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Williams
Wall Heater

Model # 435 FX-R NAT Official Williams wall furnace

Here are the diagrams and repair parts for Official Williams 435-FX-R-NAT wall furnace, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 66 parts  |
Drft Hd Gskt P107900

#15

All parts diagram

Drft hd gskt

Part #P107900

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

Drft Hd Assy 12B12

#8

All parts diagram

Drft hd assy

Part #12B12

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

Furnace Burner Flame Sensor P271100

#41A

All parts diagram

Furnace burner flame sensor

Part #P271100

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

Vent Cover 7B12

#7

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Vent cover

Part #7B12

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

Base Gasket P026500

#14

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Base gasket

Part #P026500

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

Furnace Pilot Burner P179900

#40D

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Furnace pilot burner

Part #P179900

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

Furnace Motor Isolator P022800

#20

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Furnace motor isolator

Part #P022800

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

Center Front Panel 12C21

#10

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Center front panel

Part #12C21

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

Junciton Box 12B05

#13

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Junciton box

Part #12B05

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

Switch Box 11B05

#9

All parts diagram

Switch box

Part #11B05

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

Symptoms for gas ranges

Why isn't my range's gas burner heating properly?

Main causes: gas supply problem, faulty pressure regulator, clogs in burner or orifice, control system failure, faulty t…

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Why won't my range's gas burner spark or ignite?

Main causes: burner igniter switch failure, bad spark module, dirty or damaged spark electrode, wiring failure…

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Repair guides for gas ranges

How to replace oven door hinges on a gas range

How to replace oven door hinges on a gas range

See how to replace the oven door hinges on a gas range yourself, in just 30 minutes.…

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Repair difficulty
Time required
 15 minutes or less
How to replace a range spark igniter switch

How to replace a range spark igniter switch

Follow these steps to replace the spark igniter switch—sometimes called a burner switch or spark switch—on a gas or dual…

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Repair difficulty
Time required
 60 minutes or less
How to replace a gas range oven control board

How to replace a gas range oven control board

These step-by-step instructions explain how to replace an oven control board on a gas range…

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Repair difficulty
Time required
 15 minutes or less

Articles and videos for gas ranges

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

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How to enjoy all the online benefits we offer on our Sears PartsDirect website

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