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error Mitsubishi

Error Code E3

Indoor temperature sensor error — the indoor unit cannot accurately read room temperature.

? What Causes This

Faulty temperature sensor, loose sensor wiring, or sensor connector issue.

✓ How to Fix It

  1. Power off the unit.
  2. Locate the indoor temperature sensor.
  3. Check the sensor wiring for loose connections.
  4. Ensure the sensor is not blocked or dirty.
  5. Clean the sensor gently with a soft cloth.
  6. Restart the unit.
  7. If error persists, replace the sensor.

This error code appears in:

Mitsubishi Mini Split Air Conditioning System