I've got a double flush toilet. For some reason, and on an increasingly regular basis, either the main flush or the small flush button isn't - for want of a better description - catching.
I'll try to explain.
I press the button and whereas it used to flush strongly straight away, nowadays I just hear a small, slight flush. In order to get the frull flush I have to hold the button down for a few seconds.
Anyone got any idea of what's going on?