Schneider Telemequanic is installed, but 'Siemens' is selected in the system configuration.

In the system configuration, change the setting to 'Schneider' or 'Schneider ATV312', depending on what is actually installed.

Fan wheel is very dirty / difficult to move and this makes it unbalanced

• Clean the fan wheel with suitable cleaning agents and remove any dirt.
• If the error still appears, contact the responsible service partner (make a note of the message on the display)