Multicooker beeps and shows E2, will not heat or start cooking.

Safety first: Unplug the cooker and let it cool completely. Never work on a hot or energized appliance.

• Remove inner pot: Take out the stainless or non-stick inner pot and wipe away any moisture or food from the heating plate and center sensor area.
• Inspect sensor area: In many Tristar multicookers, a small metal button or disc in the center of the heating plate houses the NTC sensor. Check for physical damage, corrosion, or burnt marks.
• Clean contacts: If there is light corrosion or food residue around the sensor, gently clean with a soft cloth slightly dampened with isopropyl alcohol. Allow to dry fully.
• Check for loose movement: Gently press the center sensor button. It should be firmly seated and spring back slightly. If it is loose or sunken, the sensor assembly may be damaged.
• Advanced (for experienced users): Remove the bottom cover (after unplugging) to access the sensor wiring harness. Look for broken wires or a disconnected plug going from the sensor to the main PCB. Reseat any loose connectors.

If the E2 error remains, the NTC sensor assembly or main control PCB must be replaced. This typically requires a technician familiar with Tristar multicookers.