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Coleman Evcon
Furnace

Model # EB12B Official Coleman Evcon furnace

Here are the diagrams and repair parts for Official Coleman Evcon EB12B furnace, as well as links to manuals and error code tables, if available.

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Installation guide
Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 38 parts  |
Flr Sub Base 3500-1071/B
#7

Functional replacement parts diagram

Flr sub base

Part #3500-1071/B

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

Furnace Limit Switch 3500-3121
Furnace limit switch

Part #3500-3121

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

Cover 3500-1271
#6

Functional replacement parts diagram

Cover

Part #3500-1271

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

Furnace Temperature Limit Switch 7142-3091
Furnace temperature limit switch

Part #7142-3091

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

Furnace Heat Sequencer 3110-3571
#20

Functional replacement parts diagram

Furnace heat sequencer

Part #3110-3571

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

Furnace Heat Sequencer 3120A3571
#20B

Functional replacement parts diagram

Furnace heat sequencer

Part #3120A3571

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

Condst Trap 3240-3051
#27

Functional replacement parts diagram

Condst trap

Part #3240-3051

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

Jumper Bar 3500-378P
#24

Functional replacement parts diagram

Jumper bar

Part #3500-378P

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

Transformer 3300-3861
#19

Functional replacement parts diagram

Transformer

Part #3300-3861

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

Heat Element 3500-4121
#15D

Functional replacement parts diagram

Heat element

Part #3500-4121

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 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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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 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 does my treadmill have no display?

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

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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 is my treadmill's walking belt slipping?

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

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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…

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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'…

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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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