Hotpoint 9 cycle washer won't finish draining after agitate cycle
Water pressure level switch. The knob automatically turns based on inputs from various sensors and switches. It seems your pressure switch gets stuck in a high pressure reading with the model of your unit I can be more specific, here's a link of what the problem likely is. https://www.thespruce.com/repair-washing-machine-water-level-fill-switch-1824607
This is possibly what you are looking for.