Safety: Disconnect power at the breaker before accessing the underside of the cooktop.

Ventilation check: Ensure cabinets and panels around the cooktop allow airflow. Remove any items blocking vents under or behind the unit.
Access fan: Remove the cooktop from the counter if necessary and take off the bottom cover to expose the cooling fan(s).
Inspect fan: Check that the fan blades spin freely by hand and are not obstructed by wiring or debris. Clean dust buildup.
Electrical test: With power restored briefly and extreme caution, start a zone and observe whether the fan runs. If it does not, turn power off again and test the fan motor for continuity. Replace the fan if open or seized.
Check wiring: Verify the fan connector is firmly seated on the control board and that wires are intact.
Control board: If the fan is good and wiring is intact but E8 persists, the fan driver circuit on the control board may be faulty and require board replacement.

Ilve induction cooktop displays E8 and beeps, zones shut off

Possible Causes