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Thermal Zone GD120K20B gas furnace Parts
Here are the diagrams and repair parts for Thermal Zone GD120K20B gas furnace, as well as links to manuals and error code tables, if available.
By Schematic
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Browse Parts for GD120K20B Gas Furnace
80+ downflow furnace diagram
Access Door (not Shown)
Part #903116Z
The manufacturer no longer makes this part, and there's no substitute part
80+ downflow furnace diagram
Hose, High - Temp Silicone (not Shown)
Part #257843
The manufacturer no longer makes this part, and there's no substitute part
80+ downflow furnace diagram
Furnace Blower Fan Motor, 3/4-hp
Part #902346
The manufacturer no longer makes this part, and there's no substitute part
80+ downflow furnace diagram
Turbular (not Shown)
Part #487750
The manufacturer no longer makes this part, and there's no substitute part
80+ downflow furnace diagram
Auxillary Limit 140/20 (not Shown)
Part #626439
The manufacturer no longer makes this part, and there's no substitute part
80+ downflow furnace diagram
Gas Manifold Tube Assembly ( 5 Tube) (pg060k120-3)
Part #663552
The manufacturer no longer makes this part, and there's no substitute part
80+ downflow furnace diagram
Switch
Part #626350
The manufacturer no longer makes this part, and there's no substitute part
80+ downflow furnace diagram
Wheel Blower Ccw (not Shown)
Part #667260
The manufacturer no longer makes this part, and there's no substitute part
80+ downflow furnace diagram
Igniter
Part #903110
The manufacturer no longer makes this part, and there's no substitute part
80+ downflow furnace diagram
Main Burner Ofrifice (43 Drill) (not Shown)
Part #661043
The manufacturer no longer makes this part, and there's no substitute part
Symptoms for gas cooktops
Main causes: burner igniter switch failure, bad spark module, dirty or damaged spark electrode, wiring failure, lack of …
Main causes: stuck burner igniter switch, wet igniter switch contacts, faulty spark module…
Main causes: gas supply problem, faulty pressure regulator, clogs in burner or orifice, burner valve failure…
Repair guides for gas cooktops
How to replace a spark module on a gas cooktop
No flame on your gas cooktop? Installing a new spark module could be the fix you need.…
Repair time and Difficulty
30 minutes or less
How to replace a spark igniter switch on a gas cooktop
Follow these step-by-step instructions to fix the surface burner ignition system on your gas cooktop by replacing the sp…
Repair time and Difficulty
45 minutes or less
Effective articles & videos to help repair your furnaces
Get expert tips for preparing your furnace for winter. Follow maintenance tips to keep your furnace in top shape.…
Find out how new DOE standards going into effect in 2023 can affect you and what you need to do.…
Get answers to frequently asked questions about Sears and Sears PartsDirect.…
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