E41 - Inverter power transistor overheated

What does E41 mean?

This error signifies that the power transistor for the inverter in the outdoor unit has overheated, indicating a potential issue with the inverter circuit or cooling.

• Insufficient cooling for the inverter components.
• Dirty heat sinks or blocked airflow around inverter.
• Overload on the inverter.
• Faulty power transistor module.

Click steps to track your progress.

1. 1

   Turn off the main power to the outdoor unit at the circuit breaker and allow it to cool down for at least 30 minutes.

2. 2

   Ensure that the outdoor unit has adequate ventilation and clear any obstructions around the inverter compartment.

3. 3

   A qualified technician should inspect the inverter power transistor and its cooling system.

4. 4

   If the problem persists, the inverter module may require professional repair or replacement.