Amana
Furnace

Model # SU-125A4 Official Amana gas-fired upflow furnace

Here are the diagrams and repair parts for Official Amana SU-125A4 gas-fired upflow furnace, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

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

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 197 parts  |

Pressure Regulator (v5107) 75,000-125,000 Input - Nat. G 21-0595
Pressure regulator (v5107) 75,000-125,000 input - nat. g

Part #21-0595

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

Flue Restrictor Plate 975-1096
#39E

(su-75) (su-100) (su-125) (su-150) (su-175) (su-200) diagram

Flue restrictor plate

Part #975-1096

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

Mainfold Assembly (less Controls) 985-1153
#41A

(su-75) (su-100) (su-125) (su-150) (su-175) (su-200) diagram

Mainfold assembly (less controls)

Part #985-1153

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

Blower Base Seal Strip And Baffle 251-6029
#46B

(su-75) (su-100) (su-125) (su-150) (su-175) (su-200) diagram

Blower base seal strip and baffle

Part #251-6029

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

Blower Assembly (w/motor) 980-0236
#1F

(su-125ah) (su-125a3) (su-125a4) (su-125bh) (su-125b3) (su-125b4) (su-150ah) (su-150a3) (su-150a4) (su-150bh) (su-150b4) (su-150b5) (su-175bh) (su-175b4) (su-175b5) (su-200bh) (su-200b5) (su-200b6) diagram

Blower assembly (w/motor)

Part #980-0236

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

Rear Panel Assembly 252-7000
#33C

(su-75) (su-100) (su-125) (su-150) (su-175) (su-200) diagram

Rear panel assembly

Part #252-7000

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

Pilot Burner W/orifice (m.h. Q308b1187) 21-0039
Pilot burner w/orifice (m.h. q308b1187)

Part #21-0039

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

Plastic Washers (2 Req.) 20-5957
#10

(su-125ah) (su-125a3) (su-125a4) (su-125bh) (su-125b3) (su-125b4) (su-150ah) (su-150a3) (su-150a4) (su-150bh) (su-150b4) (su-150b5) (su-175bh) (su-175b4) (su-175b5) (su-200bh) (su-200b5) (su-200b6) diagram

Plastic washers (2 req.)

Part #20-5957

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

Blower Assembly (w/motor) 980-0272
#1C

(su-125ah) (su-125a3) (su-125a4) (su-125bh) (su-125b3) (su-125b4) (su-150ah) (su-150a3) (su-150a4) (su-150bh) (su-150b4) (su-150b5) (su-175bh) (su-175b4) (su-175b5) (su-200bh) (su-200b5) (su-200b6) diagram

Blower assembly (w/motor)

Part #980-0272

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

Pilot Line Filter (ab388150) 21-1004
Pilot line filter (ab388150)

Part #21-1004

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

Symptoms for top-mount refrigerators

Main causes: frozen or clogged defrost drain tube, cracked water system tubing…

Repair guides for top-mount refrigerators

How to replace a refrigerator water valve

How to replace a refrigerator water valve

Replace the water valve that feeds water to the ice maker and water dispenser if it no longer controls the flow of water…

Repair difficulty
Time required
 15 minutes or less
How to replace the evaporator fan motor in a top-freezer refrigerator

How to replace the evaporator fan motor in a top-freezer refrigerator

The evaporator fan motor blows air across the evaporator coils and through the refrigerator cabinet for cooling. Replace…

Repair difficulty
Time required
 15 minutes or less
How to replace the compressor start relay in a top-freezer refrigerator

How to replace the compressor start relay in a top-freezer refrigerator

The compressor start relay starts the compressor and shuts it off if the motor overheats. Replace the start relay if it'…

Repair difficulty
Time required
 15 minutes or less

Effective articles & videos to help repair your furnaces

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.…