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POWER lamp 6-time flash

POWER lamp flashes 6 times — Outdoor thermistors are faulty

Mitsubishi Electric · MSZ-FH Air Conditioners

What does POWER lamp 6-time flash mean?

The indoor fan motor turns OFF. This indicates that one or more outdoor thermistors have a short or open circuit during compressor operation, affecting temperature readings.

Common Causes

  • Outdoor thermistors are short-circuited or open-circuited.

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

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

  3. 3

    Ensure no debris, ice, or other obstructions are impacting the outdoor unit or its sensors.

  4. 4

    If the error persists, contact a qualified service technician to inspect and test the outdoor thermistors.

  5. 5

    Refer to the outdoor unit service manual for specific diagnostic steps.

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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