Display shows E4 and the coffee maker beeps without brewing.

Safety first: Unplug the coffee maker before reaching under the filter basket or around the warming plate.

• 1. Check carafe position
  • Ensure the glass or thermal carafe is fully pushed back and centered on the warming plate.
  • Remove and reseat the carafe firmly.
• 2. Inspect drip-stop mechanism
  • Open the filter basket door.
  • Locate the drip-stop lever or valve at the bottom of the basket.
  • Press it up and down several times to ensure it moves freely and is not stuck with coffee residue.
  • Clean the area with warm soapy water, then dry thoroughly.
• 3. Clean carafe bottom and plate
  • Wipe the bottom of the carafe and the warming plate to remove coffee spills that may interfere with sensors.
• 4. Check carafe sensor switch (advanced)
  • Unplug the unit and remove the bottom cover.
  • Locate the small microswitch or magnetic sensor under the warming plate.
  • Verify that its actuator moves when the carafe is pressed down and that the wiring connector is secure.
• 5. Replacement
  • If the microswitch is physically broken or does not click when pressed, replace it with a compatible Sunbeam carafe sensor switch.
  • If E4 persists with a known-good switch, the control board input circuit may be faulty and require replacement.