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ICP
Furnace

Model # NHGG125AK03 Official ICP furnace

Here are the diagrams and repair parts for Official ICP NHGG125AK03 furnace, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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ALL PARTS
Showing 10 of 100 parts  |
Fan Relay 92840
#18

Functional replacement parts diagram

Fan relay

Part #92840

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

L Gas Valve 1003755
#5A

Functional replacement parts diagram

L gas valve

Part #1003755

Replaced by #36C03-333

?
Manufacturer substitution
This part replaces 1003755. Substitute parts can look different from the original.
$277.97 | 
$12.00 OFF Phone Price : $289.97
In Stock
N Gas Valve 1003754
#5

Functional replacement parts diagram

N gas valve

Part #1003754

Replaced by #36C03-333

?
Manufacturer substitution
This part replaces 1003754. Substitute parts can look different from the original.
$277.97 | 
$12.00 OFF Phone Price : $289.97
In Stock
Furnace Blower Fan Wheel (replaces 1149145, 1162422, 1645225, 1665008, 1680076, 1695012, 24020801, 600957, 601004, 72978, H600587) 600587
#12B

Functional replacement parts diagram

Furnace blower fan wheel (replaces 1149145, 1162422, 1645225, 1665008, 1680076, 1695012, 24020801, 600957, 601004, 72978, h600587)

Part #600587

$130.20 | 
8% OFF Phone Price : $142.20
In Stock
Capacitor 638105
#11A

Functional replacement parts diagram

Capacitor

Part #638105

Replaced by #12910

?
Manufacturer substitution
This part replaces 638105. Substitute parts can look different from the original.
$8.37 | 
11% OFF Phone Price : $9.37
In Stock
Furnace Blower Fan Wheel 611795
#12A

Functional replacement parts diagram

Furnace blower fan wheel

Part #611795

$168.16
In Stock
Heat Exchanger 1150183
#4B

Functional replacement parts diagram

Heat exchanger

Part #1150183

$626.12
In Stock
Blower Wheel 638195
#12D

Functional replacement parts diagram

Blower wheel

Part #638195

$443.93
In Stock
Blower Wheel 96319
#12C

Functional replacement parts diagram

Blower wheel

Part #96319

$232.85
In Stock
Transformer 638010
#16

Functional replacement parts diagram

Transformer

Part #638010

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

Symptoms for treadmills

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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

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…

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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

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How to get your furnace ready for winter

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

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