Washer-dryer combo displays E6 and will not start a cycle; door remains unlocked or locked incorrectly

Safety first: Disconnect power before working around the door lock. Do not bypass the door lock for operation.

• Check door closure: Ensure no clothing is trapped between the door seal and glass. Firmly close the door until you hear a positive click.
• Inspect door latch: Examine the metal or plastic door strike on the door and the latch opening on the cabinet. Look for cracks, bending, or misalignment.
• Power reset: Unplug the Roborock combo for 5 minutes, then reconnect and try again. Sometimes the control board needs a reset.
• Access door lock: Remove the front retaining band from the door gasket and peel back the seal to access the Roborock door lock assembly. Check the wiring connector for looseness or corrosion.
• Replace if faulty: If the lock does not engage (no click) when starting a cycle and wiring is intact, replace the Roborock door lock assembly.