I have a pretty new dual-flush toilet whose fill valve suddenly started leaking for no reason. A picture of the toilet is below:
Basically, the toilet flushes normally once the button is pressed. Water flows from the tank into the bowl. However, there is a problem with the fill valve. While water is supposed to refill the tank from the bottom, it instead leaks out through the gaps in the fill valve. (Picture below)
As you can see, water is coming out from the top of the valve and leaking out into the toilet. If I pull the lever up, the leak stops, but once I release the water starts leaking again. For whatever reason the tank never fills and the water keeps leaking forever.
Now, if I turn off the main valve and turn it back on again, the tank fills normally through the bottom. No water leaks through the fill valve. Of coure, the problem repeats if I flush again.
The problem with these new toilets is that there's no information online on how to fix them. Does anyone here know how to stop this leak and make the water go in through the bottom again?