Dryer runs but clothes remain damp or take a very long time to dry.

Safety first: Switch off and unplug the dryer before internal cleaning.

• Clean all lint filters: Remove the main lint filter and any additional Siemens fine filters. Wash with warm water, dry thoroughly, and reinstall.
• Clean condenser: On condenser and heat pump models, open the condenser flap, remove the condenser, and rinse it from the back with warm water until clear. Let it drain before refitting.
• Check exhaust duct (vented models): Detach the hose and clear lint build-up. Inspect the wall vent and external flap for obstructions.
• Ensure proper loading: Avoid overloading the drum; leave space for air circulation. Mix heavy and light fabrics for more even drying.
• Room conditions: Ensure the room is not extremely cold or poorly ventilated, as this reduces condenser efficiency.