Display shows E2 and the coffee maker stops mid-brew or will not start.

Safety first: Unplug the coffee maker and allow it to cool completely (at least 30 minutes) before any inspection. Hot plates and internal tubing can cause burns.

Basic user-level steps:

• Power cycle: After the unit has cooled, unplug it for 5 minutes, then plug it back in and try a brew cycle with plain water.
• Descale the machine: Heavy scale on the heating element can cause localized overheating. Fill the reservoir with a 1:1 mixture of white vinegar and water. Run a brew cycle (without coffee), then stop halfway and let it sit for 20 minutes. Resume the cycle, then run 2–3 full cycles with clean water to rinse.
• Check for blocked vents: Ensure the top and sides of the coffee maker are not blocked. Do not place it under low cabinets where steam cannot escape.

Advanced checks (technician recommended):

• Remove the bottom cover (with the unit unplugged) and test the NTC temperature sensor and thermal fuse on the heating plate with a multimeter. Replace if open, shorted, or out of specification.
• If the sensor and fuse are good, the main control PCB may be misreading temperature and should be replaced.