Model # 50GV-3T NAT Official Williams wall furnace

Here are the diagrams and repair parts for Official Williams 50GV-3T-NAT wall furnace, 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”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

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

Model diagram and schematic

SEARCH WITHIN THIS MODEL

ALL PARTS

Showing 10 of 52 parts |

#16A

Replacement parts diagram

Thermocouple

Part #P042100

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

#20

Replacement parts diagram

Thermostat

Part #P251000

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

#16

Replacement parts diagram

Generator

Part #P043800

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

#12

Replacement parts diagram

Pilot

Part #P320758

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

#29

Replacement parts diagram

Furnace 2-speed fan switch

Part #P320911A

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

#25

Replacement parts diagram

Motor

Part #P320905

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

#30

Replacement parts diagram

Wire bridle

Part #P320912

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

#12A

Replacement parts diagram

Pilot

Part #P320778

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

Replacement parts diagram

Furnace pilot burner

Part #P179900

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

#26

Replacement parts diagram

Fan blade

Part #P320907

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

Symptoms for top-mount refrigerators

Why is there water in the bottom of the fridge under vegetable drawers?

Main causes: frozen or clogged defrost drain tube, cracked water system tubing…

How to replace the electronic control board inside a top-freezer refrigerator

The electronic control board is the "brains" of the refrigerator. Replace the electronic control board if it fails.…

Repair difficulty

Time required

15 minutes or less

How to replace a refrigerator temperature control thermostat

This helpful refrigerator repair guide explains how to replace the temperature control thermostat in a refrigerator.…

Repair difficulty

Time required

15 minutes or less

How to replace the condenser fan motor in a top-freezer refrigerator

The condenser fan is in the machine compartment of the refrigerator next to the compressor. It moves air across the cond…

Repair difficulty

Time required

15 minutes or less

Articles and videos for top-mount refrigerators

How to Replace the Water Filter in a GE Refrigerator

Model # 50GV-3T NAT Official Williams wall furnace

Model diagram and schematic

SEARCH WITHIN THIS MODEL

Symptoms for top-mount refrigerators

Why is there water in the bottom of the fridge under vegetable drawers?

Repair guides for top-mount refrigerators

How to replace the electronic control board inside a top-freezer refrigerator

How to replace a refrigerator temperature control thermostat

How to replace the condenser fan motor in a top-freezer refrigerator

Articles and videos for top-mount refrigerators

How to Replace the Water Filter in a GE Refrigerator

How to Replace the Water Filter in a Maytag Refrigerator

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

Parts & More

Stay Connected

Quick links

Let us help you

More resources