If the tank is not filling all the way (there should be a fill line on the inside of the tank), carefully bend the bulb of the float valve up a bit and see if the tank will fill.
如果水箱没有充满正常水量(水箱内侧应该有一条水位线)，慢慢地弯曲一下浮囊阀，看水位会不会上升。
2
Now, control methods that detect tank water level of household water flushing closestool usually include mechanical float or pontoon, but the problem of closestool leaking was not solved.