Tosot Overcurrent / Electrical Short

Breaker trips when air conditioner starts or shortly after

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Safety Warning

This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.

If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.

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Possible Causes

Shorted compressor, Shorted fan motor, Damaged power wiring, Incorrect breaker size for Tosot unit

How to Fix / Troubleshooting

Safety first: Do not repeatedly reset a tripping breaker; this is a fire hazard. Turn off power and call a professional if unsure.

  • Inspect wiring: Look for burnt or melted wires at the indoor and outdoor terminals.
  • Check for water intrusion: Ensure no water is leaking onto electrical components.
  • Verify breaker size: Confirm the breaker rating matches the Tosot nameplate requirements.
  • Professional diagnosis: A technician should test compressor and motor windings for shorts and replace faulty components.
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Repair Difficulty

Professional Required 5/5

Required Part

Compressor
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