P1
Midea High or Low Voltage Protection (Indoor or Outdoor)

Unit shows P1; may shut down during operation, especially in cooling

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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

Supply voltage outside allowable range, Loose neutral or ground connection, Undersized wiring causing voltage drop, Faulty voltage detection circuit on PCB

How to Fix / Troubleshooting

Safety first: Electrical measurements should only be done if you are trained and have proper tools.

Steps to check:

  • 1. Check for other electrical issues: Flickering lights or tripping breakers in the home may indicate a supply problem. Contact an electrician if present.
  • 2. Avoid heavy loads: Do not run large appliances (ovens, dryers) on the same circuit as the air conditioner.
  • 3. Inspect wiring: With power OFF, check that the supply cable to the outdoor unit is the correct gauge and that terminals are tight.

When to call a technician: If house voltage is normal but P1 persists, the PCB voltage sensing circuit may be faulty and should be replaced by a technician.

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Repair Difficulty

Hard 4/5

Required Part

Outdoor Main PCB
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