Washer-dryer has a persistent musty or moldy odor, especially when the door is opened.

Safety first: Unplug the appliance before cleaning internal parts.

Step-by-step cleaning:

• Clean door seal: Wipe the gasket thoroughly with a cloth soaked in a mild bleach solution or dedicated washing machine cleaner. Pull back the folds to remove slime and debris.
• Run maintenance wash: Run an empty 90°C wash with a machine cleaner or white vinegar (check Proline manual for compatibility) to kill bacteria.
• Clean detergent drawer: Remove the drawer and scrub away mold and residue. Clean the housing as well.
• Check drain filter: Clean the pump filter to remove trapped lint and stagnant water.
• Ventilation: Leave the door and detergent drawer slightly open between uses to allow drying.

When to call a technician: If odors persist despite thorough cleaning, there may be hidden stagnant water or drainage issues requiring professional inspection.