Eliminating a Strong Odor in a KitchenAid KADW7000 Dishwasher

Understanding the Source of Odors in Your KitchenAid KADW7000

A dishwasher that emits a strong, unpleasant odor is more than just a nuisance; it can be an indicator that something inside the appliance is not functioning properly. Before you start swapping out parts or calling a technician, it is helpful to understand the common sources of smells in a dishwasher and how they apply specifically to the KitchenAid KADW7000 model.

• Food debris that gets trapped in the spray arm, drain, or filters can begin to decompose, producing a foul scent.
• Residual detergent or rinse aid left in the machine can build up, especially if the detergent compartment is not rinsed thoroughly.
• Aged or damaged seals and gaskets may hold moisture and provide a breeding ground for mold or mildew.
• Blocked or clogged spray arms reduce water flow, leading to stagnant water that can also become odorous.
• Hard water or mineral deposits can create a crust that traps bacteria and food particles.

With these points in mind, you can systematically inspect and clean each potential culprit in your KADW7000.

Step 1: Power Off and Safety First

Before you open the dishwasher or begin cleaning, disconnect the unit from the power supply and shut off the water valve. This precaution protects you from electric shock or water damage.

• Turn off the electric outlet or unplug the dishwasher.
• Close the water supply valve located behind the appliance or on the kitchen water line.

Once the appliance is isolated, you can safely proceed with the cleaning process.

Step 2: Remove and Clean the Spray Arms

The spray arms are the heart of any dishwasher’s cleaning action. In the KADW7000, there are typically two removable arms: the upper and the lower.

1. Take the top rack out so you can access the upper spray arm.
2. Unscrew the spray arm by hand or with a wrench, depending on the attachment style.
3. Rinse the spray arm under running water, using a small brush (a toothbrush works well) to dislodge any grit or residue from the spray holes.
4. Reattach the arm securely to avoid leaks during a cycle.

If the holes are clogged, you can use a small pin or toothpick to clear them. This step is crucial because a blocked spray arm can leave dishes dirty and water stagnant inside the machine, fostering odors.

Step 3: Inspect and Clean the Filters

The KADW7000 is equipped with a filter that traps food particles before they reach the drain. Over time, this filter accumulates debris and can become a source of smell.

• Locate the filter: It is usually at the bottom of the dishwasher in a circular or rectangular slot.
• Remove the filter by lifting it or twisting, depending on its design.
• Wash it under hot running water. Use a mild dish soap if the filter is visibly dirty.
• Check for damage: Cracks or tears in the filter can allow debris to bypass the filtration system.
• Reinstall the filter, making sure it sits firmly in place.

Repeat this process after each cycle if you are noticing lingering smells, as the filter can quickly become saturated in heavy-use households.

Step 4: Clean the Door Seal and Gasket

The rubber seal around the dishwasher door is a common spot for mold and mildew. The KADW7000’s door seal can trap food crumbs and water, creating a perfect environment for odor-causing growth.

1. Inspect the seal for visible stains or mildew. Pay close attention to the folds and corners.
2. Create a cleaning solution: Mix one part vinegar with one part water in a spray bottle. Vinegar is effective at breaking down mold.
3. Spray the solution generously over the seal, letting it sit for 5-10 minutes.
4. Wipe the seal with a soft cloth or sponge, ensuring you reach every crevice.
5. Rinse the cloth and wipe again to remove any residual vinegar.

After cleaning, let the seal dry completely before closing the dishwasher door. A dry seal will reduce the likelihood of future odor problems.

Step 5: Run a Cleaning Cycle with Dishwasher Cleaner

Many manufacturers recommend using a dishwasher cleaning product specifically designed to dissolve buildup. For the KitchenAid KADW7000, the following routine works well:

• Purchase a dishwasher cleaning tablet or liquid. Brands such as Affresh or Finish offer products that target grime and odors.
• Place the cleaner in the detergent dispenser or directly in the dishwasher’s bottom rack.
• Run a full cycle on the hottest setting. This allows the cleaning solution to work through all components, including the interior walls and spray arms.

After the cycle finishes, open the door and let the dishwasher air dry. This simple step can drastically reduce lingering odors.

Step 6: Check the Drain Hose and Garbage Disposal Connection

If your KADW7000 is connected to a garbage disposal, the drain hose may be a source of odor if it’s not correctly sealed or if it has a kink.

1. Locate the drain hose: It runs from the dishwasher to the disposal or sink drain.
2. Inspect for kinks or cracks. A kink can impede water flow, leading to stagnant water that smells.
3. Detach the hose carefully and clean it by flushing it with hot water. You can also insert a small brush to clear any blockage.
4. Reconnect the hose, ensuring the clamp is snug but not overly tightened to avoid damage.

If you have a garbage disposal, make sure it is running frequently to prevent food from lingering. Running a disposal with hot water and a small amount of vinegar once a week can keep the system fresh.

Step 7: Address Hard Water and Mineral Deposits

Hard water deposits can accumulate inside the dishwasher, especially on the heating element, spray arm, and interior walls. These deposits create a crust that holds moisture and bacteria.

• Test your water hardness by using a simple test strip or by contacting your local water supplier. If hardness is above 8 grains per gallon, consider installing a water softener.
• Use a dishwasher rinse aid designed to reduce mineral buildup. Some rinse aids also contain enzymes that help break down food particles.
• Run a vinegar rinse: After a normal wash cycle, run an empty cycle with a cup of white vinegar placed on the top rack. The vinegar will help dissolve mineral buildup and neutralize odors.

Step 8: Keep the Interior Dry Between Uses

Odors thrive in moist environments. After each cycle, leave the dishwasher door open for 15-20 minutes to allow the interior to dry completely. If you have a kitchen that is frequently humid, consider using a small, inexpensive dehumidifier in the cabinets or placing silica gel packs inside the machine to absorb moisture.

Step 9: Inspect the Detergent Dispenser

Sometimes, a strong odor can come from detergent residue left in the dispenser. Over time, the dispenser can accumulate detergent film that smells when it breaks down.

1. Remove the detergent dispenser (consult your owner’s manual for the exact removal process).
2. Wash it under hot water with a brush to clean all the nooks.
3. Rinse thoroughly and dry before reinstalling.

Use a dishwasher-safe detergent and avoid overloading the dispenser with too much detergent, which can leave excess residue.

Step 10: Use a Regular Cleaning Schedule

Preventative maintenance is the most effective way to keep your KADW7000 odor-free.

• Monthly: Run an empty cycle with a dishwasher cleaner or a cup of vinegar.
• Weekly: Inspect and clean the spray arms, filters, and door seal.
• Bi‑monthly: Check the drain hose and garbage disposal connection for clogs.
• Quarterly: Test the water hardness and consider a water softener if needed.

By adhering to a routine, you avoid the buildup that leads to strong odors.

Troubleshooting: When the Smell Persists

If you have followed all the steps above and still notice a strong odor, consider these advanced checks:

1. Check for Hidden Food Particles

• Remove the racks and inspect the bottom of the dishwasher. Look for stuck or partially dissolved food items that may not be visible at first glance.
• Use a flashlight to see inside the corners and behind the door seal.

2. Examine the Heating Element

• The heating element can develop rust or mineral deposits that may emit smells. Inspect it carefully after removing any protective covers, following the manufacturer’s safety guidelines.

3. Inspect the Water Inlet Valve

• A leaking or malfunctioning water inlet valve can introduce contaminants. Ensure the valve is not damaged and that the water flow is smooth.

4. Verify the Ventilation

• Some models have a vent or air gap that can become clogged. If present, clean it to allow proper airflow and prevent odor retention.

When to Call a Professional

If you have exhausted all self‑service options and the odor persists, it may be time to involve a certified technician. Common scenarios that warrant professional help include:

• Electrical issues: Strange noises, sparking, or a failure to start after all mechanical cleaning steps.
• Severe mold growth: Visible mold on the interior surfaces or inside the door seal that cannot be removed by routine cleaning.
• Water leaks: Persistent leaking that leads to water pooling inside or outside the dishwasher.

KitchenAid offers a network of authorized service technicians who are familiar with the KADW7000’s internal components. Their expertise can save you time and prevent further damage to your appliance.

Maintaining a Fresh-Smelling Dishwasher Over Time

Beyond routine cleaning, several habits will keep your KADW7000 smelling like fresh dishes rather than lingering odors:

• Use the right amount of detergent: Too much detergent can cause buildup and smells.
• Never overload the dishwasher; give each load enough room for water and spray to circulate.
• Place dishes correctly: Avoid blocking the spray arms with large pots or plates.
• Avoid placing raw meats or fish in the dishwasher, as the proteins can produce strong odors.
• Run a quick rinse cycle before a full wash if the dishes are only lightly soiled, to prevent residue accumulation.

Final Thoughts

A strong odor coming from your KitchenAid KADW7000 is usually a sign that food particles, detergent residue, or mineral deposits have settled in hard-to-reach places. By following the systematic cleaning steps outlined above—removing and cleaning spray arms, filters, door seals, and using specialized dishwasher cleaners—you can eliminate the smell and restore your dishwasher’s performance.

Remember, regular maintenance is the key to preventing odor buildup. Treat your appliance like a well‑kept engine: regular checks, timely cleaning, and the right parts will keep it running smoothly for years to come.