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. $ x' a% E1 H: |; D& {4 X) Q" {
7 t4 c+ Z3 ?% m% l: H) D# D2 WSolution: turn off water supply and take the humidifier apart and clean it will stop the leaking. , ^* k! ?+ v; P* l- `' Z& b7 p N7 @. O
, `5 i, u9 R) COtherwise, find a professional or change a new set.