Display shows E1 and brewing will not start or stops immediately after pressing the brew button.

Safety first: Unplug the coffee maker and allow it to cool completely before inspecting any parts.

• Check tank seating: Remove the water reservoir and reinsert it firmly. On many Russell Hobbs digital coffee makers, a small tab on the tank must press a microswitch or magnet sensor in the base. Make sure the tank is fully down and flush with the housing.
• Inspect the float: If your model has a visible float inside the tank, move it up and down with a clean utensil. If it sticks, wash the tank with warm soapy water and rinse thoroughly to free the float.
• Clean tank contacts: Some models use metal contacts between the tank and base. Wipe both sides with a dry cloth to remove scale or moisture.
• Reset power: With the tank correctly fitted, plug the unit back in and press the power/brew button to see if E1 clears.
• If the error persists: The tank presence microswitch or sensor circuit on the control PCB may be faulty. Replacement of the water tank sensor/microswitch or control PCB is recommended and usually requires a technician.