Furnace

Model # OC100-B3 Official Amana oil-fired counterflow furnace

Here are the diagrams and repair parts for Official Amana OC100-B3 oil-fired counterflow furnace, as well as links to manuals and error code tables, if available.

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Browse Parts for
OC100-B3 Oil-Fired Counterflow Furnace
Control  - Fan & Limit M-h L4064a1321 21-0389
#56B

Replacement parts diagram

Control - fan & limit m-h l4064a1321

Part #21-0389

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

Furnace Blower Wheel 20-5034
#41

Replacement parts diagram

Furnace blower wheel

Part #20-5034

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

Oil Burner - Wayne 2/s - Plus Cell; Note 1 - For Complet 25-2303
#26H

Replacement parts diagram

Oil burner - wayne 2/s - plus cell; note 1 - for complet

Part #25-2303

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

Oil Burner - Wayne 2/s - Plus Cell; Note 1 - For Complet 25-2305
#26I

Replacement parts diagram

Oil burner - wayne 2/s - plus cell; note 1 - for complet

Part #25-2305

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

Furnace Blower Wheel 20-5045
#41C

Replacement parts diagram

Furnace blower wheel

Part #20-5045

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

Blower Bearing (2 Req'd) 3/4" Lau 7114 20-5030

#NI

All parts diagram

Blower bearing (2 req'd) 3/4" lau 7114

Part #20-5030

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

Control - Fan & Limit - Cemco Ctc-ifo-iafcw L0464b1592 21-0513
Control - fan & limit - cemco ctc-ifo-iafcw l0464b1592

Part #21-0513

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

Blower Assembly (complete W/ Motor) 10-10 980-0255

#NI

All parts diagram

Blower assembly (complete w/ motor) 10-10

Part #980-0255

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

Panel - Upper Limit Control 305-5260
#7B

Replacement parts diagram

Panel - upper limit control

Part #305-5260

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

Panel - Top Assembly 305-1100
#10B

Replacement parts diagram

Panel - top assembly

Part #305-1100

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

Symptoms for gas pressure washers

Choose a symptom to see related pressure washer repairs.

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

Main causes: broken recoil spring, damaged recoil starter…

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

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

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

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

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

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 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
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 replace a pressure washer pump

How to replace a pressure washer pump

The pump can be damaged by air in the inlet water supply or by chemicals that remain in the pump body after using the ch…

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.…

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Top questions about Sears and Sears PartsDirect

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