My contractor installed my stovetop and failed to leave me the manual. It's been 45 minutes of fruitless, circular online searching and still no manual in English can be found so I don't know how to use the more advanced functions or troubleshoot the product. Frigidaire  wants me to register the product - using the serial. number, which cannot be seen on the product itself once it has been installed. Using it, every time I turn a burner on to cook, the stovetop makes a hideous, high-pitched noise that is painful to my nervous system. There was no warning that the unit would make a noise like this when purchasing it. Contrary to the marketing materials, the stovetop remains hot for some time after use - not a deal breaker, but it makes me wonder what else they aren't telling me. All in all, I'm distressed at the lack of information and the functioning of the stovetop. I will return it.