What the symptom can mean
Drying can activate components that are not running in the same way during washing. A stage-specific sound narrows the enquiry but does not identify a fan or motor without inspection.
Place the first sound
Note whether it began as the drying indicator appeared, during tumbling or after a pause. Say whether it followed each rotation or continued steadily. Include any warning or change in drying performance.
Compare with washing
Tell us whether wash movement and spin sounded normal on the same occasion. Keeping those stages separate helps describe a drying-side noise that could otherwise be lost in a general complaint about the whole machine.