Cause : Excess temperature comes when power unit module temperature is excessive due to high ambient temperature, block airflow or motor overload.

The fault code 4310 in your ABB ACS560 drive indicates an power unit module temperature is excessive. This fault signifies that the power unit module temperature is exceeding its safe operating limit.

1. Check ambient conditions.
2. Check air flow and fan operation.
3. Check heatsink fins for dust pick-up.
4. Check motor power against drive power.