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Amana
Furnace

Model # SU-125B4 Official Amana gas-fired upflow furnace

Here are the diagrams and repair parts for Official Amana SU-125B4 gas-fired upflow 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 197 parts  |
Pilostat Power Unit (ab389418) 21-1003
Pilostat power unit (ab389418)

Part #21-1003

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

Furnace Blower Shaft 20-5021
#6

(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

Furnace blower shaft

Part #20-5021

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

Heat-cool Relay 22-9645
#24B

(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

Heat-cool relay

Part #22-9645

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

Adjustable Air Shutter 910-0201
#52A

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

Adjustable air shutter

Part #910-0201

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

Flue Restrictor Plate 975-1090
#39A

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

Flue restrictor plate

Part #975-1090

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

Blower Assembly (w/motor) 980-0271
#1B

(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 #980-0271

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

Draft Hood Assembly 975-0213
#50D

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

Draft hood assembly

Part #975-0213

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

Manifold Assembly (less Control And Orifice) 985-1192
#41E

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

Manifold assembly (less control and orifice)

Part #985-1192

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

Rear Panel Assembly 254-7000
#33E

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

Rear panel assembly

Part #254-7000

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

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