Why Is My Dishwasher Making a Loud Noise and Buzzing? 5 Common Reasons

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Michael Foster
February 24, 2024
Home appliances
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Is Dishwasher Making Loud Buzzing Noise? Here’s What To Do

Ah, the sweet harmony of a peaceful home – until the sudden intrusion of a dishwasher makes a buzzing noise and deafening clamor disrupts the tranquility. Your once serene kitchen now resembles a noisy orchestra hall. If you find yourself wondering why your dishwasher is making a loud noise and unleashing an unpleasant cacophony, worry not, for we have the answers you seek.
This blog will uncover the five most common reasons behind your dishwasher's obnoxious symphony, decoding the mystery and providing you with the knowledge to restore peace to your culinary sanctuary. Let's embark on this journey of dishwasher troubleshooting and restoring harmony to your kitchen soundscape!

5 Things to Check When Dishwasher Makes Buzzing Noise

Is the buzzing noise coming from your dishwasher driving you crazy? Don't fret! We'll provide you with five essential things to check when your dishwasher starts making that annoying buzzing sound. By addressing these common culprits, you can get to the root of the problem and restore peace to your kitchen.
1. Check for Loose Items
When your dishwasher makes a loud noise, it can be quite bothersome. One of the most common culprits behind this issue is loose items inside the appliance. As the dishwasher runs, the force of water pressure and vibrations can cause objects within, such as utensils or small dishes, to become unsettled and generate a buzzing sound.
To tackle this problem, carefully investigating the dishwasher's interior is essential. Begin by removing the bottom rack to gain access to the main area. Thoroughly examine the silverware basket, corners, and crevices where items may have shifted during the wash cycle. Loose utensils or dishes can easily be dislodged and contribute to the buzzing noise.
Once you've identified any loose items, take immediate action to secure or remove them. This will not only eliminate the annoying buzzing sound but also prevent any potential damage to the components. Ensure that utensils and dishes are securely placed in their designated compartments or racks, minimizing movement during operation. Additionally, remove any unnecessary items that don't belong in the dishwasher, as they can exacerbate the noise issue.
By addressing the problem of loose items, you can effectively resolve the buzzing noise predicament in your dishwasher. Loose objects have the potential to disrupt the proper functioning of components like the spray arms and motor, leading to further complications if ignored. Through a thorough inspection and diligent tidying, you can enjoy a quieter and more efficient dishwasher experience.
2. Check the Spray Arms
Another potential cause of a loud buzzing noise in your dishwasher is a faulty or misaligned spray arm. The spray arms play a crucial role in the cleaning process by distributing water and detergent throughout the dishwasher. However, over time, they can become clogged with debris, such as food particles and mineral deposits, hindering their proper functioning.
When the spray arm nozzles are obstructed, water flow becomes disrupted, resulting in vibrations and a buzzing sound during operation. To address this issue:
  • Begin by carefully inspecting the spray arms for any blockages.
  • Remove them from the dishwasher and give them a thorough cleaning using a brush and warm, soapy water.
  • Pay close attention to the nozzles, ensuring they are clear of any debris or build-up.
Additionally, make sure the spray arms are securely attached and properly aligned with the water jets. Loose or misaligned spray arms can lead to vibrations and noise during the wash cycle. Adjust the arms as needed to ensure a snug fit and correct alignment.
By cleaning and maintaining the spray arms, you can restore their functionality and eliminate the buzzing noise in your dishwasher. Regularly checking for blockages and keeping the spray arms clean will not only resolve the noise issue but also improve the overall cleaning performance, ensuring sparkling clean dishes every time.
3. Check the Dishwasher Filter
The dishwasher filter is another important component to check when your dishwasher is making a buzzing noise. The filter prevents food particles and debris from recirculating onto your dishes during the wash cycle. However, over time, the filter can become clogged with accumulated debris, hindering water flow and causing noise issues.
A clogged dishwasher filter restricts the water from flowing freely, which can lead to vibrations and buzzing sounds during operation. To address this problem, locate the dishwasher filter, usually located at the bottom of the appliance, near the spray arm. Carefully remove the filter and check it for any signs of blockages or build-up.
If you find the filter to be clogged, clean it thoroughly under running water or soak it in warm, soapy water to remove any trapped debris. To remove tough residues, use a gentle brush such as a soft brush or a toothbrush for scrubbing. Once the filter is clean, reassemble it back into the dishwasher, ensuring it is properly seated and secure.
Regularly checking and cleaning the filter is essential to maintain optimal performance and prevent buzzing noises. By keeping the filter free from debris, you can ensure proper water flow, efficient cleaning, and a quieter dishwasher operation.
4. Check the Water Inlet Valve
The water inlet valve is essential to check when your dishwasher is making a buzzing noise. The water inlet valve controls the water supply to the dishwasher, regulating the flow and pressure of water during the wash cycle. If the valve is faulty or damaged, it can result in inadequate water supply or irregular water pressure, leading to buzzing or vibrating noises.
To inspect the water inlet valve, start by turning off the dishwasher's power and water supply. The valve is typically located behind the bottom kickplate or at the base of the dishwasher. Carefully examine the valve for any visible signs of damage, such as cracks or leaks. If you notice any issues, it is advisable to replace the valve with a compatible one.
Follow the manufacturer's instructions when replacing the water inlet valve, and use the correct replacement part. It's important to choose a valve that matches the make and model of your dishwasher to ensure compatibility. Once the new valve is installed, restore the power and water supply to the dishwasher.
By checking and replacing a faulty water inlet valve, you can ensure a steady and appropriate water supply, eliminating buzzing noises caused by insufficient flow or irregular pressure. This not only helps in resolving the noise issue but also maintains the optimal functioning of the appliance.
5. Check the Motor and Bearings
If your dishwasher is making a loud buzzing noise that appears to come from the motor area, it could be a sign of a problem with the motor or worn-out bearings. The motor is responsible for powering the dishwasher's various functions, while the bearings help support and stabilize its rotating components. Over time, both the motor and bearings can wear down, resulting in unusual noises during operation.
In such cases, it is best to seek assistance from a licensed technician who specializes in dishwasher repairs. They have the expertise and knowledge to inspect the motor and bearings comprehensively. They can identify any issues, such as a malfunctioning motor or worn-out bearings, and recommend the appropriate solution.
Depending on the severity of the problem, the technician may suggest repairing the motor or replacing worn-out bearings. In some cases, it may be more cost-effective to replace the entire motor assembly. A licensed technician will be able to provide an accurate diagnosis and guide you on the most suitable course of action.
Addressing motor or bearing problems requires specialized knowledge and tools, so it is essential to rely on professional assistance. By seeking the help of a licensed technician, you can ensure that the motor and bearings are properly inspected, repaired, or replaced, resolving the buzzing noise issue and restoring your dishwasher's optimal performance.
Remember that regular maintenance and timely repairs will eliminate the buzzing noise and ensure the optimal performance and longevity of your appliance. Embrace the tranquility and efficiency your dishwasher was designed to deliver, and say goodbye to the bothersome buzzing noise.

Your Appliance Repair Partner

If you're facing dishwasher issues and wondering why it's making a loud noise, don't hesitate to seek professional help. Contact Home Alliance for prompt and reliable appliance service. Our licensed and well-trained technicians have the expertise to diagnose and fix the problem efficiently.
With their good attitude and commitment to customer satisfaction, you can trust them to resolve your dishwasher issues. Plus, our economical service charges make it a cost-effective choice. Take action today and let Home Alliance handle your dishwasher troubles with expertise and care.