Can’t find your part?   Contact us:
+1-309-603-4777
Sears Parts Direct
Please enter one or more characters
Scan Icon
Tips to find your model number
Water filter finder tool
Top DIY repair help
View All Repair Categories

Appliances

Lawn & Garden

Power Tools

Home Improvement

Sports & Leisure

Heating & Cooling

View all parts by brand
Orders

  • Keep track of the models you own in your profile

    Sign in or Register to view or add models

Schedule a repair
Wall Heater

Model # 3003621 Official Williams furnace

Here are the diagrams and repair parts for Official Williams 3003621 furnace, as well as links to manuals and error code tables, if available.

By Schematic
SELECT DIAGRAM
?

This is the number corresponding to the part on the diagram / schematic

Browse Parts for
3003621 Furnace
Iron Burner P147400
#1

Wall furnace diagram

Iron burner

Part #P147400

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

Furnace Burner Igniter P322400
#7

Wall furnace diagram

Furnace burner igniter

Part #P322400

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

Furnace Wall-mounted Thermostat P322016
#9

Wall furnace diagram

Furnace wall-mounted thermostat

Part #P322016

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

Control-dr 8A103
#2

Wall furnace diagram

Control-dr

Part #8A103

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

Orifice P090553
#5

Wall furnace diagram

Orifice

Part #P090553

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

Furnace Gas Valve P295201A
#3

Wall furnace diagram

Furnace gas valve

Part #P295201A

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

Hole Assy 12B40
#10

Wall furnace diagram

Hole assy

Part #12B40

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

Pilot Lite P323416
#8

Wall furnace diagram

Pilot lite

Part #P323416

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

Igniter P285500
#6

Wall furnace diagram

Igniter

Part #P285500

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

Manifold P147300
#4

Wall furnace diagram

Manifold

Part #P147300

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

Parts & More