Induction hob zone does not respond correctly and shows E021 on the display.

Safety: Internal temperature sensors are connected to high‑voltage circuitry. Do not access internal components unless qualified.

• Power cycle: Turn off the hob at the mains for 10 minutes, then restore power and test the affected zone. Transient sensor errors can sometimes clear.
• Check if error is zone‑specific: Try all zones. If E021 appears only on one zone, that zone’s coil sensor is likely faulty.
• User‑serviceable actions are limited: There is no external sensor to clean or reset. If the error persists, internal diagnosis is required.
• Technician steps (for reference): A technician will remove the hob, access the induction coil assembly, test the NTC sensor resistance, inspect the wiring harness, and replace the coil assembly or repair the harness as needed.