Model # N9MSB0802120A1 Official ICP gas furnace

Here are the diagrams and repair parts for Official ICP N9MSB0802120A1 gas 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.

Installation guide

Owner’s manual

Model diagram and schematic

SEARCH WITHIN THIS MODEL

ALL PARTS

Showing 10 of 59 parts |

#12

Burner diagram

Furnace burner igniter

Part #1176919

$62.36

In Stock

Qty

Main assy diagram

Furnace electronic control board

Part #1184594

$187.97 |

6% OFF Phone Price : $199.97

In Stock

Qty

Main assy diagram

Transformer

Part #1177217

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

Burner diagram

Support burner asy

Part #1184315

$55.27

In Stock

Qty

#23

Main assy diagram

Trap assembly

Part #1184288

$34.30 |

15% OFF Phone Price : $40.30

In Stock

Qty

#17

Heat exchange diagram

Switch assembly

Part #1184879

$25.16

In Stock

Qty

Main assy diagram

Assembly shelf

Part #1184826

$146.48

In Stock

Qty

Main assy diagram

Cutoff blo

Part #1183500

$52.09

In Stock

Qty

Main assy diagram

Switch bracket

Part #1184289

$14.77

In Stock

Qty

#BB

Heat exchange diagram

Gasket fro

Part #1184310

This item is not returnable

$5.51

In Stock

Qty

Symptoms for top-mount refrigerators

Why is there water in the bottom of the fridge under vegetable drawers?

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

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 compressor run capacitor in a top-freezer refrigerator

The run capacitor sends electric current to the compressor motor to help the motor run efficiently. Replace the run capa…

Repair difficulty

Time required

15 minutes or less

How to replace the defrost thermistor in a top-freezer refrigerator

The defrost thermistor attaches to the evaporator coil and measures the evaporator coil temperature during defrost.…

Repair difficulty

Time required

15 minutes or less

Effective articles & videos to help repair your furnaces

View all

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

Learn about Sears Technical Institute and the advanced technical content being developed for aspiring appliance techs.…

Top questions about Sears and Sears PartsDirect

Model # N9MSB0802120A1 Official ICP gas furnace

Model diagram and schematic

SEARCH WITHIN THIS MODEL

Symptoms for top-mount refrigerators

Why is there water in the bottom of the fridge under vegetable drawers?

Repair guides for top-mount refrigerators

How to replace a refrigerator water valve

How to replace the compressor run capacitor in a top-freezer refrigerator

How to replace the defrost thermistor in a top-freezer refrigerator

Effective articles & videos to help repair your furnaces

How to get your furnace ready for winter

Introducing new technical repair content that we’re developing for the Sears Technical Institute

Top questions about Sears and Sears PartsDirect

Parts & More

Stay Connected

Quick links

Let us help you

More resources