10 Easy Steps to Fix a Dishwasher That Won’t Drain

A dishwasher is a real time-saver, but it can be frustrating when you encounter problems such as a dishwasher not draining properly. If you've found yourself searching "why is my dishwasher not draining" or wondering, "why won't my dishwasher drain," you're not alone. It's a common issue that many households face. The good news is, fixing a dishwasher that won’t drain can be easier than you might think. In this guide, we'll cover ten simple steps to help you tackle the problem yourself.

 

Step 1: Turn Off the Power

 

Before you start, safety first! Disconnect the dishwasher from its power source. This can be done by unplugging it or turning off the circuit breaker. It’s crucial to avoid any risk of electric shock, especially if your dishwasher is leaking.

 

Step 2: Check for Blockages in the Drain Basket

 

Often, a dishwasher won't drain because the drain basket is clogged with food particles, soap scum, or other debris. Here’s how to check it:

 

• Open the dishwasher and remove the bottom rack.

 

• Locate the drain basket, which is usually in the bottom of the dishwasher.

 

• Remove any visible debris.

 

If you notice the dishwasher is clogged, it could be the reason your dishwasher is not draining efficiently.

 

Step 3: Inspect the Dishwasher Drain Hose

 

Another common reason why your dishwasher won’t drain is a kinked or clogged drain hose. The drain hose is typically connected to the sink drain or garbage disposal.

 

• Locate the hose under your sink.

 

• Check if it’s kinked or bent. If so, straighten it out.

 

• If there’s no visible issue, disconnect the hose and inspect the interior for blockages.

 

If you find that the hose is blocked, you can try using a wire hanger or a long brush to clear the obstruction.

 

Step 4: Examine the Garbage Disposal Connection

 

If your dishwasher not draining issue persists, the problem might be related to your garbage disposal. If it’s clogged or not working properly, it can cause the dishwasher to back up.

 

• Run the garbage disposal to clear out any blockages.

 

• Check the connection between the dishwasher and the disposal to make sure it’s secure.

 

Pro Tip: If you recently installed a new garbage disposal, ensure that the knockout plug was removed from the connection port.

 

Step 5: Clean the Air Gap

 

An air gap prevents water from back-flowing into the dishwasher, but if it’s clogged, your dishwasher may not drain. Here's how to clean it:

 

• Locate the air gap (usually a small cylinder on the sink or countertop).

 

• Remove the cover and check for debris.

 

• Use a small brush or a pipe cleaner to remove any blockages.

 

This simple task can quickly solve the issue if the air gap was the culprit.

 

Step 6: Check the Dishwasher Filter

The filter is designed to catch food particles, but over time, it can become clogged, leading to drainage problems.

 

• Remove the bottom rack and locate the filter (typically at the bottom of the dishwasher).

 

• Remove the filter and rinse it under warm water.

 

• Use a soft brush to gently scrub away any grease or food debris.

 

Ensuring the filter is clean can prevent future drainage issues.

 

Step 7: Test the Dishwasher Drain Pump

 

The drain pump is responsible for pushing water out of the dishwasher. If your dishwasher is leaking and not draining, it could indicate a problem with the pump.

 

• Listen for any unusual sounds while running the dishwasher. A humming or buzzing noise could mean the pump is struggling.

 

• If you suspect the pump is faulty, you may need to call a professional to replace it.

 

Step 8: Check the Dishwasher Float Assembly

 

The float assembly controls the water level in the dishwasher. If it's stuck, your dishwasher might not drain correctly.

 

• Locate the float (usually a small dome-shaped device at the bottom of the dishwasher).

 

• Gently lift and lower the float to ensure it moves freely.

 

• Clean any debris that might be preventing it from functioning properly.

 

Step 9: Use a Drain Cleaner Solution

 

Sometimes, mineral deposits or grease can build up in the dishwasher drain line, causing blockages. If you suspect this is the issue, you can use a gentle drain cleaner solution.

 

• Make sure to choose a dishwasher-safe cleaner.

 

• Follow the instructions carefully and allow it to sit for the recommended time.

 

• Run a hot water cycle to rinse the solution out.

 

This step can help dissolve any buildup that might be causing drainage problems.

 

Step 10: Run a Test Cycle

 

After following these steps, run a test cycle to see if your dishwasher drains properly. Check for any leaks or remaining water at the bottom. If your dishwasher is still leaking or not draining, it might be time to call a professional technician.

 

A dishwasher not draining can be a frustrating problem, but with these 10 easy steps, you can fix the issue yourself. By checking common culprits like a clogged drain, a blocked hose, or a faulty pump, you’ll often find that the solution is simpler than you expected. Regular maintenance and cleaning can also help prevent future problems, ensuring your dishwasher runs smoothly

 

If you've tried all these steps and still can't fix the problem, it might be time to call in a professional. At AP Pro Appliance, we have the expertise to diagnose and repair any dishwasher issue, ensuring your appliance is back up and running in no time. Don’t let a dishwasher that won’t drain disrupt your routine—reach out to us for quick, reliable service..