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Nordyne
Central Air Conditioner

Model # MT5BD-024K Official Nordyne heat pump

Here are the diagrams and repair parts for Official Nordyne MT5BD-024K heat pump, as well as links to manuals and error code tables, if available.

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Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 42 parts  |
Def Control 917178A
#19

Heat pump diagram

Def control

Part #917178A

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

Central Air Conditioner Dual-motor Run Capacitor 620777
#17

Heat pump diagram

Central air conditioner dual-motor run capacitor

Part #620777

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

Hrdstart 632464
#NI

Heat pump diagram

Hrdstart

Part #632464

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

Guard Kit 917206
#12A

Heat pump diagram

Guard kit

Part #917206

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

Valve,frig 663862
#7

Heat pump diagram

Valve,frig

Part #663862

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

Def Sensor 626491
#NI

Heat pump diagram

Def sensor

Part #626491

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

Thermostat 626520
#NI

Heat pump diagram

Thermostat

Part #626520

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

Rev Valve 669464
#3A

Heat pump diagram

Rev valve

Part #669464

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

Contactor 621661
#16

Heat pump diagram

Contactor

Part #621661

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

Valve Coil 669459
#10

Heat pump diagram

Valve coil

Part #669459

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…

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 central air conditioners

Use the advice and tips in these articles and videos to get the most out of your treadmill.

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Maintaining your air conditioner

Maintaining your air conditioner

Learn how to maintain your central air conditioner to keep it running smoothly all summer long.…

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How to prevent the 2 most common AC failures from ruining your summer

How to prevent the 2 most common AC failures from ruining your summer

Get tips to help keep your central AC running all summer long…

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Top questions about Sears and Sears PartsDirect

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

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