Water overflowed from tub onto floor

The problem was not in the switch but in the plastic hose from the tub to the switch. The hose was cracked and air/water leaked which therefore didn't activate the switch. I removed the top back cover to access the switch and released the hood of the machine, like a car, using a thin scaper to depress the spring loaded retaining clips. The hose was cracked at the tub just above the retainig clip. I bought new hosing at a local hardware store and replaced the switch to omit both of them as a future problem. Sell the tube with the switch as a package deal? Damage to tube may occur from violent, out of balance, spinning tub on spin cycle.