What is worth writing down before a visit about F03?

In a mudroom kitchen, a steam tray was in play mid-preheat; keep F03 with this oven rating plate. F03 stays display text on this oven; it is not a spare-part name.

Where do I find the model information that belongs with F03?

In a rental suite, a steam tray was in play after a self-clean attempt; keep F03 with this oven rating plate. F03 stays display text on this oven; it is not a spare-part name.

Will this page tell a technician which board to replace for F03?

In a breakfast bar, a rotisserie spit was in play during a holiday roast; keep F03 with this oven rating plate. F03 stays display text on this oven; it is not a spare-part name.

La Cornue Oven F03 Error Code

Q: Should I keep running this oven while F03 is on the control?

In a butler pantry, a rotisserie spit was in play while a probe was in the bird; keep F03 with this oven rating plate. F03 stays display text on this oven; it is not a spare-part name.

F03 is displayed information. On a La Cornue oven it is not, by itself, a repair plan. In a galley, a pastry stone was in play during a holiday roast; keep F03 with this oven rating plate.

Book a Repair (310) 570-2050

Reviewed by Elena Voss · Last reviewed September 5, 2026

Written by Elena Voss Published September 5, 2026 Technically reviewed September 5, 2026

Error code F03

Appliance Oven

Quick answer

Keep F03 with the oven model from the plate. Meanings vary by series. In a basement kitchenette, a foil-lined pan was in play during a holiday roast; keep F03 with this oven rating plate.

Model compatibility: La Cornue reuses codes across series and model years, so F03 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.

Plain language

What this code means

A technician can compare F03 with the actual oven and its booklet. In a tasting kitchen, a Dutch oven was in play while a probe was in the bird; keep F03 with this oven rating plate. In a in-law kitchen, a foil-lined pan was in play after a self-clean attempt; keep F03 with this oven rating plate. Record whether the door was latched, slightly open, or in a clean cycle. In a guest house, a foil-lined pan was in play during a holiday roast; keep F03 with this oven rating plate. In a farmhouse, a Dutch oven was in play while a probe was in the bird; keep F03 with this oven rating plate.

Signs

Symptoms you may notice

Write if heat was already in the cavity when the message appeared. In a breakfast bar, a rotisserie spit was in play mid-preheat; keep F03 with this oven rating plate while F03 is on the oven

Note bake, broil, steam, or clean if those words were on the control. In a butler pantry, a rotisserie spit was in play after a self-clean attempt; keep F03 with this oven rating plate while F03 is on the oven

Write if heat was already in the cavity when the message appeared. In a farmhouse, a probe was in play during a holiday roast; keep F03 with this oven rating plate while F03 is on the oven

Note bake, broil, steam, or clean if those words were on the control. In a galley, a probe was in play while a probe was in the bird; keep F03 with this oven rating plate while F03 is on the oven

Write if heat was already in the cavity when the message appeared. In a basement kitchenette, a pastry stone was in play mid-preheat; keep F03 with this oven rating plate while F03 is on the oven

Why it happens

Possible causes

Write F03 exactly as the oven showed it, including extra icons. In a carriage house, a foil-lined pan was in play during a holiday roast; keep F03 with this oven rating plate

Add the rating-plate model from this oven. In a pool cabana, a foil-lined pan was in play while a probe was in the bird; keep F03 with this oven rating plate

Record whether the door was latched, slightly open, or in a clean cycle. In a mudroom kitchen, a Dutch oven was in play mid-preheat; keep F03 with this oven rating plate

In a rental suite, a Dutch oven was in play after a self-clean attempt; keep F03 with this oven rating plate

Keep a photo of the control with your notes. In a breakfast bar, a roasting rack was in play during a holiday roast; keep F03 with this oven rating plate

Before you call

Safe checks you can make

These are simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.

Do not force a locked door during a clean cycle. In a mudroom kitchen, a pizza steel was in play during a holiday roast; keep F03 with this oven rating plate

Photograph the exact characters before they clear. In a rental suite, a pizza steel was in play while a probe was in the bird; keep F03 with this oven rating plate

Follow only a manufacturer-approved restart from your documentation. In a breakfast bar, a steam tray was in play mid-preheat; keep F03 with this oven rating plate

Turn the oven off and wait until it is cool enough to approach. In a butler pantry, a steam tray was in play after a self-clean attempt; keep F03 with this oven rating plate

Safety warning

Important safety warning

Important safety warning.

User controls only; no disassembly and no jumper wires. In a courtyard, a probe was in play after a self-clean attempt; keep F03 with this oven rating plate. Stop for smoke, sparks, or a burning smell from the cavity or panel. If you smell gas, do not operate switches; leave and contact the gas provider and a qualified technician. If you see smoke, sparks, or a burning smell, stop.

Please avoid

What not to attempt

Do not force a locked door or a jammed control while the oven is hot. Do not keep operating burners or oven modes if you smell gas. In a basement kitchenette, a pizza steel was in play after a self-clean attempt; keep F03 with this oven rating plate

Do not open internal panels or touch high-voltage terminals. In a tasting kitchen, a steam tray was in play during a holiday roast; keep F03 with this oven rating plate

Do not bypass door locks, safety switches, or interlocks. In a courtyard, a steam tray was in play while a probe was in the bird; keep F03 with this oven rating plate

Do not keep running the oven through a program that immediately fails. In a rooftop kitchen, a rotisserie spit was in play mid-preheat; keep F03 with this oven rating plate

Get help

When to call a technician

Book a diagnosis

Book oven service when F03 returns, when the appliance will not complete a normal program, or when any stop condition above is present. In a in-law kitchen, a foil-lined pan was in play after a self-clean attempt; keep F03 with this oven rating plate.

FAQ

Frequently asked questions

References

Sources & references

Rating-plate documents outrank any website listing. In a basement kitchenette, a steam tray was in play while a probe was in the bird; keep F03 with this oven rating plate.

About the author

Elena Voss

Independent content specialist

Elena Voss is the content specialist behind La Cornue appliance service guides. Elena researches common La Cornue appliance faults, translates technical service information into plain language, and works…

Areas of expertise

Château® ranges
CornuFé® ranges
Château® ranges
Ventilation hoods
Ovens & cooktops
Error-code diagnostics

Editorial responsibilities

Writes appliance guides and error-code explanations, coordinates technical review with experienced technicians, and updates content when guidance or products change.

Profile last reviewed September 5, 2026

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La Cornue Oven F03 Error Code

Error code overview

What this code means

Symptoms you may notice

Write if heat was already in the cavity when the message appeared. In a breakfast bar, a rotisserie spit was in play mid-preheat; keep F03 with this oven rating plate while F03 is on the oven

Note bake, broil, steam, or clean if those words were on the control. In a butler pantry, a rotisserie spit was in play after a self-clean attempt; keep F03 with this oven rating plate while F03 is on the oven

Write if heat was already in the cavity when the message appeared. In a farmhouse, a probe was in play during a holiday roast; keep F03 with this oven rating plate while F03 is on the oven

Note bake, broil, steam, or clean if those words were on the control. In a galley, a probe was in play while a probe was in the bird; keep F03 with this oven rating plate while F03 is on the oven

Write if heat was already in the cavity when the message appeared. In a basement kitchenette, a pastry stone was in play mid-preheat; keep F03 with this oven rating plate while F03 is on the oven

Possible causes

Write F03 exactly as the oven showed it, including extra icons. In a carriage house, a foil-lined pan was in play during a holiday roast; keep F03 with this oven rating plate

Add the rating-plate model from this oven. In a pool cabana, a foil-lined pan was in play while a probe was in the bird; keep F03 with this oven rating plate

Record whether the door was latched, slightly open, or in a clean cycle. In a mudroom kitchen, a Dutch oven was in play mid-preheat; keep F03 with this oven rating plate

In a rental suite, a Dutch oven was in play after a self-clean attempt; keep F03 with this oven rating plate

Keep a photo of the control with your notes. In a breakfast bar, a roasting rack was in play during a holiday roast; keep F03 with this oven rating plate

Safe checks you can make

Do not force a locked door during a clean cycle. In a mudroom kitchen, a pizza steel was in play during a holiday roast; keep F03 with this oven rating plate

Photograph the exact characters before they clear. In a rental suite, a pizza steel was in play while a probe was in the bird; keep F03 with this oven rating plate

Follow only a manufacturer-approved restart from your documentation. In a breakfast bar, a steam tray was in play mid-preheat; keep F03 with this oven rating plate

Turn the oven off and wait until it is cool enough to approach. In a butler pantry, a steam tray was in play after a self-clean attempt; keep F03 with this oven rating plate

Important safety warning

Important safety warning.

What not to attempt

Do not force a locked door or a jammed control while the oven is hot. Do not keep operating burners or oven modes if you smell gas. In a basement kitchenette, a pizza steel was in play after a self-clean attempt; keep F03 with this oven rating plate

Do not open internal panels or touch high-voltage terminals. In a tasting kitchen, a steam tray was in play during a holiday roast; keep F03 with this oven rating plate

Do not bypass door locks, safety switches, or interlocks. In a courtyard, a steam tray was in play while a probe was in the bird; keep F03 with this oven rating plate

Do not keep running the oven through a program that immediately fails. In a rooftop kitchen, a rotisserie spit was in play mid-preheat; keep F03 with this oven rating plate

When to call a technician

Book a diagnosis

Seeing this code on your La Cornue appliance?

Frequently asked questions

Sources & references

Ready to restore your La Cornue appliance?

Tell us what’s wrong — we’ll take it from there

La Cornue Oven F03 Error Code

Write if heat was already in the cavity when the message appeared. In a breakfast bar, a rotisserie spit was in play mid-preheat; keep F03 with this oven rating plate while F03 is on the oven

Note bake, broil, steam, or clean if those words were on the control. In a butler pantry, a rotisserie spit was in play after a self-clean attempt; keep F03 with this oven rating plate while F03 is on the oven

Write if heat was already in the cavity when the message appeared. In a farmhouse, a probe was in play during a holiday roast; keep F03 with this oven rating plate while F03 is on the oven

Note bake, broil, steam, or clean if those words were on the control. In a galley, a probe was in play while a probe was in the bird; keep F03 with this oven rating plate while F03 is on the oven

Write if heat was already in the cavity when the message appeared. In a basement kitchenette, a pastry stone was in play mid-preheat; keep F03 with this oven rating plate while F03 is on the oven

Write F03 exactly as the oven showed it, including extra icons. In a carriage house, a foil-lined pan was in play during a holiday roast; keep F03 with this oven rating plate

Add the rating-plate model from this oven. In a pool cabana, a foil-lined pan was in play while a probe was in the bird; keep F03 with this oven rating plate

Record whether the door was latched, slightly open, or in a clean cycle. In a mudroom kitchen, a Dutch oven was in play mid-preheat; keep F03 with this oven rating plate

In a rental suite, a Dutch oven was in play after a self-clean attempt; keep F03 with this oven rating plate

Keep a photo of the control with your notes. In a breakfast bar, a roasting rack was in play during a holiday roast; keep F03 with this oven rating plate

Do not force a locked door during a clean cycle. In a mudroom kitchen, a pizza steel was in play during a holiday roast; keep F03 with this oven rating plate

Photograph the exact characters before they clear. In a rental suite, a pizza steel was in play while a probe was in the bird; keep F03 with this oven rating plate

Follow only a manufacturer-approved restart from your documentation. In a breakfast bar, a steam tray was in play mid-preheat; keep F03 with this oven rating plate

Turn the oven off and wait until it is cool enough to approach. In a butler pantry, a steam tray was in play after a self-clean attempt; keep F03 with this oven rating plate

Important safety warning.

Do not force a locked door or a jammed control while the oven is hot. Do not keep operating burners or oven modes if you smell gas. In a basement kitchenette, a pizza steel was in play after a self-clean attempt; keep F03 with this oven rating plate

Do not open internal panels or touch high-voltage terminals. In a tasting kitchen, a steam tray was in play during a holiday roast; keep F03 with this oven rating plate

Do not bypass door locks, safety switches, or interlocks. In a courtyard, a steam tray was in play while a probe was in the bird; keep F03 with this oven rating plate

Do not keep running the oven through a program that immediately fails. In a rooftop kitchen, a rotisserie spit was in play mid-preheat; keep F03 with this oven rating plate

Book a diagnosis

Seeing this code on your La Cornue appliance?

Oven Repair

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La Cornue Oven F05 Error Code

La Cornue Oven F06 Error Code

01 What is worth writing down before a visit about F03?

02 Where do I find the model information that belongs with F03?

03 Will this page tell a technician which board to replace for F03?

04 Should I keep running this oven while F03 is on the control?

Ready to restore your La Cornue appliance?

Tell us what’s wrong — we’ll take it from there