Filament Runout should work without printing from an SD Card.
It maybe you are running older firmware. The "Extruder Heating" was a left over message but it is my belief that is correct in the current firmware.
When you click the encoder wheel, the nozzle will start heating. You don't want your host in the middle of this operation. You have to be at the printer to do the filament change. So, use the Encoder Wheel to get to the next phase of the process.
It maybe you are running older firmware. The "Extruder Heating" was a left over message but it is my belief that is correct in the current firmware.
When you click the encoder wheel, the nozzle will start heating. You don't want your host in the middle of this operation. You have to be at the printer to do the filament change. So, use the Encoder Wheel to get to the next phase of the process.