F30004 fault in Siemens V70 Drive

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F30004 fault in Siemens V70 Drive indicates Drive heat sink overtemperature. This means the power module's heat sink is dangerously hot, usually due to a failed cooling fan, poor ventilation, or continuous overload. Cause: The temperature of the power unit heat sink has exceeded the permissible limit value.
  • Insufficient cooling, fan failure.
  • Overload.
  • Ambient temperature too high.
  • Pulse frequency too high.

Remedy:
  • Check whether the fan is running.
  • Check the fan elements.
  • Check whether the ambient temperature is in the permissible range.
  • Check the motor load.
  • Reduce the pulse frequency if this is higher than the rated pulse frequency.

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