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POWER lamp 3-time flash

POWER lamp flashes 3 times — Indoor fan motor rotational frequency signal missing

Mitsubishi Electric · MSZ-FH Air Conditioners

What does POWER lamp 3-time flash mean?

The indoor fan motor turns OFF. This indicates that the rotational frequency feedback signal is not being emitted during the indoor fan operation, suggesting a problem with the motor or its control.

Common Causes

  • Indoor fan motor malfunction.
  • Issue with the rotational frequency feedback signal.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Turn OFF the main power supply to the air conditioner for a few minutes.

  2. 2

    Check for any physical obstructions that might be preventing the indoor fan from rotating freely.

  3. 3

    Turn the power supply back ON and attempt to operate the unit.

  4. 4

    If the error persists, contact a qualified service technician to inspect the indoor fan motor.

  5. 5

    Refer to manual section 10-6 ('Check of indoor fan motor') for specific diagnostic steps for technicians.

Browse all codes in this manual (41)
Verified technical data. Last updated: April 2026

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Source: Mitsubishi Electric MSZ-FH Air Conditioners
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