Coffee maker turns off by itself during brewing or shortly after starting.

Safety: Unplug and allow the machine to cool fully before inspection.

• Ventilation: Ensure the machine is not enclosed tightly under cabinets and that vents are clear.
• Descale: Run a full descaling cycle to improve heat transfer and reduce overheating.
• Check for loose connections: With covers removed, inspect mains connectors, spade terminals on the heater, and board connectors. Reseat any loose connections.
• Inspect thermal cutouts: Check thermostats and thermal fuses on the thermoblock. A weak thermostat may trip prematurely and should be replaced.
• If the unit trips the household breaker: A shorted heater or board is likely; replace the thermoblock or main board as appropriate.