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Weak airflow - Quiet fan speed

Airflow is weak or stops — Fan speed set to Quiet

Fujitsu · Air Conditioners

What does Weak airflow - Quiet fan speed mean?

When the fan speed is set to 'Quiet' mode, the unit operates at a lower fan speed, resulting in weaker airflow compared to other settings.

Common Causes

  • Fan speed is intentionally set to 'Quiet' mode, prioritizing reduced noise over maximum airflow.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the current fan speed setting on your remote controller.

  2. 2

    Change the fan speed setting to a higher level (e.g., Auto or a specific high speed).

  3. 3

    Refer to page 5 of the manual for instructions on how to change fan speed settings.

Browse all codes in this manual (118)
Verified technical data. Last updated: April 2026

Related Faults

11Error 11 — Serial communication error (Indoor unit not sending signal)12Error 12 — Wired Remote Controller Communication Error18Error 18 — External communication error
Source: Fujitsu Air Conditioners
Open Manual (Page 14)Search more codes in this manual