The drain hose is the tube that links the dishwasher with your garbage disposal. Take this opportunity to clean any dirt build up on the spray arm and the inside of the dishwasher door. Most of the time, a dishwasher won't drain if one of its hoses was installed incorrectly. The Bosch dishwasher is a home appliance with seven different wash settings, and can be adjusted based on the type of dishes loaded in the machine for the best type of cleaning. You may have to pull the dishwasher out or locate it under the sink. If your drain doesn't have a dishwasher fitting, replace the drain tailpiece (the vertical pipe directly below the sink) with a dishwasher tailpiece (wye fitting). A kinked drain hose—the lightweight, ribbed plastic hose that connects from the dishwasher’s drain pump to the garbage disposal (or to an air cap)—can prevent water from draining. Certain errors codes such as 5C, 5E, OC, or OE indicate that your dishwasher is not draining correctly. Like any commercial unit, water might back up and not drain properly on a rare occasion. If an air gap fitting is used, there will be two lengths of drain hose: the factory drain hose on the dishwasher, which runs from the dishwasher to the smaller of the two tailpieces on the air gap, and a 7/8-inch (inside diameter) hose that runs from the other tailpiece on the air gap to the dishwasher nipple on the garbage disposal. The first step in cleaning a dishwasher drain is to empty the dishwasher, remove the cleaning racks and dishwasher filter. Note: For this step, you will need to access the dishwasher drain hose, which requires knowing how to remove a dishwasher . Once you've found it, loosen the pipe clamp and carefully disconnect the hose. Step 2 - Check the Dishwasher's Drain Hose. An alternative is to connect to the dishwasher nipple on the garbage disposal. Dishwashers can make life just a little bit easier. Insert the hose through the hole and attach it to the dishwasher drain fitting on your sink drain. The drain hose is the tube that links the dishwasher with your garbage disposal. Connecting the Drain Hose . From plates and platters to flatware and barware, Hobart dishwashers make warewashing simple and convenient. Find out where your dishwasher's drain hose is connected to the sink or the garbage disposal drain pipe. For the latter, you’ll need to first pull your dishwasher away from the wall to access the hose. You'll need to inspect the hoses and check some other things to get your dishwasher draining again. Drain Connection With Air Gap and Garbage Disposal . There is a hose that runs from the dishwasher and into your sewer system, pumping the water out. This is located either under your sink or behind the dishwasher itself. No matter if you are hosting a large party or cooking for yourself, doing the dishes is rarely an endeavor that one wants to undertake. 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