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. 0 o2 v' l i8 d6 b% ~6 ?9 Z
F, i4 \$ X6 Z- e$ bSolution: turn off water supply and take the humidifier apart and clean it will stop the leaking./ K& W7 K& k3 {& L0 ~7 X% f8 Q
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Otherwise, find a professional or change a new set.