Stand directly in front of the machine and press the door firmly with both hands on the outer plastic frame — never push on the glass. You should hear and feel a solid click as the latch snaps into the catch plate. The door face should sit completely flush with the machine body.

Run your fingers slowly around the entire rubber door seal, pressing gently into the folds. Feel for trapped clothing, coins, hair grips, or any debris. Remove anything you find. Pay particular attention to the lower section of the seal where items collect most.

Open the door and inspect the plastic latch hook on the door edge. It should be intact with no cracks or chips. Then examine the catch plate recess on the machine body — the slot the hook enters. Both parts must be undamaged and correctly aligned.

With the machine unplugged, look closely into the catch plate opening on the machine body. Inside you will see a small electrical switch mechanism. Check it is not obstructed, discoloured, or showing any signs of burning or melting around it.

Open the door fully and look at the hinge points at the top and bottom of the door. Apply gentle upward pressure on the door edge — if it lifts noticeably or feels loose, the hinge is worn. A sagging door misaligns with the catch plate and causes intermittent door fault errors that come and go.

Unplug the machine and press and hold the power button for 5 seconds to discharge residual power stored in the control board. Leave unplugged for a full 60 seconds. Plug back in and try a short programme.