Air is what the NIT5060UC needs most. Beneath its glass sits a fan that looks after the power electronics, and whatever happens to that airflow decides how the cooktop behaves as it gets older. Bosch lists it in the 500 Series for a 30 inch opening, with the same 31 inch glass as the NIT5063UC but no Wi-Fi.
Cabinets that box the underside in are the usual villain: a drawer stuffed with dish cloths, a shelf mounted too close, or insulation packed around the cavity. In time the cooktop responds by cutting power or closing a zone to guard itself. To an owner it feels like a cooktop that starts well and then fades.
Heavy cooking makes it more noticeable. Dragging pans, instead of lifting them, also marks the glass. At a visit we begin with the cavity below, then we run the zones at high power and watch for throttling.
It may be protecting its electronics from heat. Make sure nothing crowds the space underneath. If it still happens after clearing it, the fan and airflow need an inspection.
It can make light marks look better, but true scratches in ceramic glass cannot be polished away. Lifting pans rather than sliding them keeps new ones from forming.
Anything that crowds or blocks the space. Follow the clearances in the installation instructions, since packed drawers starve the fan of air. If marks are deep enough to catch a fingernail, tell us and we will look at the glass.
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.