So I created new PETG proliles and enabled the Support air Filtration in the printer nozzle config then in the filament config under cooling I enabled Active Carbon Fitration with a fan speed of 70%. Problem is the exhast fan runs at 100% regardless. Is this by design as I am using the Engineering plate or is the slicer not behaving as it should and not pushing this gcode through to the printer?
I should add the fan does run continuously at the specified 70% after the print has finished
Thanks for your assistance