Display shows “Error 1” and the machine will not start the brewing cycle.

Safety first: Unplug the machine and allow it to cool for at least 30 minutes before opening. Hot internal parts can cause burns.

Step 1 – Power reset:

• Turn the machine off with the main switch and unplug it for 5–10 minutes.
• Plug it back in and power on to see if the error clears. Transient sensor faults sometimes reset.

Step 2 – Check ventilation and scaling:

• Ensure the machine has adequate ventilation around it; blocked vents can cause overheating.
• If the machine is heavily scaled, run a full descaling cycle (if accessible) once the error clears; scale can cause localized overheating.

Step 3 – Inspect thermoblock sensor (advanced):

• Remove the outer housing (unplug first).
• Locate the thermoblock assembly; the NTC sensor is usually clipped or screwed onto the thermoblock with two small wires leading to the main board.
• Check for broken wires, loose connectors, or corrosion at the sensor plug.
• Reseat the connector firmly.

Step 4 – Replace faulty parts:

• If the sensor is physically damaged or tests open/short with a multimeter, replace the NTC temperature sensor.
• If a known-good sensor still triggers Error 1, the main control board may have a defective temperature input circuit and should be replaced by a qualified technician.