Overflow is caused by grounds clogging the filter. Use less coffee, especially for decaf or flavored beans.
- Reduce grounds. Use 3/4 tablespoon (11 ml) per cup for decaf or flavored coffee.
- Use medium-ground coffee. Finely ground coffee clogs and overflows.
- Clean the coffee maker monthly (weekly in hard water areas). Mineral buildup slows flow.
If using a paper filter:
- Rinse the filter basket before inserting the paper filter so it sticks to the sides.
- Ensure the paper filter is fully open and seated properly.
- Check that grounds aren't between the paper filter and the basket.
Slow brewing is a clear sign the unit needs a vinegar cleaning cycle.