Bunn coffee maker overflows the brew funnel or carafe during brewing.

Safety: Hot coffee overflow can cause burns. Turn off the brewer immediately if overflow occurs.

Steps:

• 1. Check coffee grind and filter: Use the grind size recommended by Bunn (typically medium drip). Avoid espresso-fine grinds. Ensure you are using the correct Bunn filter size and that it is properly seated.
• 2. Inspect brew funnel: Remove the funnel and check the outlet hole for obstructions (coffee grounds, filter paper). Clean thoroughly.
• 3. Verify sprayhead: Ensure the correct Bunn sprayhead is installed for your model. Using the wrong sprayhead can alter flow and cause overflow.
• 4. Check restrictor: Confirm that the flow restrictor or orifice is present and not drilled out or removed. Replace if missing or modified.
• 5. Brew smaller batch: If you are brewing less than a full pot, ensure the water volume matches the coffee dose and filter capacity.