Miele Dryer Error Code F20

• Dryer will not heat or produces insufficient warmth during drying cycles
• Drum rotates but clothes remain damp after a complete cycle
• Error code F20 displays on the control panel
• Dryer may stop mid-cycle or fail to start
• Unusual burning smell near the dryer vents
• Longer than normal drying times before error appears

• Failed heating element due to thermal stress or manufacturing defect
• Defective thermal sensor or temperature thermostat preventing proper heat regulation
• Broken or disconnected heating element wiring harness
• Malfunctioning control board not sending proper voltage to heating element
• Lint or debris accumulation affecting thermal sensor readings
• 240V power supply issue specific to USA electrical installations
• Failed bi-metal thermostat unable to maintain proper temperature settings

• Verify your home circuit breaker for the dryer is in the ON position; reset the breaker by switching OFF for 30 seconds then back ON
• Locate and clean the lint filter thoroughly, removing all accumulated lint before each use
• Check the external dryer vent hood for blockages, bird nests, or lint buildup; clear any obstructions
• Inspect the dryer vent hose connection at the back of the unit to ensure it is securely attached
• Remove excessive loads from the dryer; avoid overfilling as this can trigger sensor errors
• Confirm the dryer door closes completely and latches securely; listen for a clear click when closing
• Perform a full reset by switching off the home circuit breaker for 60 seconds, then switch back ON and attempt a test cycle
• Verify all external power connections are tight and the 240V outlet has proper voltage (use caution if checking with a multimeter)