Display shows E2 and the coffee maker will not heat or brew.

Safety first: Unplug the coffee maker and let it cool for at least 30 minutes. The heating plate and internal tubing can remain hot.

Initial checks:

• Reset attempt: After cooling, plug the unit back in and try a brew cycle with water only. If E2 appears immediately, proceed to internal checks.
• Check for external blockage: Ensure the carafe is correctly seated and the brew basket is not overflowing or blocked, which can cause overheating.

Internal inspection:

• Remove the bottom cover to access the heating element, thermal fuse, and thermostat.
• Locate the thermal fuse (small cylindrical component wrapped in heat-resistant sleeve attached to the heater wiring) and the bimetal thermostat (disc-shaped device clipped to the warming plate or heater tube).
• Visually inspect for signs of overheating: discoloration, melted insulation, or burnt odor.
• With a multimeter (unit unplugged), test continuity across the thermal fuse and thermostat. Either part reading open (no continuity) when cool is likely failed.

Descaling to prevent recurrence:

• Heavy scale buildup in the aluminum heating tube can cause localized overheating. Run a descale cycle with a 1:1 mixture of white vinegar and water through the machine (once repaired) to restore proper flow.

When to replace:

• If the thermal fuse is open, replace it with a Black+Decker-compatible thermal fuse of the same temperature and current rating.
• If the thermostat does not reset when cool or shows no continuity, replace the warming plate thermostat.
• If both parts test good and E2 persists, the control PCB may be misreading temperature and should be replaced.

Warning: Thermal fuses must be crimped or clamped, not soldered, to avoid premature failure. If unsure, seek professional service.