FANUC Alarm PNT1-654 — Lower output did not lower flow
Manufacturer wording — %sLower output did not lower flow
The manual prints placeholders; your controller fills them in with the real group, axis or number.
FANUC PNT1-654 (“Lower 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: Perform the following:
Updated 2026-09-17 · 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 insufficient exhaust, no quick exhaust on the pilot air line, too large of a hysteresis in control equipment, or the system response is too slow for the current setting of the Calibration step delay parameter.
Remedy
Perform the following:
Related codes
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