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. 5 V) c, Y9 b7 {9 k8 s
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Solution: turn off water supply and take the humidifier apart and clean it will stop the leaking.+ R- _2 l. `5 M6 u, U
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! {3 {6 X+ M7 U& @Otherwise, find a professional or change a new set.