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oH1 fault code in yaskawa R1000 drive

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Cause : Heatsink Overheat comes when the ambient temperature is high and the heatsink temperature of the drive is more than the oH1 detection level.

  1. Measure the ambient temperature. 
  2. Increase the airflow in the control panel. 
  3. Install a cooling device (cooling fan or air conditioner) to lower the ambient temperature.
  4. Remove objects near the drive that are producing too much heat.
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