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FANUC Alarm PNT2-664 — Warning, learn item failed

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

FANUC PNT2-664 (“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

PNT2-662Failed to reach setpointPNT2-6630 air flow rate timeoutPNT2-665Dyn. yield > min tolerance bandPNT2-666Cal. table adapted out, down

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