E4 - Inverter compressor motor or overheat (Outdoor Unit)

What does E4 mean?

This error suggests the compressor motor in the outdoor unit is overheating or experiencing an electrical issue.

• Overheating compressor
• Blocked airflow to the outdoor unit
• Compressor motor fault
• Low refrigerant level

Click steps to track your progress.

1. 1

   Turn off the power to the outdoor unit.

2. 2

   Ensure the unit's air vents are completely clear of debris.

3. 3

   Wait for the unit to cool down.

4. 4

   Restore power and check if the error code is gone.

5. 5

   If the problem continues, a technician is needed.