AC Drive Heatsink Overtemperature Fault

What does 14 mean?

The temperature of the power unit's heatsink has exceeded its permissible limit, triggering a fault. This can be due to insufficient cooling air flow, accumulation of dust on the heatsink, high ambient temperature, excessive switching frequency, or a malfunctioning cooling fan. Prolonged operation at high temperatures significantly reduces the lifespan of power electronic components.

Additional Steps

Steps 1–2 are listed in Priority Fix.

1. 3

   Inspect the cooling fan for proper operation and any obstructions.

2. 4

   Review the drive's parameter settings, especially the switching frequency, to ensure it is appropriate for the current ambient temperature and motor load.