Most La Cornue ranges are mechanically controlled, so there is no display and nothing to look up against a code list. The diagnosis instead starts with what the range is actually doing: does the burner spark but not catch, does it light and then drop out, does the oven reach temperature slowly or not at all, does an induction zone respond to a pan at all. Each of those points at a specific, testable part — an igniter, a thermocouple, a thermostat, a control board — before anything is ordered.
Because La Cornue parts are often model-specific and sourced from France rather than pulled from a local warehouse, getting the diagnosis right the first time matters more here than on a mass-market range: a wrong guess does not cost a second visit, it costs the weeks a replacement part takes to arrive. Where a model does carry an electronic touch control or induction display, we read what it shows, but we do not assume a code system exists where La Cornue has not published one.
