Bunn coffee maker displays E08; brew cycle may terminate early or not start, often related to brew valve or dispense issues.

Safety: Unplug the brewer and allow it to cool. Shut off water supply if you will be opening the water path.

Steps:

• 1. Listen during brew attempt: Start a brew and listen for the click of the brew solenoid (if safe to do so). No click may indicate a failed coil or control output.
• 2. Inspect brew valve: Access the brew solenoid valve (usually near the outlet of the hot water tank leading to the sprayhead). Check for leaks, corrosion, or loose connectors.
• 3. Test coil: With power disconnected, measure resistance across the solenoid coil. An open reading indicates a failed coil; replace the brew solenoid valve assembly.
• 4. Clean internal passages: Remove the valve and inspect for mineral scale or debris. Soak in descaling solution if needed, then flush thoroughly before reinstalling.
• 5. Check wiring and board: Verify the harness from the control board to the valve is intact. If the coil tests good but never energizes, the control board output may be defective.

Note: After service, run multiple brew cycles to confirm consistent flow and that E08 does not recur.