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. : x5 }. g2 P# T3 Z1 d9 _6 k$ ~! T+ U& ^6 Q5 [$ A
Solution: turn off water supply and take the humidifier apart and clean it will stop the leaking. # u8 d: T* R: F3 w: p) H + T. A1 \: n1 i & C$ w7 {& ~8 l# pOtherwise, find a professional or change a new set.