Induction cooktop shows E8 and may shut down; often associated with incorrect supply frequency or internal timing error.

Safety first: Turn off the cooktop and isolate it from the mains before any internal work.

• Step 1 – Check household power stability: If lights flicker or other appliances malfunction, contact your power provider or an electrician to check supply quality.
• Step 2 – Avoid shared high‑load circuits: Ensure the cooktop is on a dedicated circuit and not sharing with large motors or welders that can distort frequency.
• Step 3 – Power reset: Switch off the breaker for 10 minutes, then restore power and test.
• Step 4 – Internal inspection (technician): Inspect the control board for damaged timing components (crystal oscillator, resonator) and burnt areas. Check the low‑voltage power supply section for swollen capacitors.
• Step 5 – Replace control board: If E8 persists and mains quality is confirmed good, replace the main control board, as timing faults are rarely repairable in the field.

Persistent E8 errors require professional diagnosis with appropriate test equipment.