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. 8 s) w! p5 f z6 V8 a( M) H+ _ 8 M) \$ N) q7 _2 p8 q9 BSolution: turn off water supply and take the humidifier apart and clean it will stop the leaking.' ^( t* p' L' z, M+ R
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! a$ O6 Q: i8 hOtherwise, find a professional or change a new set.