It is possible that the shut-off valve was blocked by the cumulated white stuff. As a result, water supply can not be stopped even when water level is high. ' S2 }) \$ P8 Q Q2 N+ y
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Solution: turn off water supply and take the humidifier apart and clean it will stop the leaking.1 }* r% T) @( D% _2 _. s
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( S" h0 A4 g, M; Q7 N. c8 hOtherwise, find a professional or change a new set.