Heat pump dryer shows E11; unit may run but not heat effectively.

Safety first: Unplug the dryer. Heat pump components can be sharp and may contain high-pressure refrigerant; do not open sealed system.

• Clean evaporator and condenser: Open the lower front flap and remove any accessible filters. Gently vacuum the evaporator fins and surrounding area to remove lint. Do not bend fins.
• Check fan operation: Start a cycle and listen for the internal fan. If the fan does not run or is noisy, the fan motor may be failing.
• Ensure adequate ventilation: Make sure the dryer is installed with sufficient clearance around it and that room temperature is within the specified range for Montpellier heat pump models.
• Professional service: If E11 persists after cleaning and ensuring airflow, the compressor or refrigerant charge may be at fault. Only a qualified refrigeration technician should service the sealed system.