Product review (2 stars): CHECK your Heating Elements!
WARRANTY: Frigidaire covers products bought on Amazon. However, it seems to be a lengthy process to have your product fixed.

MY CASE: I had to return my first induction cooktop because I noticed some of the burners weren't working as they should have. After returning this defective item (I did not want to go through the warranty claim process), I am experiencing the same issue after buying a new one and returning the first item.

TEST IT: The best way to test each heating element is to use an induction pot on each burner (do test separately) and check how long it takes to boil water (typical time is ~2 min). Remember, induction cooktops are more powerful than professional gas stoves. If it does not boil, there is a problem. IN THE FIRST ONE: 3 HEATING ELEMENTS DID NOT WORK. IN THE SECOND ONE: THE LOWER RIGHT HEATING ELEMENT IS NOT WORKING.

This situation and the quality of the product are both rather disappointing. Not sure if this was the right decision, but I decided to go through the warranty repair process. More later...

UPDATE (Dec/20): After 2 visits from the tech personnel, they changed an electronic board controlling the heating element. Visible improvements were obtained.