Unplug the grinder, remove the hopper and burrs, and clear any jammed coffee or debris. If the motor is hot, let it cool for 30 minutes. Check the power cord and switch. For persistent issues, consider replacing the grinder.
Why It Happens
Your coffee grinder may stop grinding for several reasons. The most common is jammed burrs caused by oily beans, foreign objects, or overfilling the hopper. Motor issues can arise from overheating due to extended use or a faulty thermal overload switch. A faulty switch or power connection can also prevent the grinder from turning on. Understanding the cause helps you decide whether to repair or replace.
How to Fix a Coffee Grinder That Won't Grind
Follow these steps to troubleshoot your grinder. Always unplug the unit before cleaning or disassembly.
- Clear jammed burrs: For Baratza, remove the hopper and top burr. Use a brush or compressed air to remove debris. For Breville, access the upper burr by turning it counterclockwise. For Cuisinart, remove the bean hopper and clean the burr chamber with a dry cloth.
- Check for overheating: If the grinder stops mid-use, the thermal overload may have tripped. Let it cool for 30 minutes. For Baratza, you can reset the thermal fuse by pressing the reset button (if equipped).
- Inspect the power cord and switch: Test the outlet with another device. For Breville and Cuisinart, check the switch with a multimeter. On Baratza, listen for a relay click when pressing the start button.
- Test the motor: If the grinder hums but doesn't spin, the motor may be seized. For Baratza, remove the burrs and try turning the motor shaft by hand. For Breville and Cuisinart, a seized motor usually means replacement.
- Reset safety interlocks: Many Cuisinart models have a safety switch under the hopper lid. Ensure the lid is properly aligned and the hopper is locked in place.
When to Replace vs Repair
Repair is cost-effective for Baratza grinders because parts are widely available. Replace the burrs every 500 pounds of coffee or if they are dull. For Breville, if the motor fails or the gearbox cracks, replacement is often cheaper than repair. Cuisinart grinders are generally less repairable; if the motor or switch fails, consider a new grinder. As a rule, if repair costs exceed half the price of a new model, replace it. Also replace if the grinder is over 5 years old and has performance issues.
FAQ
Why is my coffee grinder making a clicking noise but not grinding?
A clicking noise usually means the burrs are jammed or the motor is struggling. For Baratza models, the most common cause is a foreign object or coffee bean stuck between the burrs. Unplug the grinder, remove the hopper and burr, and inspect for debris. For Breville and Cuisinart, check the burr alignment and clean any buildup. If the motor clicks but doesn't spin, the thermal overload switch may have tripped due to overheating. Let the grinder cool for 30 minutes before retrying.
Can I fix a coffee grinder that won't turn on?
Yes, if the grinder won't power on, first check the power cord and outlet. For Baratza models, the internal fuse may have blown; replace it if you're comfortable with electronics. For Breville, a faulty switch is common. Test the switch with a multimeter or listen for a click. Cuisinart grinders often have a safety interlock on the hopper lid; ensure it's fully seated. If none of these work, the motor may be burned out and replacement is more cost-effective than repair.
How do I know if my coffee grinder needs to be replaced?
Replace your grinder if repair costs exceed 50% of a new model, the motor has burned out, or the burrs are worn beyond adjustment. For Baratza, replacement burrs and parts are available, making repair viable. For Breville and Cuisinart, if the motor fails or the gearbox is damaged, replacement is often cheaper. Also consider replacing if the grinder is more than 5-7 years old and consistently underperforms.