Fin overheat

What does E.FIN mean?

This function stops the inverter output if the cooling fin overheats, causing the internal overheat sensor to actuate. This indicates that the inverter's heat dissipation is compromised, potentially due to environmental factors or cooling system issues.

• Indoor unit's heat exchanger temperature has exceeded a critical limit (P1-31).
• Restricted airflow over the indoor unit's fin coil.
• Blocked air filter or dirty evaporator coil.
• Over-refrigeration or insufficient airflow preventing heat absorption.

Click steps to track your progress.

1. 1

   Measure the ambient temperature around the inverter and ensure it is within specified limits.

2. 2

   Inspect the cooling fins for any clogging by dust, dirt, or debris.

3. 3

   Verify that the cooling fan is operating correctly and not obstructed.