Garbage Disposal Won't Turn On: Troubleshooting & Repair Guide
About This Project
This project provides steps to troubleshoot and repair a garbage disposal that won't turn on. First, you need to turn off the power at the breaker box and unplug the disposal from the outlet. The next step is to check the reset button, which is a red button placed in the center of the bottom of the unit, and push it to reset the garbage disposal. Finally, if the garbage disposal is still not working, you can check for jammed motor using the Allen wrench underneath the disposal by inserting it into the gear and rotating it back and forth.
Best for homeowners and DIY enthusiasts.
Tools & Materials
Wrench
Wrench
Turns objects with grip and leverage.
Steps
Check the Circuit Breaker
5 minsLocate your kitchen's circuit breaker panel. Find the breaker controlling the garbage disposal (it may be labeled). If the breaker is tripped (in the 'off' position), carefully switch it back to the 'on' position. If it immediately trips again, there may be a short circuit; call a qualified electrician.
Free the Jammed Motor (If Necessary)
10 minsIf the disposal still doesn't work, the motor might be jammed. Locate the small hex-shaped hole at the bottom of the unit. Insert an Allen wrench (usually a 1/4 inch) into the hole. Gently rotate the wrench back and forth to free any obstructions. This may dislodge a small object stuck in the grinding chamber. If you encounter significant resistance, stop and call a plumber.
Common Problems
Can't find the reset button to fix a dead garbage disposal.
Solution: You may need a flashlight to easily locate the reset button under the sink.
Disposal won't turn on because the reset button is hard to find.
Solution: The button may be hard to see. Feel around the bottom casing of the disposal unit if you cannot see it immediately.
Disposal won't reset because the reset button is hard to find.
Solution: You may not need to see the button; you can often locate it just by feeling along the bottom of the disposal unit.
Disposal won't turn on after troubleshooting.
Solution: Before resetting, restore power at the breaker panel (if you turned it off). Then, run cold water and briefly turn on the disposal switch to see if it runs. If not, then press the reset button.
Disposal won't restart after tripping the reset button.
Solution: If the button does not stay in, the motor may still be jammed or has overheated. Wait a few minutes for it to cool down and try again.
Failure to disconnect the power can lead to serious injury.
Solution: To avoid this issue: Be mindful of this warning and take appropriate precautions.
For hardwired disposals, you must turn off the power at the circuit breaker to avoid electrical shock.
Solution: To avoid this issue: Be mindful of this warning and take appropriate precautions.
Frequently Asked Questions
What's the absolute first and most critical safety step I need to take before troubleshooting my garbage disposal?
Always turn off the power to the disposal at your home's main electrical breaker box first. This prevents accidental electrocution or injury while you are working near electrical components and moving parts. After turning off the breaker, it's also a good practice to unplug the disposal if accessible.
What specific tools are essential for troubleshooting a garbage disposal that won't turn on?
You will primarily need an Allen wrench, often a 1/4-inch or 1/8-inch, which usually comes with the disposal unit. This is crucial for freeing a jammed motor by inserting it into the center hole at the bottom of the disposal and rotating it. No other specialized tools are typically required for these basic troubleshooting steps.
I pressed the reset button, but it just pops right back out. What does that mean?
If the reset button immediately pops back out, it typically indicates that the motor is still overloaded or a jam persists. Do not force it back in. You likely have a jammed motor that needs to be cleared first using the Allen wrench from the bottom of the disposal before the reset button will stay in.
How can I tell if the motor is jammed, and what if I don't have the specific Allen wrench?
A humming sound from the disposal without the blades turning is a strong indicator of a jam. To clear it, insert the Allen wrench into the center hole on the bottom of the disposal and rotate it back and forth to free the impellers. If you don't have the original wrench, a correctly sized hex wrench from a standard set will work, or you can purchase one at a hardware store.
Is this really a beginner-friendly project, and how long should I expect it to take if I follow these steps?
Yes, these troubleshooting steps are designed for beginners and are generally straightforward to perform. Most common issues like a tripped reset button or a simple jam can be resolved within 15-30 minutes. Even if you need to free a jam, the entire process rarely exceeds 45 minutes, making it a quick DIY fix.
I've tried all the troubleshooting steps, but my garbage disposal still isn't working. What should I do next?
If resetting the button, checking the circuit breaker, and freeing any jams with the Allen wrench don't resolve the issue, the problem might be more complex. This could indicate a faulty motor, wiring, or internal damage. At this point, it's best to consult a professional electrician or plumber to diagnose and repair or replace the unit safely.
