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Nordyne
Furnace

Model # M1GC077 Official Nordyne furnace

Here are the diagrams and repair parts for Official Nordyne M1GC077 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 67 parts  |
Door 903407
#1

Furnace diagram

Door

Part #903407

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

Furnace Inducer Vent Motor Assembly 903404
#16

Furnace diagram

Furnace inducer vent motor assembly

Part #903404

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

Blower Wheel 667037
#39

Furnace diagram

Blower wheel

Part #667037

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

Door Striker 668905
#5

Furnace diagram

Door striker

Part #668905

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

Transformer 621807
#13

Furnace diagram

Transformer

Part #621807

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

Door Latch 668420
#6

Furnace diagram

Door latch

Part #668420

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

Furnace Blower Motor 903433
#38A

Furnace diagram

Furnace blower motor

Part #903433

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

Furnace Air Filter 669064
#7

Furnace diagram

Furnace air filter

Part #669064

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

Conversion Kit 903428
#NI

Furnace diagram

Conversion kit

Part #903428

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

Switch 632337
#11

Furnace diagram

Switch

Part #632337

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

Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

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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…

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

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

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Why is my treadmill's walking belt off center?

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

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Why is my treadmill's walking belt slipping?

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

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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…

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Why does my treadmill have no display?

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

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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…

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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

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…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a treadmill walking belt

How to replace a treadmill walking belt

A worn walking belt will begin to slow down during use. If your treadmill walking belt is worn out, replace it using the…

Read more
Repair difficulty
Time required
 45 minutes or less
How to replace a treadmill drive motor

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'…

Read more
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 treadmill.

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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.…

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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

Top questions about Sears and Sears PartsDirect

Get answers to frequently asked questions about Sears and Sears PartsDirect.…

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