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FANUC Alarm PAIN-551 — WARN …Warning, learn item failed

Manufacturer wording — WARN %sWarning, learn item failed
The manual prints placeholders; your controller fills them in with the real group, axis or number.

FANUC PAIN-551 (“WARN …Warning, learn item failed”): While completing operations to measure the equipment delays the equipment did not respond within the expected timeout. First check: Retry the operation by setting the Equipment learn to Redo and calibrate again.

Updated 2026-09-17 · LogrobotLM reference

Description

While completing operations to measure the equipment delays the equipment did not respond within the expected timeout.

Remedy

Retry the operation by setting the Equipment learn to Redo and calibrate again. Check for other AccuAir alarms in the alarm log then follow the remedies for those alarms. If there are no other alarms follow the remedies for the Failed to reach setpoint alarm.

Related codes

PAIN-549WARN …Failed to reach setpointPAIN-550WARN …0 air flow rate timeoutPAIN-552WARN …Dyn. yield > min tolerance bandPAIN-553WARN …Cal. table adapted out, down

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 →