Washer powers on but will not start any program; Start button beeps or flashes but cycle does not begin.

Safety first: Do not force the door closed; this can damage the hinge and lock.

Step-by-step checks:

• Confirm door closure: Close the door firmly until you hear a positive click. Check for obstructions around the seal.
• Check child lock: Refer to the CDA user manual for the child lock key combination (often holding two buttons). Disable the lock and try again.
• Test door lock: If the lock indicator does not illuminate and the door does not audibly lock when Start is pressed, suspect a faulty door interlock and replace it.
• Reset program: Turn the selector to Off, wait 10 seconds, then choose a simple program (e.g. rinse) and press Start.