Multicooker stops heating and displays E2 during preheat or cooking.

Safety first: Disconnect power and allow the cooker to cool fully.

• Dry and clean: Remove the inner pot and wipe the heating plate and center sensor area. If liquid has spilled inside, leave the lid open and let the unit dry for 24 hours in a warm, dry place.
• Inspect sensor leads: Open the bottom cover and locate the NTC sensor wires from the plate to the PCB. Check for melted insulation, bare wires touching each other, or contact with the metal chassis. Separate and insulate with high-temperature heat-shrink tubing if needed.
• Measure resistance: Disconnect the sensor from the board and measure resistance with a multimeter. A reading close to 0 Ω indicates a shorted sensor; it must be replaced.
• Replace faulty sensor: Install a new Redmond-compatible bottom NTC sensor or heating plate assembly. Route wires away from sharp edges and heating elements.

If E2 persists after drying and inspection, the sensor or control board may require professional replacement.