Sink Fills Up When Dishwasher Runs

It can be frustrating when your sink fills up when your dishwasher runs. This is not a common problem, but it can be caused by a few different things. In this article, we will discuss the most common causes of this problem and how to fix them.

Clogged Drain Hose

One of the most common causes of a sink filling up when the dishwasher runs is a clogged drain hose. The drain hose is the hose that carries the wastewater from the dishwasher to the drainpipe. If the drain hose is clogged, the wastewater will not be able to drain properly and will back up into the sink.

To fix a clogged drain hose, you will need to locate the hose and clear the clog. The drain hose is usually located under the kitchen sink. Once you have located the hose, you can use a pair of pliers to loosen the hose clamp and disconnect the hose from the dishwasher. Once the hose is disconnected, you can use a drain snake or a wet/dry vacuum to clear the clog.

Air Gap Clog

Another common cause of a sink filling up when the dishwasher runs is a clogged air gap. The air gap is a small device that is installed on the kitchen sink. The air gap allows air to enter the drain hose, which prevents the dishwasher from siphoning water from the sink. If the air gap is clogged, the dishwasher will not be able to drain properly and will back up into the sink.

To fix a clogged air gap, you will need to remove the air gap and clean it. The air gap is usually located on the kitchen sink near the faucet. Once you have removed the air gap, you can use a small brush or a toothpick to clean the clog. Once the air gap is clean, you can reinstall it on the kitchen sink.

Faulty Dishwasher Valve

In some cases, a sink filling up when the dishwasher runs can be caused by a faulty dishwasher valve. The dishwasher valve is the valve that controls the flow of water into the dishwasher. If the dishwasher valve is faulty, it can allow water to leak into the dishwasher even when the dishwasher is not running. This can cause the dishwasher to fill up with water and overflow into the sink.

To fix a faulty dishwasher valve, you will need to replace the valve. The dishwasher valve is usually located under the kitchen sink. Once you have located the valve, you can use a wrench to remove the old valve and install the new valve.

If you have tried all of the above solutions and you are still having problems with your sink filling up when the dishwasher runs, you may need to call a plumber. A plumber can help you diagnose the problem and find a solution.