To replace the unit is about equally easy. If necessary thread the feet screws to change the height. Most sit on four adjustable feet that are integrated into the casing. Sometimes the retaining screws are placed into the floor instead. To remove the old dishwasher unit, open the door far enough to see and remove any retaining screws threaded into the underside of the cabinet top. They're typically found threaded through the cabinetry to the space under the sink. Also disconnect the water supply hose, sometimes made of copper but just as often a plastic tube. Now disconnect the drain line, which typically connects to a garbage disposal under the kitchen sink. In rare cases, it may be necessary to turn off the house water supply for about an hour. Many use a small, separate valve under the kitchen sink.

Next, turn off any water supply to the dishwasher. Cap off the wires with plastic wire caps for protection. Before touching any wires, make sure the power is off by testing with a voltmeter. Remove it and look for wiring that powers parts of the dishwasher. To test, turn on the dishwasher to make sure nothing comes on.ДЄt the bottom of most dishwashers is a panel that comes off easily. Just flip off the breaker that protects the circuit. Fortunately, there's at least one appliance in the kitchen that is a snap to replace on all your own: the dishwasher.ДЇirst, shut off the electricity to the dishwasher.

How to replace a dishwasher