Ingeniería de Servicio67PROBLEM POSSIBLE CAUSES WHAT TO DOSurface units will notmaintain a rolling boil orcooking is not fastenoughImproper cookware beingused.Use pans which are flat and match thediameter of the surface unit selected.In some areas, the power(voltage) may be low.Cover pan with a lid until desired heat isobtained.Surface units do not workproperlyA fuse in your home maybe blown or the circuitbreaker tripped.Replace the fuse or reset the circuitbreaker.Cooktop controlsimproperly set.Check to see the correct control is setfor the surface unit you are using.Surface unit stopsglowing when turned to alower settingThis is normal. The unit is still on and hot.Scratches (may appearas cracks) on cooktopglass surfaceIncorrect cleaningmethods being used.Scratches are not removable. Tinyscratches will become less visible intime as a result of cleaning.Cookware with roughbottoms being used orcoarse particles (salt orsand) were between thecookware and the surfaceof the cooktop.To avoid scratches, use therecommended cleaning procedures.Make sure bottoms of cookware areclean before use, and use cookwarewith smooth bottoms.Cookware has been slid across the cooktop surface.Areas of discoloration onthe cooktopFood spillovers notcleaned before next use.See the Cleaning the glass cooktopsection.Failures and solutions