Hi,

There are few steps you need to take. First turn it off and remove plates, put in kitchen sink and spray some Windex and dry with paper towels, now clean the bottom of the three plates too. Next you need to reinstall the plates look down inside you will see three thin lines of metal, make sure there is no lint or dust on them, reinstall and let set for five minutes to allow that Windex that might still be wet. Now turn on low for a couple of minute then go to medium. It would resolve the issue.

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