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Outdoor unit emits water

Outdoor unit emits water (Heating mode) — Automatic defrosting operation

Fujitsu · Air Conditioners

What does Outdoor unit emits water mean?

In heating mode, the outdoor unit may emit water. This is a normal occurrence resulting from the automatic defrosting operation, where melted frost drains away from the unit.

Common Causes

  • Automatic defrosting operation is melting frost buildup on the outdoor unit, causing water to drain.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    This is a normal operational characteristic during heating periods and not a malfunction.

  2. 2

    Ensure that the drainage area around the outdoor unit is clear and can handle the water.

  3. 3

    No specific action is required from the user.

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