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. - y4 j9 M8 J3 E0 E5 p( B% `
9 |5 k [; a8 b$ H* J, H1 G. E; QSolution: turn off water supply and take the humidifier apart and clean it will stop the leaking. # m( y$ D3 s0 |9 l $ K. x: r/ Q- }( L! u5 Z4 c1 P% r% p4 s: Z3 \% v
Otherwise, find a professional or change a new set.