Thermador
Gas Cooktop

Model #SGN30S Official Thermador gas cooktop

Here are the diagrams and repair parts for Thermador SGN30S gas cooktop, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

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

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Error Codes

Showing 10 of 223 parts

Cooktop Burner Igniter (replaces 00189719, 00189773, 00189889, 00413966, 00488832, 189324, 189773)#16

Knobs and burner parts assembly Diagram

Ignition

Part #35-00-436
Replaced by #00189324
?
Manufacturer substitution
This part replaces 35-00-436. Substitute parts can look different from the original.
Back Order
$35.49 | 
12% OFF 
Phone Price: $40.49
Range Nut, 1-mm, 22-TPI

See All Related Diagrams

Nut

Part #14-93-167
Replaced by #00188978
?
Manufacturer substitution
This part replaces 14-93-167. Substitute parts can look different from the original.
Back Order
$20.59 | 
20% OFF 
Phone Price: $25.59
Range Surface Burner Tube

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Venturi

Part #20-02-039
Replaced by #00189023
?
Manufacturer substitution
This part replaces 20-02-039. Substitute parts can look different from the original.
In Stock
$35.49 | 
12% OFF 
Phone Price: $40.49
Range Surface Burner Igniter Switch (replaces 00189885, 00413944, 00415094, 00421651, 428049)#7

Gas control valve detail (all models) Diagram

Switch

Part #20-02-137
Replaced by #00428049
?
Manufacturer substitution
This part replaces 20-02-137. Substitute parts can look different from the original.
In Stock
$16.49 | 
11% OFF 
Phone Price: $18.49
O-Ring#10

Knobs and burner parts assembly Diagram

O-ring

Part #20-02-018-02
This item is not returnable
In Stock
$4.52
U&c-guide

#NI

All parts Diagram

U&c-guide

Part #20-02-373
In Stock
$19.49
Complete Burner#5

Gas control valve detail (all models) Diagram

Complete burner

Part #20-02-114
This item is not returnable
In Stock
$4.99
Clip#9

Cook "n" vent controls/griddle (sgncv36g/sgn36g) (sgn36gb) (sgn36gs) (sgn36gw) (sgncv36gb) (sgncv36gs) (sgncv36gw) Diagram

Clip

Part #14-19-717
This item is not returnable
In Stock
$2.16
Screw

See All Related Diagrams

Screw

Part #14-91-118
In Stock
$77.99
Instl-manl

#NI

All parts Diagram

Instl-manl

Part #20-02-275
In Stock
$9.99

Symptoms common to all cooktops

Choose a symptom to see related cooktop repairs.

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

Repair guides for gas cooktops

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 spark igniter switches.

Repair difficulty
Time required
 45 minutes or less
November 20, 2014
By Lyle Weischwill
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.

Repair difficulty
Time required
 30 minutes or less

Articles and videos common to all cooktops

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

November 12, 2022

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

By Lyle Weischwill

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

August 19, 2022

Are DIY appliance repairs safe?

By Lyle Weischwill

Find out how to stay safe when repairing your appliances.

August 17, 2021

How to read a wiring schematic video

By Lyle Weischwill

Learn how to decipher symbols so you can buy the right part for your problem.