Dryer shows E15 and will not start; sometimes appears after the door has been slammed or the unit has been moved.

Safety first: Unplug the dryer before removing the front panel or door lock assembly.

Step-by-step checks:

• Inspect door alignment: Check that the door sits evenly in the frame and that the hinge screws are tight. Adjust if the door sags and does not engage the lock fully.
• Check the door catch and strike: Look for worn plastic on the door catch or cabinet strike. Replace if rounded or cracked.
• Access the door lock: Remove the front panel screws and gently pull the panel forward to access the door lock assembly. Ensure the connector is fully seated.
• Test the lock: With the lock removed, test continuity across the lock contacts while manually actuating the mechanism. Replace if readings are inconsistent.

When to call a technician: If the lock and wiring are good, the control board input may be faulty.