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F8

Heatsink OvrTmp

Allen-Bradley · PowerFlex 4 Adjustable Frequency

¿Qué significa F8 ?

This fault indicates that the drive's heatsink temperature has exceeded its safe operating limit. Common causes include obstructions to airflow, accumulated dirt on the fins, or an ambient temperature that is too high.

Causas comunes

  • Heatsink temperature has exceeded the safe operating limit.
  • Fan failure on the heatsink.
  • Inadequate airflow or ventilation around the drive.
  • Overload condition causing increased component temperatures (P1-20).

Pasos de reparación & Lista de verificación

Haga clic en los pasos para seguir su progreso.

  1. 1

    Inspect the heatsink fins for any blockages, debris, or excessive dirt and thoroughly clean them to ensure proper airflow.

  2. 2

    Verify the ambient temperature surrounding the drive does not exceed 40°C (104°F) for IP30/NEMA1/UL Type1 installations or 50°C (122°F) for Open type installations.

  3. 3

    Check the operation of the cooling fan (if present) to confirm it is running and effectively dissipating heat.

Ver todos los códigos en este manual (24)
Datos técnicos verificados. Última actualización: March 2026

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Fuente: Allen-Bradley PowerFlex 4 Adjustable Frequency