Model # GMT090-3B Official Goodman gas furnace

Here are the diagrams and repair parts for Official Goodman GMT090-3B gas furnace, as well as links to manuals and error code tables, if available.

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Installation guide

Model diagram and schematic

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ALL PARTS

Showing 10 of 154 parts |

Furnace Hot-surface Ignition Control Board (replaces 18099-13s, B18099-13s) B1809913S

#291

Misc. components/drain kit assembly diagram

Furnace hot-surface ignition control board (replaces 18099-13s, b18099-13s)

Part #B1809913S

This item is not returnable

$185.31 |

6% OFF Phone Price : $197.31

In Stock

Qty

#241

Blower assembly diagram

Wheel

Part #B1368047A

Replaced by #D6723306S

$119.58 |

9% OFF Phone Price : $131.58

In Stock

Qty

#141

Burner box assembly diagram

Flame sensor

Part #B1172606

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

#181

Burner box assembly diagram

Furnace burner

Part #B4022700

$21.16 |

22% OFF Phone Price : $27.16

In Stock

Qty

Furnace Temperature Limit Switch B1370198

#91

Heat exchanger assembly diagram

Furnace temperature limit switch

Part #B1370198

$27.29

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Qty

Furnace Secondary Heat Exchanger 4021309S

#61C

Heat exchanger assembly diagram

Furnace secondary heat exchanger

Part #4021309S

$192.79 |

6% OFF Phone Price : $204.79

In Stock

Qty

Furnace Auxiliary Limit Control (replaces B13701-11) B13701-55

#401

Blower assembly diagram

Furnace auxiliary limit control (replaces b13701-11)

Part #B13701-55

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

Furnace Gas Valve (replaces 0151m00013s) B1282628

#211

Burner box assembly diagram

Furnace gas valve (replaces 0151m00013s)

Part #B1282628

$114.39 |

9% OFF Phone Price : $126.39

In Stock

Qty

#201

Burner box assembly diagram

Orifice

Part #B4089343

Replaced by #0163F00018

This item is not returnable

$4.29

In Stock

Qty

#221A

Blower assembly diagram

Shell

Part #2539305

Replaced by #2539305S

$86.06 |

7% OFF Phone Price : $92.06

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Qty

Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

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Why does my treadmill's walking belt slow down?

Main causes: damaged walking belt, improper belt tension, lack of belt lubricant, bad drive motor…

Why is my treadmill's walking belt slipping?

Main causes: damaged walking belt, improper belt tension, bad roller bearing…

Why is my treadmill's walking belt off center?

Main causes: rear roller out of alignment, damaged walking belt, bad roller…

Why won't my treadmill start even though the console display works?

Main causes: missing safety key, bad control console, wiring failure, faulty motor control board, bad drive motor…

Why is my treadmill's heart rate sensor not accurate?

Main causes: faulty sensors, wiring failure, bad control console…

Why does my treadmill have no display?

Main causes: bad control console, wiring failure, bad motor control board…

Why won't my treadmill power up?

Main causes: no power, bad power cord, tripped or faulty overload switch, bad power switch, wiring failure, bad motor co…

Repair guides for treadmills

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

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How to replace a treadmill motor controller

Your treadmill motor won't run with a defective motor controller. Replace the motor controller if it doesn't operate the…

Repair difficulty

Time required

15 minutes or less

How to replace a treadmill drive motor

A defective drive motor won't run when activated by the motor controller. Replace the treadmill drive motor if it doesn'…

Repair difficulty

Time required

15 minutes or less

How to replace a treadmill walking board

A worn-out walking board creates friction with the walking belt and causes the belt to slow down during use. Replace the…

Repair difficulty

Time required

30 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 treadmill.

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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 # GMT090-3B Official Goodman gas furnace

Model diagram and schematic

SEARCH WITHIN THIS MODEL

Symptoms for treadmills

Why does my treadmill's walking belt slow down?

Why is my treadmill's walking belt slipping?

Why is my treadmill's walking belt off center?

Why won't my treadmill start even though the console display works?

Why is my treadmill's heart rate sensor not accurate?

Why does my treadmill have no display?

Why won't my treadmill power up?

Repair guides for treadmills

How to replace a treadmill motor controller

How to replace a treadmill drive motor

How to replace a treadmill walking board

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

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