FANUC Alarm MHND-259 — PAUSE … vacuum is not off
Manufacturer wording — PAUSE %s vacuum is not off
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC MHND-259 (“PAUSE … vacuum is not off”): The vacuum switch is still detecting vacuum. First check: Check if all the clamps have completely closed.
Updated 2026-09-17 · LogrobotLM reference
Description
The vacuum switch is still detecting vacuum.
Remedy
Check if all the clamps have completely closed.
Related codes
Indicative field information — the robot manufacturer's manual and safety procedures always prevail. Never bypass a safety device; apply lockout/tagout (LOTO) before any physical intervention. How this reference is built →