Williams
Wall Heater

Model # 400DVI NAT Official Williams wall furnace

Here are the diagrams and repair parts for Official Williams 400DVI-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  |

Extension Assembly 11A97

#28

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Extension assembly

Part #11A97

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

Furnace Burner Pan Gasket, 44-in P101600

#46

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Furnace burner pan gasket, 44-in

Part #P101600

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

Fan Shroud 11B86

#6

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Fan shroud

Part #11B86

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

Furnace Fan Blade P200600

#19

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Furnace fan blade

Part #P200600

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

Burn Spacer P018100

#47

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Burn spacer

Part #P018100

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

Switch Box 11B05

#20

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Switch box

Part #11B05

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

Trim Cover 11A40

#7

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Trim cover

Part #11A40

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

Casing Assembly 11C42-2

#1

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Casing assembly

Part #11C42-2

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

Furnace Motor Isolator P022800

#18

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Furnace motor isolator

Part #P022800

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

Extension Assembly 11B49

#29

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Extension assembly

Part #11B49

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

Repair guides for bottom-mount refrigerators

How to replace a door gasket in a French-door refrigerator

How to replace a door gasket in a French-door refrigerator

The door gasket, often called a door seal, seals the gap around the door to keep the cold air in and the warm air out. R…

Repair difficulty
Time required
 15 minutes or less
How to replace a refrigerator water valve

How to replace a refrigerator water valve

Replace the water valve that feeds water to the ice maker and water dispenser if it no longer controls the flow of water…

Repair difficulty
Time required
 15 minutes or less
How to replace a refrigerator defrost control assembly

How to replace a refrigerator defrost control assembly

Follow these steps to replace the defrost control assembly if your Kenmore or LG French door refrigerator displays an er…

Repair difficulty
Time required
 120 minutes or less

Articles and videos for bottom-mount refrigerators

How to Replace the Water Filter in a GE Refrigerator

How to Replace the Water Filter in a GE Refrigerator

See how to install the water filter on your GE refrigerator, no matter the filter type or refrigerator style.…

How to Replace the Water Filter in a Maytag Refrigerator

How to Replace the Water Filter in a Maytag Refrigerator

No matter what style Maytag refrigerator you have, we can walk you through replacing the water filter.…

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

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

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…