Model overview
Grand Palais is part of the full name here, so write out the complete Château Grand Palais 180 range model when you book a repair. Its 70 7/8-inch size is large enough that a symptom may be limited to one section while the rest works normally. Note whether a burner clicks without lighting, whether baking runs unevenly from side to side, or whether a convection fan or oven light has gone dark. Those details help a technician narrow down the affected section before arrival. This La Cornue range serves homes across Los Angeles and Orange County, so the booking form should carry the full name, the size from the label, and the first symptom.
Château Grand Palais 180 range is a La Cornue 70 7/8" range. The model number is printed on the rating label, usually on the frame behind the storage or warming drawer, or around the oven door opening; match it letter for letter before booking, because a single letter can change parts.