How To Fix a Garbage Disposal That’s Humming But Not Working in 5 Simple Steps

A garbage disposal is a crucial kitchen workhorse designed to grind up food scraps and prevent clogged drains. There are many downsides to a garbage disposal not working, such as more difficult cleanup and unpleasant odors.

If your garbage disposal isn’t functioning properly, there are a few solutions that can help restore the performance and efficiency of the unit. Discover the most common garbage disposal issues, how to fix them, and when to call a professional.

1. Check the Outlet

The first step in diagnosing a broken garbage disposal is to check the outlet. It may seem obvious, but sometimes the problem is as simple as a loose plug or a tripped circuit.

Begin by unplugging the disposal from the electrical outlet and then plugging in another appliance to see if the outlet functions correctly. If the outlet is operational and your disposal is still not working, proceed to step two.

Note: If your garbage disposal is plugged into a GFCI (ground-fault circuit interrupter), check to see if the outlet has been tripped. A GFCI outlet has been tripped when the red reset button is raised or out. Simply reset the outlet by pushing in the red reset button.

2. Reset the Garbage Disposal

Most garbage disposals are equipped with a reset button, usually located on the bottom of the appliance. If your disposal stopped working due to an overload, jam, or other minor issue, pressing this reset button can often resolve the problem:

• Check that the disposal is powered off and unplugged for safety.
• Find the reset button on the bottom of the unit and press it. If it clicks or doesn’t pops back out, this indicates a successful reset.
• Plug the disposal back in and power it on. Be cautious and avoid putting your hands or any foreign objects into the disposal during this process.

If the reset doesn't work and the unit remains unresponsive, you may need to move on to more advanced troubleshooting steps. This can help you identify and address the underlying issue causing your garbage disposal to malfunction.

3. Look for Jams or Leaks

When dealing with jams or leaks in a garbage disposal, safety should always be your top priority.

Jams can be caused by foreign objects or debris obstructing the grinding mechanism. To check for jams:

• Start by ensuring the disposal is turned off and unplugged.
• Shine a flashlight into the disposal to locate any foreign objects or debris that may be causing a blockage.
• If you spot something, use long-handled pliers to carefully extract it, avoiding any direct contact with your hands.

Leak detection requires a visual inspection of the disposal's connections. To check your garbage disposal for leaks:

• Make sure the unit is off and disconnected from power.
• Check the seals, connections, and pipes for signs of water leakage.
• If you find a leak, it's best to consult a professional plumber or a service professional, as attempting to fix a leak without the right knowledge and tools can lead to further damage or personal injury.

It's crucial to remember that tampering with a garbage disposal can be hazardous. In situations where the solution is too complex or dangerous, contacting a garbage disposal repair service is strongly recommended to minimize any risks.

4. Check the Main Breaker Box

Is your garbage disposal not turning on at all? Check for tripped circuit breakers in your home’s main breaker box. If you find a breaker in the "off" position, flip it to the "on" position to restore power to the disposal and see if it resolves the issue.

5. Contact a Professional

If you've exhausted all the previous steps and your disposal still isn’t functioning properly, it's a clear sign that the issue may be more complex — or potentially dangerous.

At this point, attempting to fix a serious issue — such as a motor malfunction or a severe clog — without the necessary knowledge and tools could lead to further damage or injury. A service professional has the expertise and equipment to diagnose and repair the problem safely and efficiently.

By reaching out to a professional, you can ensure the long-term functionality of your garbage disposal and often save yourself from more extensive and costly repairs in the future. Mr. Appliance®’s service professionals can provide timely garbage disposal repairs or replacements so you can get back to enjoying the heart of your home.

Common Garbage Disposal Problems

Your garbage disposal has a limited number of components that work together harmoniously, but if one or more should become stuck, clogged, or damaged, you'll need to determine the source of the issue to resolve it. The most common garbage disposal problems include water leaks, clogs, a damaged or broken motor, and a worn-out gasket.

Water Leaks

Damaged seals, loose connections, or cracked pipes can lead to water leakage around the disposal. The most common areas for leakage to occur are:

• Sink flange
• Dishwasher connection
• Discharge drainpipe

If you have the appropriate tools, you can try tightening the connections at any of these points after disconnecting the power to the unit at the breaker box.

Clogs

Accumulated food scraps, grease, or other debris in the disposal or drain pipe can cause clogged garbage disposals. These blockages lead to slow drainage, foul odors, and malfunctioning disposal.

To access and clear the clog, you will likely need to disassemble the drain trap and discharge pipe to remove the waste buildup. You should perform regular maintenance, such as running cold water while operating the disposal and avoiding putting hard or fibrous materials inside, to prevent clogs and keep your disposal running smoothly.

Damaged or Broken Motor

A damaged or broken motor is a significant issue that can render a garbage disposal inoperative. Signs of motor problems include:

• Garbage disposal humming but not working
• Frequent overheating
• Complete failure to start

If you’re experiencing any of the above, it's best to contact a trusted service professional, as motor repairs can be complex and potentially dangerous for inexperienced individuals. In some cases, replacing the motor may be the most cost-effective solution.

Worn-Out Gasket

Over time, the rubber gasket that seals the disposal unit to the sink may degrade or develop cracks, allowing water to escape. Replacing the gasket is a relatively straightforward repair, but it's essential to ensure a proper seal to prevent future leaks and water damage.

Types of Garbage Disposals

There are two primary types of garbage disposals: batch feed and continuous feed disposals. While both serve the same purpose of grinding food waste, they operate differently with their own advantages and considerations.

Batch Feed

Batch feed disposals operate by loading a batch of food waste into the unit, sealing it with a cover, and then activating the disposal. The cover is a safety measure, ensuring you can only turn on the unit when it's securely sealed to reduce the risk of accidental activation.

Pros:

• Less likely to cause accidents
• Quiter
• Less prone to objects accidentally falling in and jamming

Cons:

• Less convenient for processions large volumes of waste
• Slightly more expensive

Continuous Feed

Continuous feed garbage disposals are the more common and traditional type of waste disposal units. These disposals operate continuously as long as they are switched on, allowing you to feed food waste into the unit while it is running. You will often control these with a wall switch or an air switch, and they offer a more efficient and convenient method for disposing of waste than batch feed disposals.

Pros:

• More efficient at disposing of large amounts of food waste
• Generally more budget-friendly
• Better suited for large households with heavy kitchen use

Cons:

• Higher risk of accidental activation
• This may be a concern in households with children
• Noisy

What If My Garbage Disposal Is Humming But Not Working?

If you find your garbage disposal humming, the inner flywheel is likely jammed, or the motor bearing has ceased.

When this occurs, it is imperative that you turn off the unit quickly to prevent further damage from the garbage disposal humming but not spinning. Turn off the power to the unit at the breaker and wall switch to prevent injury before attempting to free the flywheel using any of the methods below:

1. Take the offset wrench that came with the disposal and place it inside the flywheel turning hole at the base of the unit.
2. Turn the wrench clockwise until you feel the flywheel turn freely.
3. Alternatively, insert a wooden spoon handle into the drain opening and try to dislodge the flywheel. NEVER insert your hand into the garbage disposal.
4. You can also shine a bright light into the drain opening to see if any debris, such as a bone, has caused a jam, and remove the object using tongs or pliers.
5. Once you find a resolution for why your garbage disposal just hums, flip the breaker and push the reset button at the base of the disposal before turning it on.

Call Mr. Appliance for Garbage Disposal Repair

It's crucial to promptly schedule garbage disposal repair to maintain a smoothly functioning kitchen. Whether it's a simple jam, an electrical glitch, or a more complex motor problem, understanding the common causes and troubleshooting steps can save you time and money.

But remember that a malfunctioning garbage disposal may also be a symptom of a larger plumbing problem, so seeking professional assistance is often the wisest course of action to ensure your kitchen runs efficiently and your home remains free from potential plumbing issues.

Schedule service with Mr. Appliance today to get your garbage disposal back in working order quickly and efficiently.

This article is intended for general informational purposes only and may not be applicable to every situation. You are responsible for determining the proper course of action for your home and property. Mr. Appliance is not responsible for any damages that occur as a result of this blog content or your actions. For the most accurate guidance, contact the Mr. Appliance location nearest you for a comprehensive, on-site assessment.