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Indoor Red LED 2 flashes

Indoor Red LED Flashes Twice — No mains power at outdoor unit

Mitsubishi Heavy Industries · Air Conditioners

What does Indoor Red LED 2 flashes mean?

The indoor unit's red LED flashes twice, signaling that there is no mains power reaching the outdoor unit. This could be due to the power being off or a power failure.

Common Causes

  • No mains power at outdoor unit
  • Outdoor unit power off or power failure

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Check the circuit breaker supplying power to the outdoor unit and ensure it is in the ON position.

  2. 2

    Verify that there is no general power outage affecting your property.

  3. 3

    Ensure all external power connections to the outdoor unit are secure and undamaged.

  4. 4

    If power is confirmed, contact a qualified technician to check the outdoor unit's power supply circuit.

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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