How should I describe E20 if the display later goes blank?

In a penthouse, a Dutch oven was in play after a self-clean attempt; keep E20 with this oven rating plate. E20 stays display text on this oven; it is not a spare-part name.

What is worth writing down before a visit about E20?

In a carriage house, a roasting rack was in play during a holiday roast; keep E20 with this oven rating plate. E20 stays display text on this oven; it is not a spare-part name.

Where do I find the model information that belongs with E20?

In a pool cabana, a roasting rack was in play while a probe was in the bird; keep E20 with this oven rating plate. E20 stays display text on this oven; it is not a spare-part name.

Will this page tell a technician which board to replace for E20?

In a mudroom kitchen, a pizza steel was in play mid-preheat; keep E20 with this oven rating plate. E20 stays display text on this oven; it is not a spare-part name.

La Cornue Oven E20 Error Code

A La Cornue oven showing E20 needs notes from the kitchen, not a universal fault name from a website. In a in-law kitchen, a Dutch oven was in play mid-preheat; keep E20 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 E20

Appliance Oven

Quick answer

Seeing E20 on a oven? Photograph the control and stop if hazards are present. In a penthouse, a Dutch oven was in play after a self-clean attempt; keep E20 with this oven rating plate.

Model compatibility: La Cornue reuses codes across series and model years, so E20 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

Start with the live control: E20. Write if heat was already in the cavity when the message appeared. In a carriage house, a roasting rack was in play during a holiday roast; keep E20 with this oven rating plate. In a pool house, a Dutch oven was in play mid-preheat; keep E20 with this oven rating plate. Nothing here names a single failed part for every series. In a butler pantry, a Dutch oven was in play after a self-clean attempt; keep E20 with this oven rating plate. In a terrace, a roasting rack was in play during a holiday roast; keep E20 with this oven rating plate.

Signs

Symptoms you may notice

Say whether the oven lamp, fan, or probe was in use. In a galley, a pastry stone was in play mid-preheat; keep E20 with this oven rating plate while E20 is on the oven

Record whether the door was latched, slightly open, or in a clean cycle. In a basement kitchenette, a foil-lined pan was in play mid-preheat; keep E20 with this oven rating plate while E20 is on the oven

Say whether the oven lamp, fan, or probe was in use. In a tasting kitchen, a Dutch oven was in play after a self-clean attempt; keep E20 with this oven rating plate while E20 is on the oven

Record whether the door was latched, slightly open, or in a clean cycle. In a courtyard, a Dutch oven was in play during a holiday roast; keep E20 with this oven rating plate while E20 is on the oven

Say whether the oven lamp, fan, or probe was in use. In a rooftop kitchen, a roasting rack was in play while a probe was in the bird; keep E20 with this oven rating plate while E20 is on the oven

Why it happens

Possible causes

Write E20 exactly as the oven showed it, including extra icons. In a rental suite, a roasting rack was in play during a holiday roast; keep E20 with this oven rating plate

Add the rating-plate model from this oven. In a breakfast bar, a pizza steel was in play while a probe was in the bird; keep E20 with this oven rating plate

Write if heat was already in the cavity when the message appeared. In a butler pantry, a pizza steel was in play mid-preheat; keep E20 with this oven rating plate

In a farmhouse, a steam tray was in play after a self-clean attempt; keep E20 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.

Photograph the exact characters before they clear. In a rooftop kitchen, a steam tray was in play after a self-clean attempt; keep E20 with this oven rating plate

Follow only a manufacturer-approved restart from your documentation. In a ADU, a steam tray was in play during a holiday roast; keep E20 with this oven rating plate

Turn the oven off and wait until it is cool enough to approach. In a pool house, a rotisserie spit was in play while a probe was in the bird; keep E20 with this oven rating plate

Safety warning

Important safety warning

Important safety warning.

A burning smell or visible spark ends home checks immediately. In a studio, a roasting rack was in play after a self-clean attempt; keep E20 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 keep running the oven through a program that immediately fails. Do not keep operating burners or oven modes if you smell gas. In a rooftop kitchen, a Dutch oven was in play during a holiday roast; keep E20 with this oven rating plate

Do not order a part from E20 without an on-site confirmation. In a ADU, a Dutch oven was in play while a probe was in the bird; keep E20 with this oven rating plate

Do not scrape, paint over, or discard the rating plate. In a pool house, a roasting rack was in play mid-preheat; keep E20 with this oven rating plate

Get help

When to call a technician

Book a diagnosis

Do not wait through repeated failed cycles. If E20 keeps coming back on this oven, schedule service with your notes. In a pool house, a Dutch oven was in play mid-preheat; keep E20 with this oven rating plate.

FAQ

Frequently asked questions

References

Sources & references

This archive is observational and does not replace the papers that came with the oven. In a penthouse, a probe was in play while a probe was in the bird; keep E20 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 E20 Error Code

Error code overview

What this code means

Symptoms you may notice

Say whether the oven lamp, fan, or probe was in use. In a galley, a pastry stone was in play mid-preheat; keep E20 with this oven rating plate while E20 is on the oven

Record whether the door was latched, slightly open, or in a clean cycle. In a basement kitchenette, a foil-lined pan was in play mid-preheat; keep E20 with this oven rating plate while E20 is on the oven

Say whether the oven lamp, fan, or probe was in use. In a tasting kitchen, a Dutch oven was in play after a self-clean attempt; keep E20 with this oven rating plate while E20 is on the oven

Record whether the door was latched, slightly open, or in a clean cycle. In a courtyard, a Dutch oven was in play during a holiday roast; keep E20 with this oven rating plate while E20 is on the oven

Say whether the oven lamp, fan, or probe was in use. In a rooftop kitchen, a roasting rack was in play while a probe was in the bird; keep E20 with this oven rating plate while E20 is on the oven

Possible causes

Write E20 exactly as the oven showed it, including extra icons. In a rental suite, a roasting rack was in play during a holiday roast; keep E20 with this oven rating plate

Add the rating-plate model from this oven. In a breakfast bar, a pizza steel was in play while a probe was in the bird; keep E20 with this oven rating plate

Write if heat was already in the cavity when the message appeared. In a butler pantry, a pizza steel was in play mid-preheat; keep E20 with this oven rating plate

In a farmhouse, a steam tray was in play after a self-clean attempt; keep E20 with this oven rating plate

Safe checks you can make

Photograph the exact characters before they clear. In a rooftop kitchen, a steam tray was in play after a self-clean attempt; keep E20 with this oven rating plate

Follow only a manufacturer-approved restart from your documentation. In a ADU, a steam tray was in play during a holiday roast; keep E20 with this oven rating plate

Turn the oven off and wait until it is cool enough to approach. In a pool house, a rotisserie spit was in play while a probe was in the bird; keep E20 with this oven rating plate

Important safety warning

Important safety warning.

What not to attempt

Do not keep running the oven through a program that immediately fails. Do not keep operating burners or oven modes if you smell gas. In a rooftop kitchen, a Dutch oven was in play during a holiday roast; keep E20 with this oven rating plate

Do not order a part from E20 without an on-site confirmation. In a ADU, a Dutch oven was in play while a probe was in the bird; keep E20 with this oven rating plate

Do not scrape, paint over, or discard the rating plate. In a pool house, a roasting rack was in play mid-preheat; keep E20 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 E20 Error Code

Say whether the oven lamp, fan, or probe was in use. In a galley, a pastry stone was in play mid-preheat; keep E20 with this oven rating plate while E20 is on the oven

Record whether the door was latched, slightly open, or in a clean cycle. In a basement kitchenette, a foil-lined pan was in play mid-preheat; keep E20 with this oven rating plate while E20 is on the oven

Say whether the oven lamp, fan, or probe was in use. In a tasting kitchen, a Dutch oven was in play after a self-clean attempt; keep E20 with this oven rating plate while E20 is on the oven

Record whether the door was latched, slightly open, or in a clean cycle. In a courtyard, a Dutch oven was in play during a holiday roast; keep E20 with this oven rating plate while E20 is on the oven

Say whether the oven lamp, fan, or probe was in use. In a rooftop kitchen, a roasting rack was in play while a probe was in the bird; keep E20 with this oven rating plate while E20 is on the oven

Write E20 exactly as the oven showed it, including extra icons. In a rental suite, a roasting rack was in play during a holiday roast; keep E20 with this oven rating plate

Add the rating-plate model from this oven. In a breakfast bar, a pizza steel was in play while a probe was in the bird; keep E20 with this oven rating plate

Write if heat was already in the cavity when the message appeared. In a butler pantry, a pizza steel was in play mid-preheat; keep E20 with this oven rating plate

In a farmhouse, a steam tray was in play after a self-clean attempt; keep E20 with this oven rating plate

Photograph the exact characters before they clear. In a rooftop kitchen, a steam tray was in play after a self-clean attempt; keep E20 with this oven rating plate

Follow only a manufacturer-approved restart from your documentation. In a ADU, a steam tray was in play during a holiday roast; keep E20 with this oven rating plate

Turn the oven off and wait until it is cool enough to approach. In a pool house, a rotisserie spit was in play while a probe was in the bird; keep E20 with this oven rating plate

Important safety warning.

Do not keep running the oven through a program that immediately fails. Do not keep operating burners or oven modes if you smell gas. In a rooftop kitchen, a Dutch oven was in play during a holiday roast; keep E20 with this oven rating plate

Do not order a part from E20 without an on-site confirmation. In a ADU, a Dutch oven was in play while a probe was in the bird; keep E20 with this oven rating plate

Do not scrape, paint over, or discard the rating plate. In a pool house, a roasting rack was in play mid-preheat; keep E20 with this oven rating plate

Book a diagnosis

Seeing this code on your La Cornue appliance?

Oven Repair

La Cornue Oven F01 Error Code

La Cornue Oven F02 Error Code

La Cornue Oven F03 Error Code

01 How should I describe E20 if the display later goes blank?

02 What is worth writing down before a visit about E20?

03 Where do I find the model information that belongs with E20?

04 Will this page tell a technician which board to replace for E20?

Ready to restore your La Cornue appliance?

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