Cause: Fan has reached the maximum operating hours comes when the maximum operating time of at least one fan will soon be reached, or has already been exceeded.

a30042 sinamics indicates fan has reached the maximum operating hours. This means the heat sink fan will reach the maximum operating time in 500 hours.

Follow these steps to correct a30042 sinamics:

• Replace the Fan(s): Identify the correct replacement fan or fan assembly for your specific SINAMICS drive model.
• Reset the Operating Hour Counter: After replacing the fan, you must reset the operating hour counter(s). This will automatically clear the A30042 warning.
• Reset the operating hours counter (p0251, p0254).

The maximum operating time of the heat sink fan in the power unit is displayed in p0252. The maximum operating time of the internal device fan in the power unit is internally specified and is fixed.