Samsung FTQ307NWGX induction range doesn't sense pots

[Calab]

I have just received a Samsung FTQ307NWGX induction range. The range operates properly, except that none of the stove top burners will detect any pots or pans. When I try I get a "pan not detected" symbol ○ on the controls. I'm testing with a heavy cast iron fry pan. All four burners are doing this.

I was able to check for error codes as follows:
- Clock button
- Clock button
- 1,2,3,4
- Set/Start
- Custom Cook + 0 at the same time

I get an -SE- code... which indicates a shorted key, but all the keys are functioning, so I'm not sure if that is a true fault.

Before I go opening up the stove top to look for issues, is there anything in particular that I should be watching for or testing?

Any help is appreciated!

[scrapiron]

Before you go any further, place a magnet on the bottom of each pan you intend to use. If it sticks, that pan will work.