FF82

Choke Overtemperature

ABB · ACS800 Standard Firmware

What does FF82 mean?

The drive output filter (choke) has an excessive temperature. This supervision function is typically used in step-up drives and indicates potential overheating due to restricted airflow, a faulty filter fan, or high ambient temperatures, risking damage to the filter components.

Common Causes

  • Choke (inductor) temperature exceeding safe operating limits.
  • Overload current flowing through the choke.
  • Insufficient cooling or airflow around the choke component.
  • Faulty temperature sensor on the choke.

Repair Steps & Checklist

Click steps to track your progress.

  1. 1

    Stop the drive and allow the unit to cool down completely.

  2. 2

    Measure the ambient temperature around the drive enclosure to ensure it is within specified limits.

  3. 3

    Verify that the filter fan rotates in the correct direction and that air flows freely through the filter and drive vents.

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Verified technical data. Last updated: March 2026

Related Faults

Source: ABB ACS800 Standard Firmware