U10 is displayed and cooking does not start or is interrupted.

Safety first: Do not force the lid closed under pressure. Unplug the cooker and ensure it is depressurized.

• Check lock position: On pressure models, ensure the lid is rotated fully to the LOCK mark. You should feel a firm stop.
• Clean lock area: Food residue around the locking lugs or lock pin can prevent full engagement. Clean thoroughly with a damp cloth and dry.
• Inspect lock mechanism: With the unit unplugged, open the lid and observe the lid lock pin and associated parts. Check for cracks, wear, or stiffness. Lubricate lightly with food-safe silicone if sticking.
• Check lock switch: Access the top housing and locate the lid lock microswitch or Hall sensor. Ensure the actuator or magnet aligns correctly when the lid is locked. Adjust mounting screws if misaligned.
• Replace parts: If the lock pin is broken or the switch does not click or register, replace the lid lock assembly or lid lock switch.