Heatsink temperature > +90 °C

What does it mean?

The heatsink temperature exceeds +90 °C.

Common causes

• Ambient temperature > +40 °C / +50 °C, very dirty heatsink, wrong mounting position, or the current limit is set too low.

How to fix it

• Clean the heatsink, improve the cabinet ventilation, check the ambient temperature, change the mounting position and raise the current limit (C0599).

After troubleshooting: de-energise the device completely (disconnect the 24 V supply and discharge the DC bus) before opening the covers.