E8 error on induction cooktop, often with beeping and immediate shutoff.

Safety: Only qualified persons should measure live voltages. Turn off power before tightening any connections.

• Check supply voltage: Using a multimeter, verify that the cooktop is receiving the rated voltage (typically 220–240 V AC). If voltage is outside the specified range, contact an electrician.
• Inspect terminal block: With power off, remove the terminal cover and check that all screws are tight and wires are correctly placed according to the Hisense wiring diagram. Look for signs of overheating or melted insulation.
• Dedicated circuit: Ensure the cooktop is on a dedicated circuit of the correct amperage. Avoid using extension cords or sharing with high-load appliances.
• Internal module fault: If supply voltage and connections are correct but E8 persists, the internal power supply on the induction module may be defective and the module should be replaced.