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ICP
Furnace

Model # GNJ125M20C1 Official ICP gas furnace

Here are the diagrams and repair parts for Official ICP GNJ125M20C1 gas 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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Showing 10 of 57 parts  |
Trans 40 Va 1008782
#7

Unit parts diagram

Trans 40 va

Part #1008782

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

Furnace Pilot Igniter And Sensor (replaces B14010-11s, Q3400a1040) 1009524
#28

Unit parts diagram

Furnace pilot igniter and sensor (replaces b14010-11s, q3400a1040)

Part #1009524

$166.19 | 
7% OFF Phone Price : $178.19
In Stock
Cont Fan Tmr 1009838
#6

Unit parts diagram

Cont fan tmr

Part #1009838

Replaced by #1170063

?
Manufacturer substitution
This part replaces 1009838. Substitute parts can look different from the original.
$220.46 | 
5% OFF Phone Price : $232.46
In Stock
Furnace Burner 1008726
#10

Unit parts diagram

Furnace burner

Part #1008726

$142.32
In Stock
Limit Switch 1000735
#3

Unit parts diagram

Limit switch

Part #1000735

Replaced by #1013105

?
Manufacturer substitution
This part replaces 1000735. Substitute parts can look different from the original.
This item is not returnable
$15.14
In Stock
Arcoaire Door Blowe 1010192
#J

Unit parts diagram

Arcoaire door blowe

Part #1010192

$183.94
In Stock
Rail Galv Bl 57059
#BB

Unit parts diagram

Rail galv bl

Part #57059

$952.55
In Stock
Conv Kit 1160991

#NI

All parts diagram

Conv kit

Part #1160991

$87.04
In Stock
Baffle 707010031
#DD

Unit parts diagram

Baffle

Part #707010031

$49.47
In Stock
Furnace Pilot Burner 1149856
#11

Unit parts diagram

Furnace pilot burner

Part #1149856

$314.91 | 
$12.00 OFF Phone Price : $326.91
In Stock

Symptoms for gas ranges

Why won't my range's gas burner spark or ignite?

Main causes: burner igniter switch failure, bad spark module, dirty or damaged spark electrode, wiring failure…

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Why isn't my range's gas burner heating properly?

Main causes: gas supply problem, faulty pressure regulator, clogs in burner or orifice, control system failure, faulty t…

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Repair guides for gas ranges

How to replace oven door hinges on a gas range

How to replace oven door hinges on a gas range

See how to replace the oven door hinges on a gas range yourself, in just 30 minutes.…

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Repair difficulty
Time required
 15 minutes or less
How to replace a range spark igniter switch

How to replace a range spark igniter switch

Follow these steps to replace the spark igniter switch—sometimes called a burner switch or spark switch—on a gas or dual…

Read more
Repair difficulty
Time required
 60 minutes or less
How to replace a range spark igniter electrode

How to replace a range spark igniter electrode

Learn how to replace the spark igniter electrode for the surface burners on a gas range or dual-fuel range.…

Read more
Repair difficulty
Time required
 45 minutes or less

Effective articles & videos to help repair your furnaces

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How to get your furnace ready for winter

Get expert tips for preparing your furnace for winter. Follow maintenance tips to keep your furnace in top shape.…

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Introducing new technical repair content that we’re developing for the Sears Technical Institute

Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.…

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