EC50 — Outdoor temperature sensor error

What does EC50 mean?

The outdoor temperature sensor is reporting an error. This sensor is vital for the system to adjust its operation based on outside conditions.

• Faulty outdoor temperature sensor
• Loose or damaged wiring connecting the sensor
• Issue with the outdoor unit's main control board

Click steps to track your progress.

1. 1

   Check the wiring and connections of the outdoor temperature sensor.

2. 2

   Ensure the sensor is clean and not obstructed.

3. 3

   Test the sensor's resistance value against the specifications in the manual.

4. 4

   Replace the sensor if it's faulty; otherwise, investigate the control board.