Garbage Disposal Humming But Not Working

May 28, 2024

It's a common scenario: your garbage disposal emits a frustrating hum but doesn't grind up food waste. That humming noise is a clear sign that the disposal unit is receiving power, but something is preventing the blades from spinning as they should.

Rest assured, this guide is your go-to solution for humming but non-functional garbage disposal. We've meticulously crafted a comprehensive guide to help you diagnose and fix this problem. Whether it's a jammed object, a reset button issue, or a more complex mechanical failure, we'll guide you through the most common causes and provide step-by-step solutions.

Understanding the Humming Sound

When your food disposal system is humming but not working, it's usually a sign that something is amiss. The humming noise indicates that the motor receives power but cannot turn the blades. This often happens because of a jam or a motor issue. Here are some common causes of the humming sound:

• Jammed Disposal Blades: Food debris, utensils, or other objects can get stuck in the disposal, preventing the blades from rotating. This is the most common cause of the humming sound.
• Overheated Motor: If the disposal motor overheats, it might trigger a thermal overload, causing the unit to hum without functioning correctly. This can happen if the disposal has been running for too long or if it's been overworked.
• Electrical Issues: Problems with the electrical supply, such as a tripped circuit breaker or a blown fuse, can cause the disposal to hum without working.

Safety First: Precautions to Take

Before attempting any troubleshooting or repairs on your garbage disposal, it's crucial to prioritize safety. Working with electrical appliances and sharp blades can be hazardous, so taking the right precautions is essential. Follow these steps to ensure your safety:

Disconnect the Power

Always start by turning off the garbage disposal's power. Unplug the unit from the outlet under the sink. If the disposal is hardwired, switch off the circuit breaker that controls it to cut off the electrical supply.

Use a Flashlight

Make sure you have adequate lighting to see clearly inside the disposal. Use a flashlight to inspect the interior and locate any visible blockages or objects.

Avoid Using Your Hands

Never put your hands inside the garbage disposal. The blades are extremely sharp and can cause serious injury, even when the unit is turned off. Use long-handled tools, such as tongs or pliers, to remove debris.

Wear Protective Gear

Wear safety gloves to protect your hands from sharp edges or debris lodged inside the disposal. Protective eyewear is also recommended to shield your eyes from any splashes or flying particles.

Follow the Manufacturer’s Instructions

For any additional safety instructions or troubleshooting tips provided by the manufacturer, refer to the user manual for your specific garbage disposal model.Wear safety gloves to protect your hands from sharp edges or debris lodged inside the disposal. Protective eyewear is also recommended to shield your eyes from any splashes or flying particles.

Check for Reset Button

Many garbage disposals have a reset button on the unit's bottom. Before proceeding with any manual interventions, try pressing the reset button to see if it resolves the issue.

Common Causes and Solutions

When your garbage disposal is humming but not working, there are several common causes to consider. Each cause has its own specific solution, which can help you get your disposal back to working condition. Let’s take a look at the common causes and solutions:

Jammed Disposal Blades

Cause: One of the most frequent issues is jammed disposal blades. Food scraps, bones, utensils, or other objects can become lodged between the blades, preventing them from spinning.

Solution:

• Turn Off the Power: Ensure the disposal is disconnected from power (unplugged or with the circuit breaker off).
• Inspect the Disposal: Use a flashlight to look inside the disposal for any visible obstructions.
• Manually Turn the Blades: Insert a hex key or an Allen wrench into the hole at the bottom of the disposal. Turn it back and forth to rotate the blades and dislodge any items manually.
• Remove the Debris: Use long-handled pliers or tongs to remove the jammed object carefully. Remember, never use your hands.

Overheating and Resetting the Unit

Cause: If the disposal has overheated, it may stop working and only produce a humming sound. This can occur if it has been running for an extended period or if it has been overloaded.

Solution:

• Turn Off the Power: Ensure the disposal is disconnected from power.
• Allow the Disposal to Cool: Give the unit time to cool down, typically about 10-15 minutes.
• Locate the Reset Button: Find the reset button on the bottom of the disposal unit.
• Press the Reset Button: Push the reset button. You should hear a click, indicating the disposal has been reset.
• Restore Power and Test: Reconnect the power and test the disposal to see if it works correctly.

Electrical Issues

Cause: Sometimes, the issue may be related to electrical problems, such as a tripped circuit breaker, blown fuse, or loose wiring.

Solution:

• Check the Power Source: Ensure the disposal is plugged in securely. If hardwired, check that the wires are correctly connected.
• Inspect the Circuit Breaker: Go to your home's electrical panel and see if the circuit breaker for the disposal has tripped. If it has, reset it.
• Replace Fuses: If your home uses fuses, check for a blown fuse and replace it if necessary.
• Press the Reset Button: Push the reset button. You should hear a click, indicating the disposal has been reset.
• Test the Outlet: If the disposal is plugged into an outlet, test it with another appliance to ensure it functions correctly.

When to Call a Professional

While many garbage disposal issues can be resolved with basic troubleshooting, there are times when professional help is necessary. Knowing when to call a professional can save you time, prevent further damage, and make sure the job is done safely and correctly. Here are some signs that indicate it's time to seek expert assistance:

Persistent Humming or Grinding Noises

• Issue: If your garbage disposal continues to hum or makes unusual grinding noises even after you’ve tried to clear jams and reset the unit, there might be a more serious mechanical problem.
• Professional Help: A technician can diagnose and repair internal issues, such as worn-out bearings or motor problems, that are beyond basic troubleshooting.

Leaking Disposal Unit

• Issue: Leaks can occur in various parts of the garbage disposal, such as the sink flange, dishwasher connection, or discharge drainpipe. Identifying the exact source of the leak can be challenging.
• Professional Help: A professional plumber can locate and fix leaks efficiently, ensuring all connections are secure and any damaged parts are replaced.

Electrical Problems

• Issue: If you suspect electrical problems, such as a non-functional power switch, frequent tripping of circuit breakers, or signs of faulty wiring, it’s best not to attempt DIY repairs.
• Professional Help: An electrician can safely address wiring problems, replace faulty components, and ensure your garbage disposal is adequately connected to your home’s electrical system.

Frequent Resets Needed

• Issue: If you frequently press the reset button to get the disposal working, this could indicate an underlying problem that needs professional attention.
• Professional Help: A technician can inspect the unit to identify and fix recurring issues, ensuring your garbage disposal operates reliably.

Preventative Maintenance Tips

Proper garbage disposal maintenance can prevent many common issues and extend its lifespan. Following these preventative maintenance tips can help you keep your disposal running smoothly and avoid the inconvenience of unexpected breakdowns.

Regular Cleaning

• Tip: Clean your garbage disposal regularly to prevent food particles and odors buildup.
• Method: To clean the disposal blades, use a mixture of ice cubes and rock salt. Run the disposal with cold water, then add the ice and salt and let it grind for a few seconds.
• Alternative: Pour a small amount of baking soda into the disposal, followed by vinegar. Allow it to fizz briefly, then rinse with hot water.

Avoid Hard or Fibrous Foods

• Tip: Be mindful of what you put into your garbage disposal to prevent jams and damage
• Reason: Hard items like bones, fruit pits, and shells, as well as fibrous foods like celery, corn husks, and onion skins, can ruin your disposal. Cut larger food scraps into smaller pieces and feed them into the disposal gradually with running cold water.

Run the Disposal Regularly

• Tip: Run your garbage disposal regularly, even if you don’t have food waste to grind.
• Reason: Regular use prevents rust and corrosion, keeping all parts in good working order. It also helps clear any leftover food particles in the unit.

Avoid Chemical Drain Cleaners

• Tip: Do not use chemical drain cleaners in your garbage disposal.
• Reason: These chemicals can damage the disposal’s blades and internal components. Instead, use natural cleaning solutions like the baking soda and vinegar method mentioned earlier in this blog.

Featured Food Disposers at Standard

KitchenAid 1 HP Continuous Feed Garbage Disposal (KBDS100T)

Why We Like It:

The KitchenAid 1 HP Continuous Feed Garbage Disposal (KBDS100T) offers powerful performance with its 1 horsepower motor, capable of handling even the toughest food waste. The continuous feed system allows for convenient, uninterrupted use, and the sound insulation technology ensures quieter operation. With durable stainless steel grinding components and an overload protection feature, this disposer is built for reliability and long-lasting service.

Whirlpool 1/3 HP In-Sink Disposer (GC1000PE)

Why We Like It:

The Whirlpool 1/3 HP In-Sink Disposer (GC1000PE) combines efficiency and practicality. Its 1/3 horsepower motor is perfect for light to moderate use, efficiently grinding food waste into small particles for easy disposal. The compact design is ideal for smaller kitchens, and the stainless steel swivel impellers reduce jamming. Easy to install and maintain, this disposer is a great addition to any home.

Frigidaire 1/3 HP Corded Disposer (FF03DISPC1)

Why We Like It:

The Frigidaire 1/3 HP Corded Disposer (FF03DISPC1) is a reliable and efficient choice for everyday kitchen use. With its 1/3 horsepower motor, this disposer provides powerful grinding capabilities while maintaining a compact design that fits easily under most sinks. Its corrosion-resistant stainless steel grinding components ensure durability and long-lasting performance. Also, the easy-to-install corded design makes setup quick and hassle-free.

GE 3/4 HP Continuous Feed Garbage Disposer (GFB760N)

Why We Like It:

The GE 3/4 HP Continuous Feed Garbage Disposer (GFB760N) is designed for high performance and convenience. The 3/4 horsepower motor delivers robust grinding power to handle tough food waste, while the continuous feed system allows you to add waste without stopping the unit. It features stainless steel grinding components for enhanced durability and a sound reduction system for quieter operation. This disposer is a great choice for busy kitchens.

Find the Best Brands at Standard TV & Appliance

Dealing with a humming but non-functional garbage disposal can be a hassle, but understanding the common causes and solutions can help you address the issue effectively. Remember to prioritize safety and consider when it might be best to call a professional. Regular maintenance can also go a long way in preventing problems and extending the life of your disposal.

Contact us and explore the best garbage disposals and trash compactors for sale at Standard TV & Appliance! We also offer dishwashers from top brands, including Bosch dishwashers, GE Profile dishwashers, Frigidaire dishwashers, Whirlpool dishwashers, KitchenAid dishwashers, and more. If you have any questions, visit one of our store locations in Beaverton, Bend, or Portland, Oregon.

Related readings:

• How to Clean a Smelly Dishwasher: Eliminating Residue and Odors
• The Must-Have Dishwasher Features for Modern Living
• Should You Buy a KitchenAid Dishwasher?

Frequently Asked Questions About Dishwasher Repair

Why is my garbage disposal making a noise?

If your garbage disposal is making noise and not working, it likely indicates that the blades are jammed, the motor has overheated, or there is an electrical issue. Check for any blockages inside the disposal and clear them. Press the reset button to see if the motor has overheated. Ensure the unit is receiving power by checking the outlet and circuit breaker.

How do I get my garbage disposal to spin again?

First, turn off the power to get your garbage disposal to spin again. Insert a hex key into the bottom of the disposal and manually turn it back and forth to free any jams. Check for obstructions inside the disposal and remove them. Press the reset button if the disposal has overheated. Restore power and test the unit to see if it spins.

Can I use chemical drain cleaners in my garbage disposal?

No, using chemical drain cleaners in your garbage disposal is not recommended. These chemicals can damage the disposal's blades and internal components. Instead, use natural cleaning solutions like baking soda and vinegar, followed by hot water, to clean and deodorize your disposal safely.