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Williams
Wall Heater

Model # 550DVI NAT Official Williams wall furnace

Here are the diagrams and repair parts for Official Williams 550DVI-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 71 parts  |
Trim Cover 11A40

#8

All parts diagram

Trim cover

Part #11A40

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

Owner's Manual P321004

#NI

All parts diagram

Owner's manual

Part #P321004

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

Select Switch P200400

#14

All parts diagram

Select switch

Part #P200400

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

Furnace Motor Isolator P022800

#20

All parts diagram

Furnace motor isolator

Part #P022800

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

Gasket P151900

#27

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Gasket

Part #P151900

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

Furnace Fan Blade P200600

#21

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Furnace fan blade

Part #P200600

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

Wire Bridle 31B036

#NI

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Wire bridle

Part #31B036

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

Furnace Burner Flame Sensor P271100

#45A

All parts diagram

Furnace burner flame sensor

Part #P271100

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

Tubing Assembly 11C37

#3

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Tubing assembly

Part #11C37

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

Baffle Hndl 11C63

#6

All parts diagram

Baffle hndl

Part #11C63

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…

Read more
Repair difficulty
Time required
 15 minutes or less

Articles and videos for gas ranges

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

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