Haas Alarm Code 446 - Lube System #147

Haas CNC Minor Lubrication

Model: Haas CNC | Code: 446

Applicable Systems
Haas CNC Mill (VF/VM Series)

Symptoms

The Haas CNC control displays a lubrication system warning. The automatic lube system needs attention.

Possible Causes

  • Lube reservoir empty
  • Lube pump failure
  • Lube pressure switch fault
  • Lube line blockage
  • Lube timer setting incorrect
  • Control software needs update

Troubleshooting Steps

  1. Step 1: Record the Haas alarm code 446 and note the machine operating state
    Alarm code and context are documented
  2. Step 2: Check the Haas operator manual alarm reference for code details
    Alarm description and recommended actions identified
  3. Step 3: Inspect the Lubrication subsystem for visible faults or damage
    No visible damage or abnormal conditions found
  4. Step 4: Check relevant parameters and settings per Haas service documentation
    Values match expected settings or discrepancies identified
  5. Step 5: Reset the alarm per Haas procedure and test machine operation
    Alarm clears and machine operates normally, or alarm returns

How to Reset

To reset Haas alarm 446: 1) Resolve the underlying fault per the troubleshooting steps. 2) Press the RESET key on the Haas control panel. 3) If the alarm persists, press EMERGENCY STOP, release it, then press RESET. 4) If still present, power cycle the machine. 5) Contact Haas service if the alarm persists after reboot.

Frequently Asked Questions

  • Q: What does Haas alarm 446 mean?

    Alarm 446 indicates: Lube System #147. This is a Haas CNC control alarm related to Lubrication.

  • Q: How do I clear Haas alarm 446?

    Fix the root cause, press RESET. If persistent, cycle E-STOP and RESET. If still present, power cycle the machine. Contact Haas service if it returns.

  • Q: Is Haas alarm 446 critical?

    Severity: Minor. Monitor and service at next opportunity.

Related Haas Fault Codes

Source: Haas CNC Alarm List / Haas Service Manual

Category: CNC