E1 error on Avanti electric cooktop, one or more heating zones do not respond

Safety first: Disconnect power at the breaker before lifting the glass cooktop or touching internal components.

• Reseat connectors: Remove mounting screws and carefully lift the glass top. Locate the ribbon cables between the touch control and power board. Disconnect and reconnect them firmly.
• Inspect for damage: Look for burnt spots, cracked boards, or broken sensor wires on the affected zone.
• Zone isolation: If the error code indicates a specific zone (refer to your manual), disconnect that zone's sensor or element and see if the error changes. This can help identify a bad sensor or element.
• Replace faulty board or sensor: If reseating cables does not clear E1, replace the touch control board. If diagnostics point to a specific zone sensor, replace the temperature sensor / limiter for that zone.