Your garbage disposal suddenly goes silent, and the first instinct is to call a plumber. Before you spend $150 on a service call, check the garbage disposal reset button on the bottom of the unit. This small red or black button is a built-in circuit breaker that trips when the motor overheats or jams, and pressing it often brings the disposal back to life in seconds. Here is everything you need to know about why it trips and how to fix it.
Where to Find the Reset Button
Flip on a flashlight and look at the very bottom of the disposal canister under your sink. On most InSinkErator models, the reset button is a small red button roughly 1/4 inch in diameter centered on the base. Waste King and Moen units typically have a similar button, sometimes black, located in the same spot. If the button is popped out noticeably from the surface, the disposal has tripped and needs resetting.
Why the Reset Button Trips
The button functions as a thermal overload protector. When the motor draws too much current, the internal temperature spikes and the breaker pops to prevent permanent damage. Common triggers include:
- Jammed grinding chamber: A bone fragment, utensil, or fibrous vegetable like celery wraps around the impellers and stalls the motor
- Overloading: Pushing too much food waste into the chamber at once forces the motor to work harder than its rated capacity
- Running without water: Water acts as a coolant; dry operation causes rapid overheating
- Electrical issues: A voltage drop or faulty wiring can cause the motor to draw excessive current
Step-by-Step Reset Process
- Turn off the wall switch that controls the disposal and unplug the unit if accessible. Safety first
- Wait 3-5 minutes for the motor to cool down completely
- Use a flashlight to look into the drain opening and check for visible obstructions like silverware, bottle caps, or large food debris
- If you see a jam, use tongs or pliers (never your hand) to remove the obstruction
- Insert an Allen wrench (1/4 inch hex key) into the hole on the bottom center of the unit and rotate it back and forth to manually free the flywheel
- Press the garbage disposal reset button firmly until it clicks and stays flush with the housing
- Turn on cold water, then flip the wall switch to test
When the Reset Button Will Not Stay In
If the button pops back out immediately after you press it, the motor has not cooled sufficiently. Give it another 10-15 minutes before trying again. Persistent tripping after cooling suggests a deeper problem: a seized motor bearing, failed capacitor, or internal wiring fault. At that point, the disposal likely needs professional repair or replacement.
Units older than 8-10 years with recurring reset issues are usually not worth repairing. A new 3/4 HP disposal costs $150-$250 installed, which is comparable to a single motor repair bill.
Preventing Future Trips
Always run a strong stream of cold water before, during, and for 15 seconds after grinding. Feed waste gradually rather than dumping an entire plate at once. Keep fibrous materials like artichoke leaves, corn husks, and onion skins out of the chamber entirely since they wrap around the impellers and stall the motor faster than any other food type.
Monthly maintenance helps too. Grind a cup of ice cubes to knock off stuck-on residue, and follow with a handful of baking soda and a splash of vinegar to neutralize odors. A well-maintained disposal rarely trips its overload protector.
Reset Button vs. Circuit Breaker
Do not confuse the disposal’s built-in reset button with the circuit breaker in your electrical panel. The reset button protects the motor specifically. The circuit breaker on the panel protects the entire electrical circuit feeding the disposal, dishwasher, and sometimes other kitchen outlets. If both the reset button and the panel breaker trip simultaneously, you may have a short circuit in the disposal’s wiring that requires an electrician.
Common Mistakes When Resetting
One frequent error is pressing the reset button while the wall switch is still on. This can cause the motor to surge and trip again immediately. Always confirm the switch is off before pressing reset. Another mistake is skipping the Allen wrench step when a jam is present. Pressing reset without clearing the obstruction just forces the motor into the same stalled condition, and repeated stalling can burn out the windings permanently. Finally, avoid using hot water when testing after a reset. Cold water solidifies any grease in the chamber so the impellers can chop it up, while hot water liquefies grease that later re-solidifies and coats the drain line.
When to Replace Instead of Reset
A disposal that trips weekly despite proper use is sending a clear signal. Motors lose efficiency over time as bearings wear and insulation degrades. If you notice any of these signs alongside frequent resets, start shopping for a replacement:
- Persistent humming without spinning when powered on
- Water leaking from the bottom housing
- Visible rust or corrosion on the grinding components
- The unit is more than 10 years old
