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. % N6 t9 z6 k1 A f: i8 E0 R8 Z5 B1 q2 I# G9 d: X
Solution: turn off water supply and take the humidifier apart and clean it will stop the leaking.$ x1 X9 {( H1 f1 Z& p" e' ^
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2 {, s: R. f8 JOtherwise, find a professional or change a new set.