Rheem
Furnace

Model # GUF Official Rheem furnace

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

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Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 78 parts  |

Capacitor 43-20847-10
#13A

Replacement parts diagram

Capacitor

Part #43-20847-10

Replaced by #12907

?
Manufacturer substitution
This part replaces 43-20847-10. Substitute parts can look different from the original.
This item is not returnable
$4.87
17% OFF Phone Price : $5.87
In Stock
Relay-plug 42-19423-01
#15

Replacement parts diagram

Relay-plug

Part #42-19423-01

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

Ign Control 62-21192-06
#16

Replacement parts diagram

Ign control

Part #62-21192-06

Replaced by #BG1600M51EF-1AA

?
Manufacturer substitution
This part replaces 62-21192-06. Substitute parts can look different from the original.
$191.94
6% OFF Phone Price : $203.94
In Stock
Ign Control 62-21192-07
#16A

Replacement parts diagram

Ign control

Part #62-21192-07

Replaced by #BG1600M51EF-1AA

?
Manufacturer substitution
This part replaces 62-21192-07. Substitute parts can look different from the original.
$191.94
6% OFF Phone Price : $203.94
In Stock
Orifice 62-22175-54

#NI

All parts diagram

Orifice

Part #62-22175-54

In Stock
Pilot Burner 62-21609-01
#22A

Replacement parts diagram

Pilot burner

Part #62-21609-01

In Stock
Weatherking Blow Cutoff AE-64401-05

#NI

All parts diagram

Weatherking blow cutoff

Part #AE-64401-05

In Stock
Weatherking Blow Cutoff AE-64401-07

#NI

All parts diagram

Weatherking blow cutoff

Part #AE-64401-07

In Stock
Orifice 62-22175-42

#NI

All parts diagram

Orifice

Part #62-22175-42

In Stock
Orifice 62-22175-45

#NI

All parts diagram

Orifice

Part #62-22175-45

In Stock

Symptoms for gas pressure washers

Choose a symptom to see related pressure washer repairs.

Main causes: using a high-pressure spray tip when applying detergent, clogged siphon tube, chemical injection system fai…

Main causes: overfilling engine with oil, improper fuel/air mixture, choke system problems, dirty carburetor, engine nee…

Main causes: broken recoil spring, damaged recoil starter…

Main causes: dirty air filter, stale fuel, clogged or dirty carburetor, bad unloader valve…

Main causes: insufficient water supply, clogged water inlet screen, clogged pressure hose, faulty pump check valves, stu…

Main causes: damaged recoil starter, oil inside cylinder, locked up engine piston…

Main causes: faulty unloader valve, bad pressure regulator…

Main causes: stale fuel, gummed up carburetor, engine needs tune up, throttle and choke controls need adjustment, bad re…

Main causes: pump running for more than 5 minutes when the spray wand isn't being used, faulty pressure relief valve, ba…

Repair guides for gas pressure washers

These step-by-step repair guides will help you safely fix what’s broken on your pressure washer.

How to install a pressure washer check valve kit

How to install a pressure washer check valve kit

Air in the inlet water supply can damage the check valves. If the pump won’t build up pressure due to damaged check valv…

Repair difficulty
Time required
 120 minutes or less
How to install a pressure washer O-ring kit

How to install a pressure washer O-ring kit

O-rings seal fittings on the pressure washer pump. Damaged seals allow water to leak from the pump. Follow these steps t…

Repair difficulty
Time required
 45 minutes or less
How to install a pressure washer chemical injection kit

How to install a pressure washer chemical injection kit

The chemical injection valve draws detergent into the pump. If it’s not drawing detergent, use a repair kit to replace t…

Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your furnaces

Use the advice and tips in these articles and videos to get the most out of your pressure washer.

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.…

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.…

Top questions about Sears and Sears PartsDirect

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…