Pressing the small red button on the bottom of the unit resets the thermal overload protector, and inserting a 1/4-inch Allen wrench into the hex socket clears a jammed flywheel so power can be restored. Most disposals, from a basic Badger 5 to a heavy-duty InSinkErator Evolution Compact, ship with that built-in overload, and the full reset takes under five minutes once power is safely cut.
You’ll find brand-specific reset button locations, an electrical-safety protocol that protects you from a live circuit, and a jam-clearing procedure for both hex-socket and tool-free disposals. The guide also covers what to inspect when the reset button keeps tripping and how to stop jams before they start.
Why a Garbage Disposal Suddenly Stops Working
Two distinct failure modes sit behind almost every dead disposal, and misdiagnosing them wastes time. The first is an electrical trip, the second is a mechanical jam, and they each demand a different fix.
The Overload Protector Trips to Save the Motor
A small thermostat-style switch tucked inside the motor housing snaps open the moment current draw spikes or internal temperatures climb too high, cutting power before the windings burn out. Cutting power protects the windings from burning out, which is the most expensive failure mode on a disposal. Once the unit cools for a few minutes, pressing the red or black reset button on the bottom restores the circuit and the unit works again.
A Jammed Flywheel Mimics an Electrical Failure
Disposal models like the InSinkErator Badger 5, Waste King L-3300, and Moen GX Series use a spinning flywheel with lugs to throw food against the grind ring. When a chicken bone, fruit pit, or stringy celery stalk wedges between the lugs and the ring, the motor stalls. The audible result is a loud hum from a stationary motor that draws current without spinning. Pressing reset will not free it, because the jam, not the electrical circuit, is the problem.
Other Things That Look Like a Disposal Failure
A tripped kitchen GFCI outlet in the cabinet, a flipped breaker in the main panel, and a faulty wall switch can all mimic a bad disposal. Checking power at the source before assuming the unit itself is broken prevents an unnecessary repair. If the switch on the wall does nothing, no hum, no click, the electrical path is open upstream, not inside the disposal.
Electrical Safety Before Touching Anything
Skipping safety prep turns a five-minute fix into a trip to the ER or a fried motor. The grind chamber holds sharp impellers and the wiring carries full household current, so cut the power before any hand or tool goes near the unit.
Kill Power at the Breaker First
Flip the disposal breaker in the kitchen panel to OFF, not just the wall switch, because a wall switch only interrupts one leg of the circuit. Confirm the breaker matches the disposal label, often labeled “DISPOSAL” or “GARBAGE DISPOSAL,” and that no other appliances share that circuit. A disposal wired to a shared 15-amp breaker with the dishwasher is common in older homes.
Verify the Unit Truly Has No Power
Flip the wall switch and listen. Silence confirms the breaker killed the line. For a disposal that plugs into an under-sink outlet rather than hardwiring, unplug it directly from the GFCI receptacle behind the cabinet. Test the GFCI by pressing its TEST button, then RESET, to confirm the outlet itself works before assuming the disposal is dead.
Keep Hands and Tools Away From the Chamber
Never reach into the grind chamber, even with the power off. Bones, glass shards, and small utensils lodge in the impellers and can cut skin on contact. Use tongs or long-handled pliers to pull visible debris from the splash guard opening, and reach under the sink only with the breaker off.
Tongs and pliers only handle the easy debris; deeper jams call for a different entry point entirely.
Locating the Reset Button on Common Disposal Models
The reset button almost always lives on the underside of the motor housing, but the exact spot varies by brand and series. Knowing where to look saves the flashlight fumbling that turns a quick fix into an under-sink archaeology project.
Most Units Put the Button Under the Motor Base
On InSinkErator Badger, Waste King, and GE disposals, the reset button sits flush on the bottom of the unit, often covered by a small red or black rubber boot. The button is roughly the size of a pencil eraser and is usually centered on the housing’s underside. Crouch, shine a flashlight upward, and look for the colored boot.
Some Models Bury the Button Deeper
Evolution-series InSinkErators and KitchenAid KCM models tuck the button closer to the center of the base, sometimes recessed behind the mounting ring. Run a finger along the underside until you feel a small raised dome. Continuous-feed and batch-feed models share the general location, but batch-feed units (which load from the top with a stopper) often hide the button beneath a removable plate.
Handling a Stuck or Recessed Reset Button
Pry the rubber cover back gently with a flathead screwdriver if it has fused to the housing over time. Do not pry the button itself, as the internal switch can snap if forced sideways. A flashlight and patience beat muscle every time on a recessed reset.
Pressing Reset and Clearing a Jam With an Allen Wrench
With the breaker confirmed dead and the button located on the bottom of the housing, the actual fix takes less than five minutes. Press the reset, restore power, and listen for the result. If it does not spin, drop the Allen wrench in.
Press the Reset Button First
Press the button firmly until it clicks and stays depressed, which usually takes a deliberate thumb push. Restore breaker power, run cold water at full flow, and flip the wall switch. Normal grinding sound and clear drainage mean the overload has cleared and the fix is done. Silence or a hum means a jam is still holding the flywheel.
Unjam the Flywheel Through the Hex Socket
Insert a 1/4-inch Allen wrench (a standard hex key, available at any hardware store for under three dollars) into the hex socket on the bottom center of the unit. Rock the wrench back and forth in both directions to free the lodged debris. Resistance will release when the flywheel rotates freely, then spin the impellers by hand through the drain opening to confirm.
For a Waste King or InSinkErator without an Allen wrench on hand, a wooden broom handle inserted into the drain opening and levered against the impeller can dislodge softer obstructions like vegetable peels or coffee grounds. Once the flywheel spins freely by hand, press reset again, restore power, and run water through the unit to confirm normal operation.
With the jam cleared by hand, power can return and the real test begins.
Restoring Operation and Testing the Unit
A successful reset is not complete until the disposal grinds cleanly under load. A quick test cycle confirms the fix and surfaces any leftover problems before they trip the unit again tomorrow.
Run Cold Water and Listen Closely
Flip the wall switch on for 15 to 30 seconds while cold water flows at full pressure through the sink. A smooth whir followed by steady drainage means the overload cleared and the flywheel spins freely. Rattling, repeated humming, or water backing up into the second sink bowl means the jam is not fully cleared or a drain clog downstream is blocking flow.
Scour the Grind Chamber With Ice
Pour a small bowl of plain ice cubes down the drain while the water and disposal run. The ice scours residual debris from the grind ring and impellers and helps sharpen the lugs on lighter-duty units. This step is especially useful after a stringy jam like asparagus or corn husks left residue behind.
Reassemble and Clean the Splash Guard
Snap the rubber splash guard back into the sink flange and wipe the rim with a damp cloth. A loose or worn splash guard misdirects water back into the chamber instead of down the drain, which can cause the overload to trip again on the next use. Replace the guard if the rim is cracked or the bellows no longer sit flush.
When the Reset Button Keeps Tripping
One trip is normal. Three trips in a week means something deeper is wrong, and ignoring it usually ends with a burned-out motor or a flooded cabinet. Diagnose the cause before it cascades.
Check the Drain Line First
A partially clogged P-trap or drain tailpiece forces the disposal to work against back-pressure, which trips the overload even on light loads. Place a bucket under the trap, loosen the slip nuts, and clear any standing water or debris. If the trap is clean, the problem is upstream in the disposal itself.
A Button That Will Not Stay Depressed Signals a Bad Overload
Press the reset and release. It should click and hold. If it pops back out immediately, the internal overload protector has failed and the unit needs professional replacement. Continuing to flip the breaker on a disposal with a popped reset risks burning the motor windings, which turns a $30 service call into a $250 replacement.
Build a Preventive Routine to Stop Future Trips
Cold water during every use, fibrous-food avoidance (celery, corn husks, artichokes), and a monthly baking-soda rinse keep the overload from tripping again. Run the disposal with full cold water for 30 seconds after the grinding sound stops to flush the chamber. A handful of ice plus a tablespoon of baking soda once a month scrubs the grind ring without harsh chemicals.
Routine flushing keeps recurring trips at bay, which is worth one last look at the full picture.
Bottom Line
The fix is almost always one of two moves: press the small button on the bottom of the unit for an electrical trip, or work an Allen wrench into the hex socket to free a jammed flywheel. Cut the breaker first, confirm the power is dead, and the rest is mechanical. A disposal that keeps tripping after a clean reset is telling you the motor, drain, or splash guard needs attention before the next load goes in.
FAQ
Where is the reset button on a garbage disposal?
The reset button sits on the underside of the motor housing on most disposals, often under a small red or black rubber boot. Look for it centered on the bottom of the unit, then press firmly until it clicks and stays depressed.
Why is my garbage disposal humming and not working?
A steady hum with no grinding means the flywheel is locked by a lodged object and the motor is drawing current without spinning. Cut the breaker, insert a 1/4-inch Allen wrench into the bottom hex socket, and rock it back and forth to free the jam before pressing reset.
How long do you hold the reset button on a garbage disposal?
Press the button in until you feel and hear a click, then release. The button should stay depressed on its own, which usually takes one firm push lasting about one second. If it pops back out, the internal overload has failed.
What causes a garbage disposal to trip the reset?
Overloading the chamber with fibrous foods, grinding hard items like bones or pits, running it without cold water, or a partially clogged drain line all force the motor to draw extra current. The internal overload trips to protect the windings, and the reset button restores power once the unit cools.
Can you reset a garbage disposal without a reset button?
If no reset button is visible, the unit likely has an internal overload that resets automatically once the motor cools, or the power loss is upstream at the GFCI outlet or breaker. Check the under-sink receptacle and the kitchen panel before assuming the disposal itself has failed.
Do you need to turn off the power before resetting a garbage disposal?
Yes, always cut power at the breaker before reaching under the sink. The wall switch alone is not enough, because the disposal’s wiring remains live even with the switch off. Confirm silence when the wall switch is flipped, then proceed with the reset.
