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Weak airflow - Heating mode room temp higher

Weak airflow (Heating mode) — Room temperature higher than set temperature

Fujitsu · Air Conditioners

What does Weak airflow - Heating mode room temp higher mean?

In heating mode, if the room temperature is already higher than the set temperature, the outdoor unit stops operating, and the indoor unit fan rotates at a very low speed.

Common Causes

  • The room has reached or exceeded the desired heating temperature, and the unit is maintaining it.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the current room temperature and compare it to the set temperature on the remote controller.

  2. 2

    This indicates the unit is efficiently maintaining the desired temperature and does not need to run at full power.

  3. 3

    Adjust the set temperature higher if more heating is desired.

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