Heatsink Over-temperature

What does F8 mean?

The drive's heatsink temperature has exceeded its safe operating limit, indicating insufficient cooling. This can be caused by obstructions, high ambient temperatures, or a malfunctioning cooling fan. This is an Auto-Reset/Run type fault configurable with parameters A092 and A093.

• Obstructed airflow to the drive heatsink due to dust, debris, or improper cabinet ventilation, preventing heat dissipation.
• Failure of the drive's internal cooling fan or external cabinet cooling fan, leading to inadequate forced air cooling.
• High ambient temperature in the control cabinet or operating environment exceeding the drive's specified maximum limit.
• Excessive loading of the drive, causing it to generate more heat than the cooling system can dissipate (e.g., running above continuous current rating).
• Damaged thermal sensor on the heatsink providing an inaccurate temperature reading to the drive.

Click steps to track your progress.

1. 1

   Inspect the drive's heatsink fins for accumulation of dust, lint, or debris and clean thoroughly using compressed air or a vacuum.

2. 2

   Verify the operation of the drive's internal cooling fan by checking for airflow or visual rotation during operation.

3. 3

   Measure the ambient temperature inside the control cabinet near the drive using a thermometer and ensure it is within the drive's specified operating range.

4. 4

   Check the cabinet's ventilation system (e.g., filters, intake/exhaust fans) for proper operation, cleanliness, and clear airflow paths.

5. 5

   Confirm the motor load is not consistently exceeding the drive's continuous current rating by monitoring output current during typical operation.