Miele Dryer Error Code F55

• Dryer stops mid-cycle and displays F55 error code
• Dryer refuses to start or respond to control inputs
• Drum may not rotate even though power appears to be on
• Display screen may show garbled or frozen information
• Dryer runs briefly then shuts down automatically
• No beep or response when buttons are pressed
• Control panel lights flicker or behave erratically

• Faulty electronic control board or main PCB (printed circuit board)
• Loose or corroded electrical connections inside the dryer cabinet
• Water damage to control board from moisture infiltration
• Failed thermal fuse or associated wiring
• Malfunctioning door latch switch preventing proper circuit completion
• Power supply voltage fluctuations from home electrical system
• Defective relay or contactor on the control board
• Software glitch or corrupted control board memory
• Failed door strike or misaligned door preventing proper contact
• Damaged wire harness connections between control board and dryer components

• Check your home's circuit breaker panel and verify the 240V circuit serving the dryer is not tripped; reset if necessary
• Unplug the dryer or turn off the circuit breaker, wait 60 seconds, then restore power to perform a complete system reset
• Open the dryer door fully and inspect the door latch to ensure it clicks firmly when closed and the strike is properly aligned
• Remove and clean the lint filter completely; ensure the filter housing is free of lint buildup and debris
• Inspect the external dryer vent opening on your home's exterior wall; remove any visible blockage, lint, or bird nesting material
• Check that the flexible or rigid dryer vent duct is not kinked, crushed, or excessively long (should not exceed 25 feet)
• Ensure you are not overloading the dryer; try running a smaller load to see if the error persists
• Verify all visible external connections at the back of the dryer are hand-tight and not loose
• If the error clears after reset and reappears, note how many cycles pass before recurrence and contact Miele service
• Do not attempt to disassemble the dryer or access internal control boards; this requires professional service in the USA