Why Is My Garbage Disposal Not Working?

A garbage disposal that isn’t working at all is usually caused by a tripped internal reset button, a tripped circuit breaker, a jammed impeller, or a failed motor. Most garbage disposal issues fall into one of two categories: the unit is completely silent, or it hums without spinning, and each points to a different likely cause.

Common Reasons Your Garbage Disposal Isn’t Working

Tripped Internal Reset Button

Most disposals have a small reset button on the bottom of the unit that trips as a safety measure when the motor overheats. This is one of the most common and easiest fixes for a disposal that’s suddenly gone silent.

Tripped Circuit Breaker

If the disposal is on a dedicated circuit, a tripped breaker will cause the unit to show no signs of life, including no humming sound when switched on.

Jammed Impeller

Food particles, bones, or fibrous material like celery can jam the impellers (the spinning components that grind waste). When jammed, the motor may hum but the disposal won’t actually turn.

Failed Motor

Over time, or due to a jam that wasn’t cleared promptly, the motor itself can burn out, leaving the unit completely unresponsive even after resetting the breaker and reset button.

Loose Electrical Connection

A loose wire connection under the sink or within the disposal’s wiring can cause intermittent or complete power loss, separate from a tripped breaker.

Disposal Switch Failure

The wall switch used to operate the disposal can wear out over time, preventing power from reaching the unit even when everything else is functioning correctly.

What You Can Check Yourself

• Locate and press the small red reset button on the bottom of the disposal unit
• Check your home’s breaker panel for a tripped breaker
• If the unit hums but doesn’t spin, use a disposal wrench or an Allen wrench in the bottom center hole to manually rotate and free a jam (with power off)
• Confirm the wall switch is functioning by testing other explanations first

When You Should Call an Appliance Repair Technician

If resetting the unit and clearing a potential jam doesn’t restore function, or if the disposal is completely silent even after these steps, the motor or wiring likely needs professional inspection and repair.

Garbage Disposal Repair in Lake Zurich, IL

We help homeowners across Lake Zurich and the Northwest Chicago Suburbs get non-working garbage disposals back in service quickly and safely. Schedule Garbage Disposal Repair today.

Frequently Asked Questions

Is it safe to reach into the disposal to clear a jam?

No — always turn off power at the breaker first, and use a disposal wrench or long-handled tool rather than reaching in with your hand.

Why does my disposal hum but not spin?

This is a classic sign of a jammed impeller, which can often be freed using the manual reset method with a wrench.

How often does the internal reset button trip?

It varies, but frequent tripping can indicate the disposal is being overworked or there’s an underlying motor issue worth having checked.

Is a completely silent disposal always a motor failure?

Not necessarily — it’s worth checking the breaker and reset button first, since these simpler causes are common and easy to rule out.

Should I avoid putting certain foods down the disposal to prevent jams?

Yes — fibrous foods like celery, as well as bones and large amounts of grease, are common causes of jams and should generally be avoided.