Can a restart permanently clear E03 on this cooktop?

In a rental suite, a stockpot was in play while a kettle was coming up; keep E03 with this cooktop rating plate. E03 stays display text on this cooktop; it is not a spare-part name.

Is E03 enough information to order a part?

In a breakfast bar, a grill press was in play during a stir-fry; keep E03 with this cooktop rating plate. E03 stays display text on this cooktop; it is not a spare-part name.

How should I describe E03 if the display later goes blank?

In a butler pantry, a grill press was in play after a boil-dry scare; keep E03 with this cooktop rating plate. E03 stays display text on this cooktop; it is not a spare-part name.

La Cornue Cooktop E03 Error Code

E03 on this La Cornue cooktop is the exact display to record, not a published diagnosis. In a island, a grill press was in play after a boil-dry scare; keep E03 with this cooktop rating plate.

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Reviewed by Elena Voss · Last reviewed September 5, 2026

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

Error code E03

Appliance Cooktop

Quick answer

E03 archive note for a La Cornue cooktop. Observational only; no claimed mapping. In a studio, a copper bowl was in play on a quiet morning; keep E03 with this cooktop rating plate.

Model compatibility: La Cornue reuses codes across series and model years, so E03 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

Record if a zone stayed hot, went dark, or never started. That context sits beside E03, not underneath a claimed meaning. In a show kitchen, an empty grate was in play while a kettle was coming up; keep E03 with this cooktop rating plate. In a tasting kitchen, a copper bowl was in play after a boil-dry scare; keep E03 with this cooktop rating plate. In a pool cabana, a copper bowl was in play on a quiet morning; keep E03 with this cooktop rating plate. In a chef line, an empty grate was in play while a kettle was coming up; keep E03 with this cooktop rating plate.

Signs

Symptoms you may notice

Say whether the control locked or kept chirping after the message. In a rooftop kitchen, a tea kettle was in play after a boil-dry scare; keep E03 with this cooktop rating plate while E03 is on the cooktop

Write whether the cooktop was gas, induction, or another surface type if you know it. In a ADU, a tea kettle was in play on a quiet morning; keep E03 with this cooktop rating plate while E03 is on the cooktop

Say whether the control locked or kept chirping after the message. In a pool house, a plancha was in play while a kettle was coming up; keep E03 with this cooktop rating plate while E03 is on the cooktop

Write whether the cooktop was gas, induction, or another surface type if you know it. In a guest house, a plancha was in play during a stir-fry; keep E03 with this cooktop rating plate while E03 is on the cooktop

Why it happens

Possible causes

Write E03 exactly as the cooktop showed it, including extra icons. In a galley, a wok ring was in play during a stir-fry; keep E03 with this cooktop rating plate

Add the rating-plate model from this cooktop. In a basement kitchenette, a simmer plate was in play during a stir-fry; keep E03 with this cooktop rating plate

Record if a zone stayed hot, went dark, or never started. In a tasting kitchen, a stockpot was in play after a boil-dry scare; keep E03 with this cooktop rating plate

In a courtyard, a stockpot was in play on a quiet morning; keep E03 with this cooktop 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.

Photograph the display while the characters are still visible. In a scullery, a grill press was in play after a boil-dry scare; keep E03 with this cooktop rating plate

Try a manufacturer-approved restart only if the booklet describes one. In a outdoor kitchen, a grill press was in play on a quiet morning; keep E03 with this cooktop rating plate

Turn every zone off and let glass or grates cool before you look closely. In a chef line, a copper bowl was in play while a kettle was coming up; keep E03 with this cooktop rating plate

Safety warning

Important safety warning

Important safety warning.

If the outlet is wet, skip unplugging and isolate power another safe way or wait for help. In a scullery, a wok ring was in play while a kettle was coming up; keep E03 with this cooktop rating plate. Stop for smoke, sparks, or a burning smell at the surface. 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 scrape, paint over, or discard the rating plate. Do not keep operating burners or oven modes if you smell gas. In a galley, an empty grate was in play after a boil-dry scare; keep E03 with this cooktop rating plate

Do not force a locked door or a jammed control while the cooktop is hot. In a basement kitchenette, a tea kettle was in play on a quiet morning; keep E03 with this cooktop rating plate

Do not open internal panels or touch high-voltage terminals. In a tasting kitchen, a plancha was in play while a kettle was coming up; keep E03 with this cooktop rating plate

Get help

When to call a technician

Book a diagnosis

A diagnosis visit is the right next step if E03 persists, if you cannot safely reach the outlet, or if the cooktop behaves differently after the message. In a tasting kitchen, a copper bowl was in play after a boil-dry scare; keep E03 with this cooktop rating plate.

FAQ

Frequently asked questions

References

Sources & references

This archive is observational and does not replace the papers that came with the cooktop. In a studio, an empty grate was in play while a kettle was coming up; keep E03 with this cooktop 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 Cooktop E03 Error Code

Error code overview

What this code means

Symptoms you may notice

Say whether the control locked or kept chirping after the message. In a rooftop kitchen, a tea kettle was in play after a boil-dry scare; keep E03 with this cooktop rating plate while E03 is on the cooktop

Write whether the cooktop was gas, induction, or another surface type if you know it. In a ADU, a tea kettle was in play on a quiet morning; keep E03 with this cooktop rating plate while E03 is on the cooktop

Say whether the control locked or kept chirping after the message. In a pool house, a plancha was in play while a kettle was coming up; keep E03 with this cooktop rating plate while E03 is on the cooktop

Write whether the cooktop was gas, induction, or another surface type if you know it. In a guest house, a plancha was in play during a stir-fry; keep E03 with this cooktop rating plate while E03 is on the cooktop

Possible causes

Write E03 exactly as the cooktop showed it, including extra icons. In a galley, a wok ring was in play during a stir-fry; keep E03 with this cooktop rating plate

Add the rating-plate model from this cooktop. In a basement kitchenette, a simmer plate was in play during a stir-fry; keep E03 with this cooktop rating plate

Record if a zone stayed hot, went dark, or never started. In a tasting kitchen, a stockpot was in play after a boil-dry scare; keep E03 with this cooktop rating plate

In a courtyard, a stockpot was in play on a quiet morning; keep E03 with this cooktop rating plate

Safe checks you can make

Photograph the display while the characters are still visible. In a scullery, a grill press was in play after a boil-dry scare; keep E03 with this cooktop rating plate

Try a manufacturer-approved restart only if the booklet describes one. In a outdoor kitchen, a grill press was in play on a quiet morning; keep E03 with this cooktop rating plate

Turn every zone off and let glass or grates cool before you look closely. In a chef line, a copper bowl was in play while a kettle was coming up; keep E03 with this cooktop rating plate

Important safety warning

Important safety warning.

What not to attempt

Do not scrape, paint over, or discard the rating plate. Do not keep operating burners or oven modes if you smell gas. In a galley, an empty grate was in play after a boil-dry scare; keep E03 with this cooktop rating plate

Do not force a locked door or a jammed control while the cooktop is hot. In a basement kitchenette, a tea kettle was in play on a quiet morning; keep E03 with this cooktop rating plate

Do not open internal panels or touch high-voltage terminals. In a tasting kitchen, a plancha was in play while a kettle was coming up; keep E03 with this cooktop 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 Cooktop E03 Error Code

Say whether the control locked or kept chirping after the message. In a rooftop kitchen, a tea kettle was in play after a boil-dry scare; keep E03 with this cooktop rating plate while E03 is on the cooktop

Write whether the cooktop was gas, induction, or another surface type if you know it. In a ADU, a tea kettle was in play on a quiet morning; keep E03 with this cooktop rating plate while E03 is on the cooktop

Say whether the control locked or kept chirping after the message. In a pool house, a plancha was in play while a kettle was coming up; keep E03 with this cooktop rating plate while E03 is on the cooktop

Write whether the cooktop was gas, induction, or another surface type if you know it. In a guest house, a plancha was in play during a stir-fry; keep E03 with this cooktop rating plate while E03 is on the cooktop

Write E03 exactly as the cooktop showed it, including extra icons. In a galley, a wok ring was in play during a stir-fry; keep E03 with this cooktop rating plate

Add the rating-plate model from this cooktop. In a basement kitchenette, a simmer plate was in play during a stir-fry; keep E03 with this cooktop rating plate

Record if a zone stayed hot, went dark, or never started. In a tasting kitchen, a stockpot was in play after a boil-dry scare; keep E03 with this cooktop rating plate

In a courtyard, a stockpot was in play on a quiet morning; keep E03 with this cooktop rating plate

Photograph the display while the characters are still visible. In a scullery, a grill press was in play after a boil-dry scare; keep E03 with this cooktop rating plate

Try a manufacturer-approved restart only if the booklet describes one. In a outdoor kitchen, a grill press was in play on a quiet morning; keep E03 with this cooktop rating plate

Turn every zone off and let glass or grates cool before you look closely. In a chef line, a copper bowl was in play while a kettle was coming up; keep E03 with this cooktop rating plate

Important safety warning.

Do not scrape, paint over, or discard the rating plate. Do not keep operating burners or oven modes if you smell gas. In a galley, an empty grate was in play after a boil-dry scare; keep E03 with this cooktop rating plate

Do not force a locked door or a jammed control while the cooktop is hot. In a basement kitchenette, a tea kettle was in play on a quiet morning; keep E03 with this cooktop rating plate

Do not open internal panels or touch high-voltage terminals. In a tasting kitchen, a plancha was in play while a kettle was coming up; keep E03 with this cooktop rating plate

Book a diagnosis

Seeing this code on your La Cornue appliance?

Cooktop Repair

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01 Can a restart permanently clear E03 on this cooktop?

02 Is E03 enough information to order a part?

03 How should I describe E03 if the display later goes blank?

Ready to restore your La Cornue appliance?

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