E09 appears and the coffee maker will not heat; the warming plate stays cold even though brewing completes.

Safety: Unplug and allow the unit to cool before working on the warming plate.

• 1. Access the warming plate:
  • Remove the bottom cover to expose the underside of the warming plate.
  • Identify the heater terminals and any inline thermostat or thermal fuse.
• 2. Test the warming plate element:
  • Disconnect the heater wires and measure resistance across the plate element with a multimeter.
  • If the reading is open (OL), the warming plate assembly must be replaced.
• 3. Check thermostat / thermal fuse:
  • Locate the small thermostat or thermal cutoff attached to the plate.
  • Test for continuity at room temperature. If open, replace with the correct rated part.
• 4. Inspect relay and wiring:
  • On the control board, locate the warming plate relay and check for burnt contacts or cracked solder joints.
  • Resolder or replace the board if damage is found.
  • Ensure all wiring from the board to the plate is intact and firmly connected.
• 5. Test operation:
  • Reassemble, plug in, brew a small pot, and verify that the warming plate heats and E09 clears.