Why is Garbage Disposal Humming But Not Working? How to Fix Garbage Disposal Not Working?

Why Is My Garbage Disposal Humming?

When you hear a humming noise coming from your garbage disposal, it indicates that the blades are not rotating as they should. Several factors can cause this humming sound, including a blockage, an overheated motor, or even a physical obstruction like a fork or spoon accidentally dropped into the disposal.

Garbage disposals are commonly installed in households to efficiently break down soft and liquid food waste, including citrus fruit peels, which can also contribute to a fresh scent in the disposal unit.

However, it's crucial to ensure that the garbage disposal is in proper working condition before disposing of any items. Taking this precautionary step helps prevent damage to the blades or motor, ensuring the longevity and optimal performance of your garbage disposal.

Why is Garbage Disposal Humming but Not Working?

Clogged Motor

When your garbage disposal emits a humming sound but fails to turn, it indicates a power supply is reaching the appliance, but it is not functioning properly. In most cases, a clog or jam in the motor is to blame. Follow these steps to resolve the issue:

• Begin by ensuring your safety by unplugging the unit and turning off the power to the disposal at the breaker.
• Locate the hex Allen wrench and insert it into the breaker socket at the bottom of the unit. Note that lower-end models may not have this feature.
• Move the wrench back and forth to free the flywheel and encourage it to rotate. This action should dislodge any obstructions causing the impeller blades to jam.
• If you don't have an Allen wrench or can't find the socket, you can use a short broom. Insert the broom handle down the drain into the garbage disposal, pressing against an impeller blade. Manually move the blade forward and backward to dislodge the foreign object. Once freed, remove the broom.
• Restore power and turn on the disposal to check if it is now functioning properly.
• If these steps do not resolve the issue, it is advisable to contact a plumber for further assistance.

Tripped GFCI or Disposer

A humming garbage disposal that does not turn can also be caused by a tripped GFCI outlet or a tripped disposer unit. In such cases, no electricity reaches the motor, resulting in a humming noise. Follow these steps to address the issue:

• Check if the GFCI outlet has tripped. Press the reset button on your GFCI switch, and if applicable, press the reset button on the garbage disposal unit as well. Then, test the operation of the disposal. The reset button for the garbage disposal is typically located at the bottom of the appliance. If there is no power, you won't hear any sound.
• If the problem persists and there is still no power, it is recommended to seek professional assistance from a plumber.

Faulty Motor

• When garbage disposal emits a humming sound without turning, it could indicate a faulty motor. While the motor may be repairable, many homeowners choose to replace the entire appliance at this stage. InSinkErator is the only company that repairs motors, and it must be within the warranty period. Most disposals have a lifespan of around 10 years, so if you're close to that timeframe, upgrading to a new model might be the best solution.

Taking Care of Your Garbage Disposal

• To avoid humming garbage disposal and other issues, proper maintenance is crucial. Even if it's not necessary for waste removal, run the garbage disposal on a daily basis. The motor requires regular use to prevent problems from arising. Also, ensure that it receives enough water when in use. Always leave the water running for an additional minute longer than you think is necessary.

Garbage Disposal Repair and Replacement

• If your garbage disposal is humming but not turning and you're unable to determine the cause, it is advisable to stop using the unit and contact a plumber for repairs. B&W Plumbing, Heating, Cooling, and Drains offer garbage disposal repair and replacement services when a new unit is needed. Feel free to reach out to schedule service.

How to Fix Garbage Disposal Not Working?

Foreign Object Caught in Blades

If you notice a humming noise coming from your garbage disposal but it fails to spin, it's possible that something is stuck in the blades. Common culprits include silverware, plastic bags, and food scraps. Follow these steps to address the issue:

• Begin by unplugging the garbage disposal and use a flashlight to inspect the inside. If you spot an object caught in the blades, try to dislodge it using a wooden spoon or another blunt object.
• Avoid putting your hand inside the disposal to prevent injury from the sharp blades. Alternatively, you can use an Allen wrench by inserting it into the bottom hole of the garbage disposal unit.
• Twist the wrench back and forth until the object becomes loose. If these methods don't work, it's advisable to seek professional assistance.

Malfunctioning Motor

When your garbage disposal emits a humming sound but fails to function, it's likely due to a malfunctioning motor. Factors such as frequent usage, misuse, or improper installation can contribute to motor issues. Follow these steps to troubleshoot:

• Turn off the disposal, unplug it, and wait for a few minutes. Then, plug it back in and turn it on to see if the motor resets.
• If the motor still doesn't work, it may need to be replaced. Consider contacting a professional for further assistance.

Clogged Drain

If your garbage disposal is humming and you have ruled out other potential causes, a clogged drain may be the culprit. Food scraps, grease, soap scum, and toothpaste are common causes of clogs. Try the following steps to address the issue:

• Clear the clog by using a plunger or a plumbing snake to dislodge the obstruction.
• Pouring boiling water down the drain can also help clear a clog.
• If the clog is severe, detach the drain pipe and clean it out.
• If these methods fail to resolve the humming, it's advisable to contact a plumber for further assistance.

Tips to Prevent a Humming Garbage Disposal

To maintain a smoothly running garbage disposal and prevent humming, it's important to keep the following tips in mind:

• Avoid disposing of items that shouldn't go into the garbage disposal, such as silverware, plastic bags, or large food scraps. These items can cause the blades to get stuck and result in humming. Additionally, avoid disposing of fat and grease, as they can lead to clogs and jams.

• Use an adequate amount of water when running the disposal. Sufficient water flow helps to keep the motor cool and prevents overheating, which can contribute to humming issues.

• Before activating the disposal, ensure that the drain is clear of debris. Remove any visible obstructions to allow the disposal to function properly.

• Break up large food scraps into smaller pieces before disposing of them. This practice helps prevent the blades from getting overloaded and minimizes the chances of clogs or jams that can cause humming.

• Regularly clean the garbage disposal to keep it in good condition. Use a mixture of vinegar and baking soda to remove built-up grease and food particles. Simply pour the mixture down the drain, let it sit for a few minutes, and then flush it with hot water.

By following these tips, you can help prevent your garbage disposal from humming and ensure its smooth operation. However, if the humming persists despite these precautions, it's important to promptly troubleshoot and fix the problem to prevent further damage.

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