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Rheem
Furnace

Model # GUJ Official Rheem horizontal furnace

Here are the diagrams and repair parts for Official Rheem GUJ horizontal 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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ALL PARTS
Showing 10 of 158 parts  |
Relay-plug 42-19423-01
#28

Replacement parts diagram

Relay-plug

Part #42-19423-01

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

Orifice 62-21609-05

#NI

All parts diagram

Orifice

Part #62-21609-05

$26.67
In Stock
Pilot Burner 62-21609-01
Pilot burner

Part #62-21609-01

$106.76
In Stock
Furnace Blower Fan Wheel 70-20602-01
#35DE

Replacement parts diagram

Furnace blower fan wheel

Part #70-20602-01

$108.77 | 
10% OFF Phone Price : $120.77
In Stock
Weatherking Blow Cutoff AE-64401-07
#33A

Replacement parts diagram

Weatherking blow cutoff

Part #AE-64401-07

$21.71
In Stock
Burner Assembly 75-22476-15
#23D

Replacement parts diagram

Burner assembly

Part #75-22476-15

$325.45
In Stock
Switch 42-21554-88

#NI

All parts diagram

Switch

Part #42-21554-88

$97.51
In Stock
Weatherking Blow Cutoff AE-64401-05
#33C

Replacement parts diagram

Weatherking blow cutoff

Part #AE-64401-05

$29.67
In Stock
Blow Cutoff AE-64401-06
#33B

Replacement parts diagram

Blow cutoff

Part #AE-64401-06

$24.11
In Stock
Burner Assembly 75-22476-14
#23C

Replacement parts diagram

Burner assembly

Part #75-22476-14

$214.58
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…

Read more

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…

Read more

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.…

Read more
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

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

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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