---
title: "Thermador cooktop error code E9000"
description: "Thermador cooktop error code E9000: thermador error code E9000: the voltage at the appliance is outside the range it will run on."
url: "https://thermadormiami.support/error-codes/error-code-e9000-cooktop/"
date_modified: "2026-08-18"
Appliance type: "Cooktops & rangetops, Professional ranges"
---


# Thermador cooktop error code E9000

Error code

# Thermador cooktop error code E9000

Thermador error code E9000: the voltage at the appliance is outside the range it will run on. What the code covers, what to check first, and what it does not tell you — on cooktops & rangetops and professional ranges.

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## Book a diagnostic visit

Your model number and a line about what it is doing is enough to get started.

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What we can confirm

## Code E9000, from the manufacturer’s own documentation

A code is only meaningful together with the generation showing it — the same two digits mean different things across generations.

The code

E9000

The voltage at the appliance is outside the range it will run on

or call [(305) 846-7685](tel:+13058467685)

What it narrows down to

Supply voltage wrong

What you are probably seeing

[Induction zone switches itself off](https://thermadormiami.support/symptoms/cooktop-zone-turns-off/)

Diagnostic

From $95, credited to the repair

What it looks like from the kitchen

## The symptom this code usually arrives with

A code names the subsystem; the symptom is what sent you to look at the display in the first place. That page says what it usually turns out to be, cheapest cause first.

- Induction zone switches itself off
					A zone that stops mid-cook, or a cooktop that shuts down after a long session at high power. On induction that is nearly always the appliance protecting itself, and it costs nothing to confirm.

														One zone stops during cooking

														Everything shuts down together

														A letter-F code on the display

								[

				What it usually means

			](https://thermadormiami.support/symptoms/cooktop-zone-turns-off/)
A zone that stops mid-cook, or a cooktop that shuts down after a long session at high power. On induction that is nearly always the appliance protecting itself, and it costs nothing to confirm.

- One zone stops during cooking
- Everything shuts down together
- A letter-F code on the display
In more detail

## About Thermador cooktop error code E9000

### What this one means

The voltage at the appliance is outside the range it will run on. It is a code the manufacturer publishes for this appliance, not one we have worked out — and it is decoded here rather than left as three characters on a display.

### The other ways your machine may say it

The same condition is published under more than one label, because it has been carried across generations of this appliance:

- **E9000, E9010, U400** — the same condition, on machines of different ages

### What the code covers

A published cause names a circuit rather than a component, which is the single most useful thing to know before ordering a part. This one covers:

- The circuit
- The building supply
- A loose connection at the terminal block

### Worth doing before you call

- Check whether other appliances on the same circuit behave oddly at the same moment

### Then what

Not an error in the appliance. A cooktop wired for 240V and fed 208V from a building’s three-phase supply gives exactly this.

This code is published for cooktops & rangetops and professional ranges. The [full list of codes](https://thermadormiami.support/error-codes/) has the rest of them, searchable, including the labels older and newer machines use for the same conditions.

This article is based on:

- Official manufacturer documentation
- Internal repair procedures
- Technician repair history
- Company quality standards

## Tell us the model number and what it is doing.

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**[Read full article: Thermador cooktop error code E9000](https://thermadormiami.support/error-codes/error-code-e9000-cooktop/)**