Washer-dryer combo displays E17 and the door will not lock at the start of a cycle.

Safety first: Unplug the machine before adjusting hinges or replacing the lock.

• Check door alignment: Close the door slowly and observe whether the latch lines up with the lock opening. Adjust the door hinge screws if the door sags.
• Inspect hinge and strike: Tighten loose hinge screws and replace a bent or cracked door strike.
• Clean latch area: Remove detergent residue or lint buildup around the lock opening that may prevent full engagement.
• Test door lock: Access the lock assembly from behind the front panel. Check for broken plastic parts or weak engagement when the door is closed.
• Replace door lock assembly: If the lock does not engage reliably, install a new Costway-compatible door lock and reassemble the front gasket carefully.