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Thermador
Gas Cooktop

Model # CGX456U Official Thermador gas cooktop

Here are the diagrams and repair parts for Official Thermador CGX456U gas cooktop, as well as links to manuals and error code tables, if available.

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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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Error Codes

Model diagram and schematic

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ALL PARTS
Showing 10 of 36 parts  |
O-ring 20-02-018-02
#11

Maintop diagram

O-ring

Part #20-02-018-02

This item is not returnable
$4.52
In Stock
Screw 14-91-118
Screw

Part #14-91-118

$77.99
In Stock
Mntg Kit 20-02-147
#22

Rough-in box diagram

Mntg kit

Part #20-02-147

Replaced by #00188954

?
Manufacturer substitution
This part replaces 20-02-147. Substitute parts can look different from the original.
$35.49 | 
14% OFF Phone Price : $41.49
In Stock
Controller 20-01-879-03
#17

Rough-in box diagram

Controller

Part #20-01-879-03

The manufacturer no longer makes this part, and there's no substitute part

Manifold 20-04-239
#6

Controls and tubing diagram

Manifold

Part #20-04-239

The manufacturer no longer makes this part, and there's no substitute part

Valve 20-02-531-01
#10

Controls and tubing diagram

Valve

Part #20-02-531-01

The manufacturer no longer makes this part, and there's no substitute part

Clamp, Ring 20-04-294
#3

Rough-in box diagram

Clamp, ring

Part #20-04-294

The manufacturer no longer makes this part, and there's no substitute part

Regular 5" W.c. 20-02-108
#21

Rough-in box diagram

Regular 5" w.c.

Part #20-02-108

The manufacturer no longer makes this part, and there's no substitute part

Cleaner 14-39-903

#NI

All parts diagram

Cleaner

Part #14-39-903

The manufacturer no longer makes this part, and there's no substitute part

Meter 20-01-872-02
#5

Controls and tubing diagram

Meter

Part #20-01-872-02

The manufacturer no longer makes this part, and there's no substitute part

Most common symptoms to help you fix your cooktops

Choose a symptom to see related cooktop repairs.

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Why isn't my cooktop working at all?

Main causes: lack of electrical power, gas supply failure, bad pressure regulator, control system failure…

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Repair guides for gas cooktops

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How to replace a spark module on a gas cooktop

How to replace a spark module on a gas cooktop

No flame on your gas cooktop? Installing a new spark module could be the fix you need.…

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Repair difficulty
Time required
 30 minutes or less
How to replace a spark igniter switch on a gas cooktop

How to replace a spark igniter switch on a gas cooktop

Follow these step-by-step instructions to fix the surface burner ignition system on your gas cooktop by replacing the sp…

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Repair difficulty
Time required
 45 minutes or less

Effective articles & videos to help repair your cooktops

Use the advice and tips in these articles and videos to get the most out of your cooktop.

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5 Holiday Cleaning Tasks Essential to Boosting Your Home’s Image

5 Holiday Cleaning Tasks Essential to Boosting Your Home’s Image

Get tips on completing essential holiday cleaning tasks to brighten your home.…

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How to repair broken or damaged wires video

How to repair broken or damaged wires video

Learn how to repair broken, frayed or damaged wires in your appliances.…

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Cooktop common questions

Cooktop common questions

These common questions can help you make the most of your cooktop.…

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