Amana dishwashers are known for operating pretty quietly. You should only hear a gentle hum and swishing water when the machine is in use. Loud squealing, screeching, or grinding noises are not typical and need further troubleshooting.
Your Amana dishwasher is making loud noises because of worn-out pump bearings, a broken pump impeller, or a clogged or worn-out drain pump. The water inlet valve can also be the source of loud noises if its diaphragm is warped or worn out due to long-term use.
Loud noises from a typically quiet appliance like your Amana dishwasher can be quite discomforting. So, read this guide to discover how you can eliminate that noise.
Why Is My Amana Dishwasher Making Loud Noises?
It’s normal for an Amana dishwasher to make soft sounds like rushing or swishing water. But when the sounds from your machine are loud and uncomfortable, that’s a sign that you’ve got a problem.
Here are the typical sources of loud noises coming from Amana dishwashers and what you can do to stop them:
Worn-Out Pump Bearings
About this part: Your Amana dishwasher has two kinds of pumps inside it. First, the circulation pump drives water around to wash your dishes. The second is a drain pump that removes dirty water from the appliance.
Both pumps have bearings that enable them to spin pump impellers at high speeds. When the bearings are in excellent condition, the pump impellers can spin smoothly and without noise.
What’s wrong with it: The bearings inside your dishwasher’s pumps can wear out for several reasons. For example, the bearings might experience excessive wear due to overloading or be corroded after many years of heavy use.
Whatever the reason, pump bearings will start to make loud squeaking or clicking noises once they become worn out. Those noises will happen whenever the affected pump turns its impeller at high speeds.
How to fix it: You can fix this problem by replacing the worn-out pump bearings. Unfortunately, finding replacement bearings is often too challenging to be worthwhile.
So, a more practical and straightforward solution is to replace the affected pump entirely. After all, if the bearings have reached the point where they are worn out, it’s likely that other parts of the pump have also experienced excessive wear.
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Broken Pump Impeller
About this part: The impeller is another crucial component in your Amana dishwasher’s pumps. That’s the part that spins at high speeds to drive water to where it’s needed.
Again, each pump (and, therefore, its impeller) has a different purpose. For example, the circulation pump impeller drives water to the wash arms to clean your dishes. Meanwhile, the drain pump impeller drives water out of the machine and into your household drain.
The impeller attaches to the pump motor that turns it when necessary.
What’s wrong with it: Loud noises in your dishwasher can also come from a broken pump impeller. The impeller is typically damaged by hard foreign objects that enter the pump, which breaks one or more of the impeller fins.
When that happens, the impeller will grind against the pump’s body as it turns. Not only does that cause a loud grinding or screeching noise, but it also risks damaging the pump further from the inside.
How to fix it: Replacing the broken pump impeller is a possible solution. Again, finding these individual parts can be challenging, as they’re not universal.
So, you or your repair technician will have to find an impeller designed for that specific pump.
Instead, a more practical solution would be to replace the affected pump entirely.
Clogged Or Worn Out Drain Pump
About this part: As you saw earlier, the drain pump’s purpose is to remove used water from inside the dishwasher. This pump sits at the bottom of the compartment in the sump area, where dirty water and food bits fall during a wash.
That’s why the dishwasher filter is crucial. It prevents food bits and other objects from getting sucked into the drain pump, potentially causing problems.
The drain pump will run at least once at the end of each wash cycle. However, some dishwashers will also run the pump mid-cycle to remove dirty water so they can refill with clean water.
What’s wrong with it: The drain pump can be the source of the loud noises you’re hearing in your Amana dishwasher. Firstly, that pump can be worn out after many years of use.
Earlier, you saw how the drain pump’s bearings or impeller could be damaged or worn out. Besides that, the pump’s motor and other components can also wear out and cause loud noises.
Additionally, food bits and foreign objects could have been trapped inside the pump, causing it to make loud noises whenever it runs.
How to fix it: When the drain pump wears out and starts to experience lots of problems, the best solution is to replace it with a new one. The same is true for clogs inside that you can’t successfully clean out.
Investing in a new drain pump will restore life to your Amana dishwasher and keep it running for many years.
Water Inlet Valve Diaphragm Problems
About this part: The water inlet valve controls your Amana dishwasher’s water inflow. It uses a diaphragm to open and close, filling your dishwasher with enough water and preventing overfilling.
When functioning normally, you’ll only hear rushing water as the valve opens.
What’s wrong with it: Loud noises, particularly during the dishwasher’s filling stages, are likely coming from the water inlet valve.
More specifically, the valve’s diaphragm is worn out after long-term use. After all, the valve opens and closes each time your dishwasher fills before and during a wash cycle.
How to fix it: Replacing the water inlet valve’s diaphragm alone is impossible, as the part isn’t sold separately. So, if you’re sure it’s the root cause of your problem, you should replace the water inlet valve with one that works.
It’s best not to delay that replacement because the worn-out diaphragm can affect the water inlet valve. A faulty valve component can prevent the dishwasher from working normally and disrupt your dishwashing habits.
Frequently Asked Questions (FAQs)
Here are a few more things you should know about your Amana dishwasher and the sounds it makes:
What Does A Normal Amana Dishwasher Sound Like?
A normal Amana dishwasher will make rushing and swishing water noises and a gentle humming noise during its regular operation.
How Long Does A Dishwasher Pump Last?
Dishwasher pumps typically last up to 10 years. So if your Amana dishwasher is close to that age and its pumps make loud noises, investing in new pumps would be an excellent idea.
How Can I Make My Dishwasher Quieter?
The most effective and essential way to make your loud dishwasher quieter is to fix whatever part is worn-out. Remember: Amana dishwashers are already designed to be incredibly quiet. As long as its components are in excellent working condition, you won’t have to worry about loud noises from the machine.
How Many Decibels Is An Amana Dishwasher?
An Amana dishwasher is approximately 60-63 decibels. That’s equivalent to the sound levels we make during a normal conversation.
How Can You Soundproof A Dishwasher?
As mentioned before, Amana dishwashers are already very quiet. But if you need added soundproofing, you can invest in an insulating blanket and soundproof mats. Wrap the insulating blanket around the machine, and place the soundproofing mats underneath. That will minimize the dishwasher’s sounds even further.