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Breaker trips

Breaker trips frequently — Electrical overload or fault

Mitsubishi Electric · MSZ-AP Air Conditioners

What does Breaker trips mean?

The electrical circuit breaker dedicated to the air conditioner repeatedly trips, cutting power to the unit. This suggests an electrical issue or an overload condition.

Common Causes

  • Electrical overload on the circuit
  • Short circuit within the air conditioner
  • Internal component failure (e.g., compressor, fan motor)
  • Incorrect breaker capacity for the unit's requirements

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Stop using the air conditioner.

  2. 2

    Reset the circuit breaker once.

  3. 3

    If it trips again immediately or frequently, turn off the air conditioner at the breaker.

  4. 4

    Ensure an exclusive circuit is provided for the air conditioner's power supply and that the breaker capacity is correct.

  5. 5

    Consult your dealer or a qualified electrician to investigate the electrical system or the unit.

Browse all codes in this manual (87)
Verified technical data. Last updated: April 2026

Related Faults

3 Min Restart DelayUnit cannot be operated for about 3 minutes after restart - Microprocessor protection3 Short Beeps3 short beeps from indoor unit - Weekly timer setting failedAP Mode activatedNET and MODE LEDs flashing (every 5 seconds) - Access Point Mode activated
Source: Mitsubishi Electric MSZ-AP Air Conditioners
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