Multicooker heats but never reaches a boil; rice remains undercooked or hard even after full cycle.

Safety first: Unplug and cool the unit before internal inspection.

• Test with water: Add the recommended amount of water and start a basic cook program. Observe if the water reaches a vigorous boil within the expected time.
• Check power source: Avoid long extension cords or shared power strips that can cause voltage drop. Use a dedicated wall outlet.
• Inspect heater wiring (advanced): With the bottom cover removed (unplugged), check for discolored or loose heater terminals. Tighten screws and clean mild oxidation if present.
• Measure heater resistance: Use a multimeter to compare heater resistance to service specs. A significantly higher resistance indicates a failing element that should be replaced.