakdowns across the UK with same-day phone diagnosis.
A note on this guide. Alarm wording and numbering can vary by HAAS® machine model and software revision. The descriptions here are written in plain English to help you understand what the machine is reporting and what to check first — they’re not a substitute for the official HAAS® operator manual or for a qualified service engineer’s diagnosis. Always confirm the exact alarm message on your screen and consult your machine’s documentation before attempting any repair.