Display shows E3 and brewing stops mid-cycle or never starts heating.

Safety first: Unplug the coffee maker and let it cool for at least 30 minutes. The heating element and internal boiler can remain hot even after power is removed.

• 1. Allow full cool-down
  • Leave the unit unplugged until the warming plate is completely cool to the touch.
  • After cooling, plug it back in and try a fresh brew cycle with a full reservoir.
• 2. Descale to prevent dry heating
  • Fill the reservoir with a 1:1 mixture of white vinegar and water.
  • Run a brew cycle without coffee grounds to clear mineral buildup that can restrict flow and cause overheating.
  • Follow with 2–3 full cycles of clean water to rinse.
• 3. Inspect heater circuit (advanced)
  • Unplug the unit and remove the bottom cover.
  • Locate the heating element, thermal fuse, and thermostat mounted to the boiler or warming plate.
  • Check for burnt connectors, discolored insulation, or a visibly blown thermal fuse.
• 4. Replace failed safety components
  • If the thermal fuse is open (no continuity) it must be replaced with the same temperature and current rating.
  • Do not bypass or short the thermal fuse or thermostat; this defeats critical safety protection.
• 5. Seek service
  • If E3 returns after descaling and inspection, the control board or heater assembly may be defective and should be serviced or replaced by a qualified technician.