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I’ve had draining issues with dishwashers in the past and now have a new one. The appliance guy said my drain hose was clogged. My question is: Is it normal to have water pouring (when sink is on) out of the drain hose connector (nipple) when it is not connected? One guy said this shouldn’t happen. I’d hate for my new dishwasher to stop draining correctly. Thanks!!
Hi @howdyapril , He was correct. Here’s an image showing the P trap under a sink (I don’t know if yours is the same but it should be similar). Notice that the dishwasher connection is angled downwards so any water flowing down from the sink cannot flow back up to and out of the dishwasher hose connection unless there was a blockage, which slows the water flowing down the drain. A blockage would cause the water to backup and flow out through it as it cannot get away quickly enough down the drain as it normally should
(click on image to enlarge for better viewing If you block off the dishwasher connection does the water drain slowly from the sink at all? It may be a blockage in the P trap, the drain or perhaps a problem with the main air vent for the drain lines
