Will this page tell a technician which board to replace for E18?

In a guest house, a drip tray was in play during a brew; keep E18 with this coffee machine rating plate. E18 stays display text on this coffee machine; it is not a spare-part name.

Should I keep running this coffee machine while E18 is on the control?

In a scullery, a water tank was in play during a brew; keep E18 with this coffee machine rating plate. E18 stays display text on this coffee machine; it is not a spare-part name.

Does E18 name the same repair on every La Cornue coffee machine?

In a outdoor kitchen, a water tank was in play during a brew; keep E18 with this coffee machine rating plate. E18 stays display text on this coffee machine; it is not a spare-part name.

La Cornue Coffee Machine E18 Error Code

Q: What should I do first if E18 appears during cooking or a cycle?

In a chef line, a descaling bottle still sealed was in play before the first cup; keep E18 with this coffee machine rating plate. E18 stays display text on this coffee machine; it is not a spare-part name.

Treat E18 as characters on a La Cornue coffee machine control. The same letters can be reused on later series. In a studio, a descaling bottle still sealed was in play during a brew; keep E18 with this coffee machine 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 E18

Appliance Coffee Machine

Quick answer

E18 — display text for a La Cornue coffee machine. Bring rating-plate details when you book. In a show kitchen, a milk pitcher was in play during a brew; keep E18 with this coffee machine rating plate.

Model compatibility: La Cornue reuses codes across series and model years, so E18 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

This listing exists so E18 on a coffee machine is documented, not decoded into a myth. In a terrace, a milk pitcher was in play during a brew; keep E18 with this coffee machine rating plate. Record whether the tank, tray, or door was recently moved. In a courtyard, a milk pitcher was in play while steaming milk; keep E18 with this coffee machine rating plate. In a mudroom kitchen, a drip tray was in play after a rinse prompt; keep E18 with this coffee machine rating plate. In a island, a water tank was in play before the first cup; keep E18 with this coffee machine rating plate.

Signs

Symptoms you may notice

Write if flow, steam, or heat had already started. In a outdoor kitchen, a drip tray was in play during a brew; keep E18 with this coffee machine rating plate while E18 is on the coffee machine

Note brew, steam, rinse, or standby if those words were on the control. In a chef line, a water tank was in play during a brew; keep E18 with this coffee machine rating plate while E18 is on the coffee machine

Write if flow, steam, or heat had already started. In a island, a water tank was in play during a brew; keep E18 with this coffee machine rating plate while E18 is on the coffee machine

Note brew, steam, rinse, or standby if those words were on the control. In a studio, a descaling bottle still sealed was in play before the first cup; keep E18 with this coffee machine rating plate while E18 is on the coffee machine

Write if flow, steam, or heat had already started. In a show kitchen, a milk pitcher was in play before the first cup; keep E18 with this coffee machine rating plate while E18 is on the coffee machine

Why it happens

Possible causes

Write E18 exactly as the coffee machine showed it, including extra icons. In a ADU, a water tank was in play after a rinse prompt; keep E18 with this coffee machine rating plate

Add the rating-plate model from this coffee machine. In a pool house, a descaling bottle still sealed was in play while steaming milk; keep E18 with this coffee machine rating plate

Record whether the tank, tray, or door was recently moved. In a guest house, a descaling bottle still sealed was in play while steaming milk; keep E18 with this coffee machine rating plate

In a scullery, a milk pitcher was in play while steaming milk; keep E18 with this coffee machine rating plate

Keep a photo of the control with your notes. In a outdoor kitchen, a milk pitcher was in play while steaming milk; keep E18 with this coffee machine 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 open a boiler or unclip internal hoses. In a guest house, a descaling bottle still sealed was in play during a brew; keep E18 with this coffee machine rating plate

Photograph the exact characters. In a scullery, a milk pitcher was in play during a brew; keep E18 with this coffee machine rating plate

Use a manufacturer-approved restart only if one is documented. In a outdoor kitchen, a milk pitcher was in play during a brew; keep E18 with this coffee machine rating plate

Confirm the tank or tray is seated the way the booklet shows, without forcing it. In a chef line, a portafilter was in play during a brew; keep E18 with this coffee machine rating plate

Safety warning

Important safety warning

Important safety warning.

User controls only; no disassembly and no jumper wires. In a in-law kitchen, a milk pitcher was in play while steaming milk; keep E18 with this coffee machine rating plate. Do not keep requesting drinks after the same message returns. If water is near electrical parts, do not keep using the appliance. 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 coffee machine is hot. Do not keep running water-using programs if liquid is at the outlet. In a show kitchen, a descaling bottle still sealed was in play after a rinse prompt; keep E18 with this coffee machine rating plate

Do not open internal panels or touch high-voltage terminals. In a terrace, a descaling bottle still sealed was in play after a rinse prompt; keep E18 with this coffee machine rating plate

Do not bypass door locks, safety switches, or interlocks. In a in-law kitchen, a milk pitcher was in play after a rinse prompt; keep E18 with this coffee machine rating plate

Do not keep running the coffee machine through a program that immediately fails. In a penthouse, a milk pitcher was in play after a rinse prompt; keep E18 with this coffee machine rating plate

Get help

When to call a technician

Book a diagnosis

Book coffee machine service when E18 returns, when the appliance will not complete a normal program, or when any stop condition above is present. In a courtyard, a milk pitcher was in play while steaming milk; keep E18 with this coffee machine rating plate.

FAQ

Frequently asked questions

References

Sources & references

Rating-plate documents outrank any website listing. In a show kitchen, a drip tray was in play after a rinse prompt; keep E18 with this coffee machine 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 Coffee Machine E18 Error Code

Error code overview

What this code means

Symptoms you may notice

Write if flow, steam, or heat had already started. In a outdoor kitchen, a drip tray was in play during a brew; keep E18 with this coffee machine rating plate while E18 is on the coffee machine

Note brew, steam, rinse, or standby if those words were on the control. In a chef line, a water tank was in play during a brew; keep E18 with this coffee machine rating plate while E18 is on the coffee machine

Write if flow, steam, or heat had already started. In a island, a water tank was in play during a brew; keep E18 with this coffee machine rating plate while E18 is on the coffee machine

Note brew, steam, rinse, or standby if those words were on the control. In a studio, a descaling bottle still sealed was in play before the first cup; keep E18 with this coffee machine rating plate while E18 is on the coffee machine

Write if flow, steam, or heat had already started. In a show kitchen, a milk pitcher was in play before the first cup; keep E18 with this coffee machine rating plate while E18 is on the coffee machine

Possible causes

Write E18 exactly as the coffee machine showed it, including extra icons. In a ADU, a water tank was in play after a rinse prompt; keep E18 with this coffee machine rating plate

Add the rating-plate model from this coffee machine. In a pool house, a descaling bottle still sealed was in play while steaming milk; keep E18 with this coffee machine rating plate

Record whether the tank, tray, or door was recently moved. In a guest house, a descaling bottle still sealed was in play while steaming milk; keep E18 with this coffee machine rating plate

In a scullery, a milk pitcher was in play while steaming milk; keep E18 with this coffee machine rating plate

Keep a photo of the control with your notes. In a outdoor kitchen, a milk pitcher was in play while steaming milk; keep E18 with this coffee machine rating plate

Safe checks you can make

Do not open a boiler or unclip internal hoses. In a guest house, a descaling bottle still sealed was in play during a brew; keep E18 with this coffee machine rating plate

Photograph the exact characters. In a scullery, a milk pitcher was in play during a brew; keep E18 with this coffee machine rating plate

Use a manufacturer-approved restart only if one is documented. In a outdoor kitchen, a milk pitcher was in play during a brew; keep E18 with this coffee machine rating plate

Confirm the tank or tray is seated the way the booklet shows, without forcing it. In a chef line, a portafilter was in play during a brew; keep E18 with this coffee machine rating plate

Important safety warning

Important safety warning.

What not to attempt

Do not force a locked door or a jammed control while the coffee machine is hot. Do not keep running water-using programs if liquid is at the outlet. In a show kitchen, a descaling bottle still sealed was in play after a rinse prompt; keep E18 with this coffee machine rating plate

Do not open internal panels or touch high-voltage terminals. In a terrace, a descaling bottle still sealed was in play after a rinse prompt; keep E18 with this coffee machine rating plate

Do not bypass door locks, safety switches, or interlocks. In a in-law kitchen, a milk pitcher was in play after a rinse prompt; keep E18 with this coffee machine rating plate

Do not keep running the coffee machine through a program that immediately fails. In a penthouse, a milk pitcher was in play after a rinse prompt; keep E18 with this coffee machine 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 Coffee Machine E18 Error Code

Write if flow, steam, or heat had already started. In a outdoor kitchen, a drip tray was in play during a brew; keep E18 with this coffee machine rating plate while E18 is on the coffee machine

Note brew, steam, rinse, or standby if those words were on the control. In a chef line, a water tank was in play during a brew; keep E18 with this coffee machine rating plate while E18 is on the coffee machine

Write if flow, steam, or heat had already started. In a island, a water tank was in play during a brew; keep E18 with this coffee machine rating plate while E18 is on the coffee machine

Note brew, steam, rinse, or standby if those words were on the control. In a studio, a descaling bottle still sealed was in play before the first cup; keep E18 with this coffee machine rating plate while E18 is on the coffee machine

Write if flow, steam, or heat had already started. In a show kitchen, a milk pitcher was in play before the first cup; keep E18 with this coffee machine rating plate while E18 is on the coffee machine

Write E18 exactly as the coffee machine showed it, including extra icons. In a ADU, a water tank was in play after a rinse prompt; keep E18 with this coffee machine rating plate

Add the rating-plate model from this coffee machine. In a pool house, a descaling bottle still sealed was in play while steaming milk; keep E18 with this coffee machine rating plate

Record whether the tank, tray, or door was recently moved. In a guest house, a descaling bottle still sealed was in play while steaming milk; keep E18 with this coffee machine rating plate

In a scullery, a milk pitcher was in play while steaming milk; keep E18 with this coffee machine rating plate

Keep a photo of the control with your notes. In a outdoor kitchen, a milk pitcher was in play while steaming milk; keep E18 with this coffee machine rating plate

Do not open a boiler or unclip internal hoses. In a guest house, a descaling bottle still sealed was in play during a brew; keep E18 with this coffee machine rating plate

Photograph the exact characters. In a scullery, a milk pitcher was in play during a brew; keep E18 with this coffee machine rating plate

Use a manufacturer-approved restart only if one is documented. In a outdoor kitchen, a milk pitcher was in play during a brew; keep E18 with this coffee machine rating plate

Confirm the tank or tray is seated the way the booklet shows, without forcing it. In a chef line, a portafilter was in play during a brew; keep E18 with this coffee machine rating plate

Important safety warning.

Do not force a locked door or a jammed control while the coffee machine is hot. Do not keep running water-using programs if liquid is at the outlet. In a show kitchen, a descaling bottle still sealed was in play after a rinse prompt; keep E18 with this coffee machine rating plate

Do not open internal panels or touch high-voltage terminals. In a terrace, a descaling bottle still sealed was in play after a rinse prompt; keep E18 with this coffee machine rating plate

Do not bypass door locks, safety switches, or interlocks. In a in-law kitchen, a milk pitcher was in play after a rinse prompt; keep E18 with this coffee machine rating plate

Do not keep running the coffee machine through a program that immediately fails. In a penthouse, a milk pitcher was in play after a rinse prompt; keep E18 with this coffee machine rating plate

Book a diagnosis

Seeing this code on your La Cornue appliance?

La Cornue Coffee Machine E19 Error Code

La Cornue Coffee Machine E20 Error Code

La Cornue Coffee Machine E01 Error Code

01 Will this page tell a technician which board to replace for E18?

02 Should I keep running this coffee machine while E18 is on the control?

03 Does E18 name the same repair on every La Cornue coffee machine?

04 What should I do first if E18 appears during cooking or a cycle?

Ready to restore your La Cornue appliance?

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