E6 is displayed and the cooker will not heat or complete programs.

Safety first: Unplug the multicooker. Internal electrical testing should only be done if you are comfortable working with appliances and have a multimeter.

• Check for obvious damage: Remove the inner pot and inspect the heating plate for burn marks, cracks, or deformation.
• Access the base: Turn the unit upside down and remove the bottom cover. Look for a thermal fuse attached to the heating plate or wiring harness; check for signs of overheating.
• Test continuity of the heating element: With a multimeter, measure resistance across the heating element terminals. An open circuit indicates a failed element that must be replaced.
• Inspect wiring and connectors: Ensure all spade connectors to the element and thermal fuse are tight and not oxidized. Reseat any loose connectors.
• If element and fuse are good: The fault may be on the control board (triac/relay). Board-level repair is advanced; replacing the control board is usually the practical solution.