Cause : Overtemperature heat sink AC inverter comes when the temperature of the power unit heat sink has exceeded the permissible limit value due to insufficient cooling, fan failure, overload, ambient temperature too high, pulse frequency too high.

siemens fault 30004 indicates an overtemperature condition. This means the temperature of the inverter's heat sink has exceeded the permissible limit.

Troubleshooting Steps:

Follow these steps to correct siemens fault 30004:

• Ensure the cooling fan on the inverter is operational and running at the correct speed.
• Inspect the fan for any obstructions, damage, or dust buildup that might hinder its performance.
• Clean or replace the fan if necessary.
• Verify that the surrounding temperature is within the operating limits.
• Ensure the connected motor and application are not drawing excessive current or power beyond the inverter's rating.