Some textiles release more fibres during drying, and a combined appliance may need a documented cleaning step before the next load. The appropriate routine depends on its lint-management design.
Understanding this situation
A wash-only habit may not account for the additional fibres produced by drying towels, fleece or other shedding fabrics. Conversely, an instruction from a separate dryer may not match the combined machine.
A useful next step
Use the exact care guide and clean only the parts intended for the owner. Keep the previous load type in mind when new laundry shows fibres. Persistent unusual deposits or a fault need assessment rather than hidden-passage brushing or dismantling.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.