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E16 / Indoor Red LED 1 flash

Error E16 / Indoor Red LED Flashes once — Faulty indoor fan motor

Mitsubishi Heavy Industries · Air Conditioners

What does E16 / Indoor Red LED 1 flash mean?

Error E16, indicated by a single flash of the indoor unit's red LED, means there is a faulty indoor fan motor. This prevents proper airflow and system operation.

Common Causes

  • Faulty indoor fan motor

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn off the air conditioner's main power supply.

  2. 2

    Carefully check for any obstructions around the indoor fan blades.

  3. 3

    Listen for any unusual sounds like grinding or rattling from the indoor unit when operating.

  4. 4

    This error often necessitates the replacement of the indoor fan motor.

  5. 5

    Contact a professional technician for diagnosis and repair.

Browse all codes in this manual (110)
Verified technical data. Last updated: April 2026

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Source: Mitsubishi Heavy Industries Air Conditioners
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