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Janitrol GUN100-4B gas furnace Parts
Here are the diagrams and repair parts for Janitrol GUN100-4B gas furnace, as well as links to manuals and error code tables, if available.
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Browse Parts for GUN100-4B Gas Furnace
Heat exchanger assembly diagram
Secondary He
Part #B18646-01
The manufacturer no longer makes this part, and there's no substitute part
Heat exchanger assembly diagram
Furnace Burner Roll-out Limit Switch
Part #B13701-08
The manufacturer no longer makes this part, and there's no substitute part
Gas train diagram
Manifold, 4
Part #B18264-18
The manufacturer no longer makes this part, and there's no substitute part
Heat exchanger assembly diagram
Flue Restrictor (gun100-4b, Gus100-4)
Part #18248-11S
The manufacturer no longer makes this part, and there's no substitute part
Gas train diagram
Ignition Mod
Part #B13707-24
The manufacturer no longer makes this part, and there's no substitute part
Heat exchanger assembly diagram
Limit, 240f,
Part #B13700-03
The manufacturer no longer makes this part, and there's no substitute part
Blower assembly diagram
Motor
Part #B13400-14
The manufacturer no longer makes this part, and there's no substitute part
Heat exchanger assembly diagram
Manifold Bra
Part #18159-02
The manufacturer no longer makes this part, and there's no substitute part
Casing diagram
Control Acce
Part #18813-12P
The manufacturer no longer makes this part, and there's no substitute part
Misc. electrical/hardware diagram
Rubber Sleev
Part #B18104-01
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.…
Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.…
Get answers to frequently asked questions about Sears and Sears PartsDirect.…
Parts & More
Parts
Exchngr Heat 50HQ400174Base Assembly 4-00Cover Condenser WE01X10344Harness 57-9930Screw 878512Home Electronics Power Transfer RTT1149Power Cover 3126264000Check Valve 67220214179325 179325Home Electronics Integrated Circuit 2364842Fitting 253-69916-A3Bearing Co 05406900Washer EBZ37215113HANDLE DOO DE64-01437CBolt 95701-10018-08Door Frame GWAKPB137WRRZHolder 00154152Motor HC39VA120Sleeve KA56CS084Spacer-verna 140-0808