Cause : Heatsink Overheat comes when the temperature of the heatsink exceeded the overheat pre-alarm level. Cooling Fin/Cooling Fin Fan Overheat The temperature of the Drive cooling fin exceeded the temperature programmed in parameter L8-02.

Cooling fan(s) are not working, high ambient temperature, a heating unit in close proximity to Drive is present.

1. Surrounding temperature is too high.

• Check the surrounding temperature.
• Improve the air circulation within the enclosure panel.
• Install a fan or air conditioner to cool surrounding area.
• Remove anything near drive that may cause extra heat.

2. Internal cooling fan has stopped.

• Check for dirt build-up on the fans and cooling fan.

3. Airflow around the drive is restricted.

• Provide proper installation space around the drive as indicated in the manual.
• Allow for the proper space and ensure that there is sufficient circulation around the control panel.
• Check for dust or other foreign materials clogging the cooling fan.
• Clear debris caught in the fan that restricts air circulation.