Appliance
La Cornue ranges
The range is what La Cornue makes, and everything else in the line exists around it. A Château is built to order in France, arrives in a crate weighing over half a ton, and is assembled from parts a customer chose one at a time: which oven is gas and which is electric, whether the top carries a French top, a lava-rock grill, induction or a teppanyaki plate, which of about fifty enamels, which trim metal. Two of them are almost never identical. That is the first thing a repair on one has to take seriously — the model number tells you the size, and the configuration code tells you what is actually under the lids.
- 18 symptoms we are called out to
- From $95 diagnostic, credited to the repair
- 59 cities and neighborhoods covered
- OEM parts available on order
The short version
What this equipment is, for a repair
Configurations
Dual fuel · gas · all-induction — Château, Châtelet, Castel, Grand Palais, CornuFé
Access
Planned before the visit, not discovered on arrival
Parts
OEM, available on order
Diagnostic
From $95, credited to the repair
What goes wrong with it
Symptoms we are called out to on La Cornue ranges
Each one covers the likely causes in the order they are worth checking, and what to do in five minutes before booking anything.
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No flame, and no obvious reason Burner will not light
One burner dead while the others work is a different problem from a whole top that will not light, and the two are worth separating before anybody calls anybody. On brass burners in a humid kitchen the single dead burner is nearly always the electrode or the ports; a whole top points at the ignition module or the gas supply.
- One burner out is that burner — not the module
- All of them out is ignition or supply, and it is quick to tell
- Never hold the knob in while it clicks
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The spark is there and the flame is not Burner clicks but will not ignite
Continuous clicking with no flame — or clicking that carries on after a burner has lit — is one of the two or three most common calls on any gas range, and on this one it has a short list of causes. It is also the symptom people live with longest, and it should not be: every click is unlit gas.
- Clicking after ignition is usually a wet or dirty electrode
- Clicking on every burner at once points at the module
- It is a small part and a same-visit job in most cases
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The flame is the wrong color Yellow or orange flame
A gas flame on this range should be blue with a defined inner cone. Yellow or orange tips, soot on the bottom of a pan and a smell of unburnt gas mean the air-to-gas mixture is wrong, and on a range that has moved house or changed fuel that has a specific and common cause.
- Blue is correct — yellow is an air, fuel or orifice problem
- A bad propane conversion is the leading cause on a relocated range
- Soot on a pan bottom is the symptom people notice first
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It lights and then goes out Burner will not stay lit
A burner that lights while the knob is held and dies when it is released is a flame supervision failure, and it is the same problem whether it happens on a surface burner or in the oven. The safety system is doing what it exists to do; the reason it no longer trusts the flame is what needs finding.
- The safety chain is working — it just no longer sees the flame
- Thermocouple, then valve, in that order
- An oven that does this is a same-day call
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It lights, but there is no heat in it Weak or uneven flame
A burner that lights cleanly and produces half the heat it used to, or a flame that is tall on one side of the crown and absent on the other. On a range whose front burners are rated at 17,000 BTU and whose power burner is rated at 22,000, a weak flame is not a small loss — it changes what the range can do.
- Uneven around the crown is ports or a misseated cap
- Weak on every burner is supply pressure or a regulator
- The plaque burner is the one nobody notices has weakened
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Stop and read this first Gas smell in the kitchen
A smell of gas is the one symptom on this site with instructions rather than a diagnosis. Turn the range off at its shut-off valve, open windows, do not operate switches or the hood, and get everyone out if the smell is strong. Then call the gas utility or 911 first and us second.
- Utility or 911 first, appliance repair second
- Do not operate switches, the hood or a phone in the room
- A faint smell only while lighting is a different matter from a persistent one
What we do on it
Repairs we carry out on La Cornue ranges
Starting figures for this equipment in South Florida. The exact cost is confirmed after an on-site diagnostic — and this is not the whole list of what can go wrong, so call if your problem is not here.
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from $95 Diagnostic visit
One visit, one technician, one answer in writing. On a make with three error codes in its entire documentation, the diagnostic is not a formality before the repair — it is the repair's only source of information, and it is done with instruments rather than by elimination.
- Measured, not guessed — this make reports almost nothing on its own
- The configuration code read off the range, because it decides the parts
- Written findings and a from-price before anything is opened
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from $195 Appliance maintenance
An annual visit that exists because most of what goes wrong on this make goes wrong slowly. Burners drift rich, thermostats drift hot, baffles saturate, brass tarnishes, and the owner adapts to every one of them without noticing. This is the visit that measures instead of adapting.
- Burner combustion and oven calibration checked against specification
- Baffle filters, duct flow and blower condition on the hood
- Enamel, trim and seals inspected while they are still repairable
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from $295 Appliance installation
A Château is delivered in a crate that can weigh 1,320 lb and is leveled to a specification, not to a spirit level held by eye. Installation covers gas, electrical, leveling, hood duct and the first-use check — and it covers the paperwork, because altitude, fuel type and voltage are specified at order time and have to match what is actually in the house.
- Gas and electrical to the maker's own requirements document
- Leveled to specification — a dish of water sits at one depth all over
- First-use check, and the hood duct measured rather than assumed
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from $155 Surface burner and igniter service
Clicking with no flame, a burner that lights and will not stay lit, a lazy yellow flame. On brass burners in a coastal kitchen these are three symptoms of a short list of causes, and none of them is the ignition module when only one burner is affected.
- One burner out is the electrode or the ports — not the module
- Yellow flame is air mix, fuel or an orifice, and it is measurable
- Ports cleared properly rather than poked at
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from $265 Gas valve and thermocouple repair
The safety chain: a valve that will not hold open, a thermocouple that no longer tells it to, a knob that has gone stiff or will not shut off cleanly. This is the part of a gas range where nothing gets improvised and nothing gets left half-diagnosed.
- Safety valve and flame supervision tested as a system
- Stiff or leaking knob valves rebuilt or replaced, never lubricated over
- Leak-checked at every joint that was opened
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from $245 French top service
The plaque coup de feu is a single cast-iron plate heated by one 7,500 BTU burner directly under its center, and it is the most-used and least-understood part of the range. Cracks, warping, rust, dead cold spots and a burner running wrong underneath are all different problems that present the same way.
- Crazing in the seasoning and a crack through the iron are told apart
- The burner beneath it checked first — most cold spots start there
- Re-seasoned properly, so the plate is handed back working
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from $225 Lava rock grill service
A linear 14,500 BTU burner under a bed of natural lava rocks, and a module that lives its whole life under fat. Weak or uneven flame, flare-ups, a burner that will not light along its length, and rocks that have turned into a sealed crust are the calls.
- Rock bed replaced rather than raked over
- The linear burner cleared along its whole length
- Drip tray and grate condition treated as part of the job
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from $285 Teppanyaki element repair
The electric griddle module — a solid plate held between 140 and 482 degrees by an element and a control. It fails as electric things fail: no heat, one temperature only, or a plate that will not hold the setting it is given.
- Element, sensor and control measured separately
- The plate checked for flatness — a bowed griddle cooks unevenly and is not a control problem
- Temperature verified across the surface, not at one point
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from $325 Propane conversion service
La Cornue publishes a conversion procedure and a specific parts set for the CornuFé 90 and 110, and specifies fuel at order time on a Château. A conversion done with approximate parts gives yellow flames, soot and burners that will not hold a simmer — and it is one of the most common things we undo on a range that has changed house or fuel.
- The maker's own orifice set, not a universal kit
- Every burner and both ovens set and verified, not just the fronts
- Written record of what the range is now set for
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from $395 Range relocation and leveling
Moving a hand-built French range is a planned job. A Grand Palais 180 is about 710 lb uncrated, the legs are adjustable across half an inch of specified height, and a range that is out of level cooks unevenly in a way that looks exactly like an oven problem.
- Enough people and the right equipment, or it does not get moved
- Leveled to specification and verified with water on the shelf
- Gas and electrical disconnected and reconnected properly, not stretched
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from $265 Enamel panel and trim service
Vitreous enamel is glass fused to steel and about fifty colors of it were available at order time. A chip is not cosmetic in this climate — the steel under it rusts outwards — and a tarnished brass handrail attacked with the wrong product loses its lacquer along with the tarnish.
- Chips stabilized or the part ordered in the range's own color reference
- Brass, copper, nickel and chrome trim treated by what they actually are
- Clear-coated finishes identified before anything is polished
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from $285 Flamberge rotisserie repair
The gas rotisserie module: a burner, a motor, a spit and a set of controls, and a module that sits idle for months and is then expected to work on a holiday. Motor failures, a burner that will not light and a spit that will not turn under load are the three calls.
- Motor and gearing tested under a loaded spit, not empty
- The rotisserie burner treated as its own gas circuit
- Spit, forks and bearings checked for the wear that stops rotation
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from $275 Vaulted gas oven ignition repair
The vaulted gas oven has no display, no window and no error code — La Cornue's own Château guide contains no troubleshooting section at all. So an oven that will not light is diagnosed the way gas has always been diagnosed: igniter, safety valve, thermocouple, supply, in that order and with instruments.
- A glowing igniter that never opens the valve is the classic failure here
- Safety valve and flame supervision measured rather than swapped
- Same-day priority — an oven that smells of gas is not a next-week call
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from $185 Oven thermostat calibration
An oven that has drifted hot over years, and a cook who has quietly rewritten every recipe around it. The manual is explicit: an oven that gets hotter as the range ages and does not come back when the dial is turned down wants a thermostat, not a new habit.
- Measured with a calibrated probe through a full cycle
- Drift distinguished from a vaulted oven's designed unevenness
- The owner warned that a corrected oven changes their cooking
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from $255 Oven element and broiler replacement
Every vaulted gas oven on this make carries an electric broiler above it, and the electric ovens are elements throughout. That means a range can lose browning and keep baking perfectly, or the reverse, and the two are separate parts.
- Bake and broil are separate circuits and separate failures
- Elements measured cold and under load
- Element supports and terminals checked, because that is where they burn out
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from $215 Oven door seal and hinge service
On a vaulted oven the door is part of the cooking mass, and a seal that no longer pulls onto its frame turns into a cooking complaint rather than a visible leak. Long preheats, a cool front shelf and browning on one side all start here.
- Seal, catch and hinge adjusted as one system
- Door pull measured, not judged by how it sounds
- Heat loss confirmed before and after
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from $235 Convection fan repair
The electric and multifunction ovens use a fan, and the noise it makes changes as the oven heats — which the manual says is normal. A fan that rumbles, ticks, slows or stops is not normal, and it takes the oven's evenness with it.
- Bearing noise separated from the normal change in note
- Motor tested at temperature, because that is when it fails
- Blade and housing checked for the contact that causes ticking
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from $325 Induction hob repair
The three codes La Cornue documents anywhere all live here: E2, the electronics are too hot; U400, the cooker is incorrectly connected; Er with a number, an internal problem the user cannot clear. Everything else on that display is an indicator, and telling the two apart saves a visit.
- E2 is investigated as ventilation first, as the maker's own guide says
- Indicators — H, the pan-missing symbol, L, A, P — are not problems
- Zone-by-zone testing with pans that meet the minimum diameters
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from $595 Induction glass replacement
The one problem on this make with a safety instruction attached. La Cornue's guide is unambiguous: a cracked hob is disconnected from the power supply immediately and not used until it has been repaired, because the glass is what separates the coils and the electronics from whatever is spilled on it.
- Made safe first, diagnosed second
- Glass ordered to the range's own configuration, not a generic panel
- Coils and electronics inspected for what has already got through the crack
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from $295 Cooktop control and wiring repair
U400 latched on the display, a hob with no display at all, a fuse or residual-current device that trips repeatedly. All three are supply-and-connection problems in the maker's own words, and all three turn up after something in the house changed.
- The appliance connection checked against the maker's specification
- Over-voltage and lost supply distinguished from a dead control
- Findings written down when the problem is upstream of the range
In more detail
About La Cornue ranges
Nine sizes, and the configuration matters more than the size
La Cornue's current range line runs from the 23.6-inch Castel 60 to the 70.9-inch Château Grand Palais 180, with the Castel 75, Grand Castel 90, Châtelet 135, Château 120, 150 and 165 in between, and the factory-built CornuFé 90 “Albertine” and CornuFé 110 alongside them. What decides a repair, though, is the top configuration code that came with the order — N1 through N9 on a 180, K1 through K6 on a 150, C1 through C5 on a Grand Castel 90 — because that code is what says whether the range in front of us has two gas burners and a French top, a lava-rock grill, a pair of induction zones or a teppanyaki plate. Two ranges with the same model number can need entirely different parts. When you call, the size and the code together tell us more than a photograph does.
Three kinds of range, and it changes the whole parts list
Dual fuel is the Château 120 and everything above it: a vaulted gas oven with an electric broiler on one side, a vaulted electric oven on the other. Two different appliances in one cabinet, with two thermostats that drift independently. All gas is a gas top over a vaulted gas oven — the most mechanical range in the line, with no control board anywhere in it and nothing to read on a display because there is no display. All induction is the Castel 60, which is electric throughout, and any Château ordered with the all-induction cooktop — available on the 150, 120, 90 and 60 — where the ovens are always electric by rule of the order form. So the same model number can arrive as a gas range with no electronics at all or as a fully electric one where all three of this make’s error codes apply. Which of the three you have decides what can even go wrong.
The vaulted oven is not a conventional oven with a curved roof
The voûte is a sealed dome that cooks by radiant heat from the mass around the food rather than by blowing hot air at it, and on a Château gas oven there is no window in the door because the door is part of the mass. That has three practical consequences. Heat is delivered unevenly on purpose, so “uneven baking” on a vaulted oven is often the oven working as designed and needs a conversation before it needs a part. The gas ovens run with an electric broiler above them, so a range can lose browning and keep baking. And because there is no glass to look through, a burner that has gone out announces itself by smell and by a cold shelf rather than by sight — which is why a gas oven that will not stay lit is a same-day call rather than a next-week one.
What South Florida does to a French range
Salt air and brass are a poor combination, and a coastal kitchen with the windows open will tarnish polished trim within a season. That is maintenance rather than repair, and it is worth knowing which is which before somebody attacks a handrail with the wrong product and takes the lacquer off with the tarnish. The failures we actually get called to on ranges here are gas-side and electrical-side in roughly equal measure: igniters and thermocouples that have taken years of humidity, safety valves that no longer hold, thermostats that have drifted so gradually the owner recalibrated their own recipes instead, hob glass cracked by a dropped pan, and induction electronics that have been cooking themselves in a cabinet with too little ventilation. Every one of those is a part, not a new range.
This article is based on:
- Official manufacturer documentation
- Internal repair procedures
- Technician repair history
- Company quality standards
Before you book
Questions about La Cornue ranges
One oven works and the other does not. Is that one repair or two?
Usually two, because on most of this line the two ovens are not the same appliance. A Château 120 and everything above it is dual-fuel by design: the left oven is a vaulted gas oven with an electric broiler, the right one is electric. They share a cabinet, a control panel and nothing else — different heat source, different thermostat, different failure list. So "the oven is not heating" is two different diagnoses depending on which door you opened, and the first question on the phone is which side. The exception is a range ordered with an all-induction top, where La Cornue's own order form forces both ovens to be electric; then the two are alike and a control failure can genuinely take both.
How much of the range has to come apart to reach anything?
Less than people fear, and that is deliberate — these are built to be serviced for decades rather than replaced. The cooktop modules lift out, the front panels come off, and most of the gas train, the valves and the igniters are reached from the front with the range where it stands. What we do not do is move it casually: a Grand Palais 180 is about 710 lb without its crate, the legs are adjustable and level to a specification, and dragging one across a tile floor to get behind it creates a bigger problem than the one it solves. When something genuinely requires access from behind, that is planned, with the right number of people and the right equipment.
The enamel is chipped near a burner. Can that be repaired or is it cosmetic?
Treat it as neither cosmetic nor hopeless. Vitreous enamel is glass fused to steel, and once it is broken the steel underneath is exposed to moisture and cooking acids, which in this climate means it will rust from the chip outwards. Small chips in a low-heat area can be stabilized. A chip on a drip tray or directly under a burner is in the worst possible place and the honest answer is a replacement part in the original color, ordered against the range's own finish. That is a reason to tell us the finish name when you call rather than after the visit — a color match on this make is a catalog reference, not a judgement made by eye.
It was converted to propane years ago and now the flames look wrong. Related?
Very possibly, and it is one of the first things we check on a range that has moved house or changed fuel. La Cornue publishes a conversion procedure and a specific set of parts for the CornuFé 90 and 110; a Château is specified for natural gas or propane at the time of order, and altitude above 2,000 feet is specified too. A conversion done with approximate parts, or a range plumbed for one fuel and fed the other, gives exactly what you are describing: lazy yellow tips, soot on a pan bottom, burners that will not hold a low flame. Bring us the conversion paperwork if it exists, and if it does not, say so — that is useful information rather than an admission.
Where we do it
Across Miami-Dade, Broward, and Palm Beach
Same terms everywhere we go: an on-site diagnostic first, the price agreed in writing, and the exact figure confirmed once we have seen the unit.
Neighborhoods people ask for by name