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FANUC Alarm PNT1-623 — %sLower output did not lower flow

FANUC PNT1-623 (“%sLower output did not lower flow”): As the AccuAir calibration steps down through the 10 points in the calibration table, it expects a lower flow for each decrease in the command flow value. First check: Check and perform the following:

Updated 2026-08-29 · LogrobotLM reference

Description

As the AccuAir calibration steps down through the 10 points in the calibration table, it expects a lower flow for each decrease in the command flow value. In this case the flow did not decrease. This can be caused by:

Remedy · Remède

Check and perform the following:

Frequently asked · Questions fréquentes

What does FANUC alarm PNT1-623 mean?
FANUC PNT1-623 (“%sLower output did not lower flow”): As the AccuAir calibration steps down through the 10 points in the calibration table, it expects a lower flow for each decrease in the command flow value. In this case the flow did not decrease. This can be caused by:
How do you troubleshoot FANUC alarm PNT1-623?
Check and perform the following:

Related codes / Codes liés

PNT1-621%sCal. time out at low flowPNT1-622%s0 air flow rate detectedPNT1-624%sTime out during a cal. testPNT1-625%sMin. output has flow > setpoint

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. · Informations indicatives issues du terrain — le manuel du constructeur et ses procédures de sécurité font foi. Ne shuntez jamais un organe de sécurité ; consignez (LOTO) avant toute intervention physique. How this reference is built →