E8 is displayed and the cooker stops; often associated with unstable or low mains voltage.

Safety first: Unplug the cooker before inspecting any internal electrical parts.

• Check mains supply: Test another high-power appliance on the same outlet to see if it operates normally. If multiple devices show issues, contact an electrician to check your supply.
• Avoid extension cords: Plug the multicooker directly into a wall outlet. Thin or long extension cords can cause voltage drop.
• Inspect power cord: Check the Hisense power cord for cuts, kinks, or burn marks. Replace if damaged.
• Internal terminal check (advanced): Remove the bottom cover and inspect the mains terminal block and wiring for looseness or discoloration. Tighten screws gently if loose.
• Power board inspection: Examine the low-voltage power supply section on the main PCB (transformer or SMPS). Look for burnt components or bulging capacitors. Replace the PCB if damaged.
• Use a surge protector: In areas with unstable power, use a quality surge protector or voltage stabilizer rated for the cooker’s wattage.