Heatsink Overheat

What does oH mean?

The temperature of the drive's heatsink has exceeded the pre-alarm level, typically set between 90-100 °C by parameter L8-02. This condition can be caused by high ambient temperatures, a malfunctioning internal cooling fan, or restricted airflow around the drive, leading to inadequate heat dissipation and potential damage to internal power components if ignored.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Ensure proper installation spacing around the drive and check for any dust or foreign materials clogging the cooling fan or restricting airflow; clear any debris.