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Frigidaire dishwasher model number FDB4050LHS1 making a loud squealing noise

It cleans and drys well, but during the last 20-30 minutes of the cycle it starts to make this LOUD ANNOYING squealing sound and we have checked to make sure no foreign objects were stuck in it and everything like that .... any other suggestions? We have no clue where to begin at?

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Usually this is the drying time of the cycle. I would have a professional look into the blower assembly and heating elements of the unit.

Posted on Aug 27, 2012

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Posted on Jan 02, 2017

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SOURCE: Our Frigidaire Ultra Quiet II dishwasher loud buzzing noise- wash

No longer "ultra quiet" huh?

A sound during certain cycles indicates a broken part. By the information provided sounds like a pump may be the problem. You may need to contact a service tech about this issue. If the appliance still under warranty, the service should be provided for free.

Every time when you hear noises (other than the normal ones) in the appliance, it indicates there is something wrong and it will worsen over time, so as soon you hear something is not ok, get assistance.

Posted on Aug 30, 2009

bigg t
  • 640 Answers

SOURCE: Loud Squeal: Clean and Rinse Cycles

Just on a whim i would say the bearings in the motor are worn.Any leaks?It's also possible that some broken glass went through the screen and into the pump motor if any glass has been broken.

Posted on Apr 09, 2009

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test this steps and fix it. God bless you

Drain Pump

If the dishwasher is loud during operation, the drain pump might be defective or might have some debris in it. This is a common problem.


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Circulation Pump

If the dishwasher is loud during operation, and the noise is a continuous drone similar in speed to the circulation pump sound, it's likely that the circulation pump motor bearings have failed. Once this happens the circulation pump will have to be replaced, the bearings are not repairable.


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Help me find my model number


Drain Impeller

If the dishwasher is loud during operation, the drain impeller might be broken, or there might be debris in the pump. Generally, to gain access to the pump the top of the pump housing will have to be removed.


Enter your model number to see parts for your dishwasher.
Help me find my model number


Pump and Motor Assembly

If the dishwasher is loud the motor bearings, drain impeller or wash impeller might have worn out. All three of these components are part of the pump and motor assembly. It may be possible to replace one of the impellers, but the motor bearings cannot be repaired. In that case the pump and motor assembly will need to be replaced.


Enter your model number to see parts for your dishwasher.
Help me find my model number


Wash Impeller

The wash impeller is a small, plastic blade. The motor spins the impeller forcing water through the spray arms to clean the dishes. If one or more blades has broken off of the impeller the dishwasher is loud. The impeller can also scrape against the pump housing if it is damaged, warped or bent.


Enter your model number to see parts for your dishwasher.
Help me find my model number


Circulation and Drain Pump Motor

If the dishwasher is loud during operation, and the noise is a continuous drone similar in speed to the motor sound, it's likely that the circulation and drain pump motor bearings have failed. Once this happens the motor will have to be replaced, the bearings are not repairable.


Enter your model number to see parts for your dishwasher.
Help me find my model number


Water Inlet Valve

The water inlet valve is an electrically controlled water valve. When it is new, the water inlet valve is very quiet. Over time, the diaphragm inside the valve deteriorates and deforms. This deformation interacts with the water rushing in and can cause a loud vibration, buzzing, squealing or other noises. If the dishwasher is loud during the filling cycle, replacing the water inlet valve may solve the problem.

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I have a year old kitchen aid dishwasher and during fill cycle it makes a thumping noise. The dishwasher every 5 or 10 seconds shuts off fill cycle then turns back on which I think is what's causing...


Drain Pump

If the dishwasher is loud during operation, the drain pump might be defective or might have some debris in it. This is a common problem.


Enter your model number to see parts for your dishwasher.
Help me find my model number


Circulation Pump

If the dishwasher is loud during operation, and the noise is a continuous drone similar in speed to the circulation pump sound, it's likely that the circulation pump motor bearings have failed. Once this happens the circulation pump will have to be replaced, the bearings are not repairable.


Enter your model number to see parts for your dishwasher.
Help me find my model number


Drain Impeller

If the dishwasher is loud during operation, the drain impeller might be broken, or there might be debris in the pump. Generally, to gain access to the pump the top of the pump housing will have to be removed.


Enter your model number to see parts for your dishwasher.
Help me find my model number


Pump and Motor Assembly

If the dishwasher is loud the motor bearings, drain impeller or wash impeller might have worn out. All three of these components are part of the pump and motor assembly. It may be possible to replace one of the impellers, but the motor bearings cannot be repaired. In that case the pump and motor assembly will need to be replaced.


Enter your model number to see parts for your dishwasher.
Help me find my model number


Wash Impeller

The wash impeller is a small, plastic blade. The motor spins the impeller forcing water through the spray arms to clean the dishes. If one or more blades has broken off of the impeller the dishwasher is loud. The impeller can also scrape against the pump housing if it is damaged, warped or bent.


Enter your model number to see parts for your dishwasher.
Help me find my model number


Circulation and Drain Pump Motor

If the dishwasher is loud during operation, and the noise is a continuous drone similar in speed to the motor sound, it's likely that the circulation and drain pump motor bearings have failed. Once this happens the motor will have to be replaced, the bearings are not repairable.


Enter your model number to see parts for your dishwasher.
Help me find my model number


Water Inlet Valve

The water inlet valve is an electrically controlled water valve. When it is new, the water inlet valve is very quiet. Over time, the diaphragm inside the valve deteriorates and deforms. This deformation interacts with the water rushing in and can cause a loud vibration, buzzing, squealing or other noises. If the dishwasher is loud during the filling cycle, replacing the water inlet valve may solve the problem.

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Loud Squeal: Clean and Rinse Cycles


Just on a whim i would say the bearings in the motor are worn.Any leaks?It's also possible that some broken glass went through the screen and into the pump motor if any glass has been broken.

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Whirlpool Dishwasher Model: GU2500XTPQ3 making loud whining noise


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