Lucy Martinez is a Senior Diagnostic Specialist whose work centres on the electronic side of La Cornue cooking appliances — induction cooktops and range tops, the multifunction ovens, and the digital range hoods. She specializes in fault-code diagnostics: reading what an E2 overheat message, a U400 connection error, an “Er” internal fault, or a flashing “U” pan-detection warning is really telling you, and tracing it to the right coil, sensor, or control board.
On induction cooktops and range tops, Lucy distinguishes a genuine coil or sensor failure from a simple cookware mismatch, and she knows when a flashing “U” with the correct ferrous pan in place points to a hardware fault rather than user error. On La Cornue range hoods she diagnoses blower capacitors and motors, four-speed switch faults, and the halogen lighting circuits, restoring quiet, effective extraction.
Lucy is methodical about the difference between a protective behaviour — an overheat cut-out, a pan detector, the residual-heat “H” indicator — and an actual fault, which keeps repairs accurate and avoids replacing parts that are working as designed. Her diagnostics underpin much of the troubleshooting content on this site.
