Likely Causes
A foreign object lodged against the impeller
A foreign object lodged against the impeller. This is one of the more frequent reasons homeowners in our service area call about this exact symptom.
A tripped reset button from overheating
A tripped reset button from overheating. This is one of the more frequent reasons homeowners in our service area call about this exact symptom.
A failed motor or capacitor
A failed motor or capacitor. This is one of the more frequent reasons homeowners in our service area call about this exact symptom.
Safe Checks You Can Try First
- Turn off power at the switch, then check for visible obstructions from the sink side
- Press the red reset button on the bottom of the unit
- Use the hex-key opening (if equipped) to manually free a jammed impeller
When to Call a Technician
If the unit still only hums after clearing a jam and resetting, the motor likely needs professional attention.
Frequently Asked Questions
No — most cases like this are a specific, repairable part failure rather than a sign the whole unit needs replacing. A technician can tell you the realistic cost-versus-replace comparison on the spot.
The checks above are safe to try yourself. Beyond that, appliance repair involves electrical, gas, or refrigerant systems that are best left to a trained technician.