Fan fault

What does FN mean?

This alarm indicates a problem with the inverter's cooling fan. It appears on the operation panel when the cooling fan stops due to an alarm condition or operates differently from the settings configured in Pr. 244 (Cooling fan operation selection). Insufficient cooling can lead to inverter overheating and potential damage to internal components.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Verify the setting of Pr. 244 (Cooling fan operation selection) to ensure it aligns with the desired fan operation mode.

2. 4

   If the fan is physically damaged or not operating despite correct settings, contact your sales representative for further assistance or replacement.