Sugar is the one thing that can ruin an induction top for good, and owners of the NIT8669UC should know it. This 800 Series 36 inch induction cooktop (37 inch black ceramic glass, Home Connect, zone combination) is now discontinued and shown as unavailable on Bosch’s US page.
When sugar boils over onto a hot zone, it fuses with the ceramic glass. If it hardens there, scraping it away can pull flakes out of the surface. The one approach that works is dealing with it right away, while the glass is warm, with a proper ceramic scraper.
Gray marks from metal utensils can look like scratches but often are not, and restricted airflow underneath can cause thermal shutdowns. On a visit we examine the glass carefully to separate real damage from marks that will clean off, then check the airflow.
Immediately, while the glass is still warm. Switch the zone off, then use a ceramic scraper with an oven mitt. If sugar cools in place it can take surface with it.
Often not. Metal utensils can leave marks that look like scratches, and a cooktop cleaner may lift them. Real scratches are different, and we can tell which you have.
No. The surface itself has been damaged, and it cannot be polished back. If it spreads or cracks, the glass top would need replacing, and we quote that in writing.
Book in about a minute, or call the desk. Same-day windows inside the Loop on most days, next-day across the rest of Houston.