Display shows C3 and cooker will not start or stops shortly after starting.

Safety first: Unplug the cooker before inspecting the lid or hinge area.

• Check lid type: Some Instant models have a removable lid with an integrated temperature sensor. Ensure the lid is the correct one for the model and is properly seated.
• Inspect lid connector: On models with a detachable power/communication plug for the lid (e.g., some Duo Crisp or Pro models), check that the connector is fully inserted and free of moisture or food residue. Clean gently with a dry cloth.
• Examine hinge wiring: If the lid is hinged and not fully removable, look at the hinge area for visible damage to the sensor cable. Do not pull on the cable; just visually inspect for cuts or pinches.
• Internal inspection (advanced): If you are experienced and the unit is out of warranty, remove the top cover to access the lid sensor wiring. Verify that the lid thermistor is firmly attached and that its connector on the main control board is secure.
• Replace faulty parts: If the lid sensor is open or physically damaged, replace the lid temperature sensor assembly or the entire lid assembly depending on model design.