ICP
Furnace

Model # NULK125DK06 Official ICP condensing upflow gas furnace

Here are the diagrams and repair parts for Official ICP NULK125DK06 condensing upflow gas furnace, as well as links to manuals and error code tables, if available.

There are a couple of ways to find the part or diagram you need:

  • Click a diagram to see the parts shown on that diagram.
  • In the search box below, enter all or part of the part number or the part’s name.

Not all parts are shown on the diagrams—those parts are labeled NI, for “not illustrated”.

We encourage you to save the model to your profile, so it’s easy to access parts and manuals for your appliance whenever you log in.

For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

SEARCH WITHIN THIS MODEL

?

This is the number corresponding to the part on the diagram / schematic

Search
ALL PARTS
Showing 10 of 78 parts  |

Switch 611872
#17

Functional replacement parts diagram

Switch

Part #611872

In Stock
Capacitor 1006176
#13

Functional replacement parts diagram

Capacitor

Part #1006176

Replaced by #12910

?
Manufacturer substitution
This part replaces 1006176. Substitute parts can look different from the original.
$8.37
11% OFF Phone Price : $9.37
In Stock
Control Limi 1005763
#52

Functional replacement parts diagram

Control limi

Part #1005763

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

Elbow Rubber 1002532
#51

Functional replacement parts diagram

Elbow rubber

Part #1002532

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

Exchanger 1002295
#1

Functional replacement parts diagram

Exchanger

Part #1002295

In Stock
Coupling 1002522
#50

Functional replacement parts diagram

Coupling

Part #1002522

In Stock
Furnace Fan Control Relay 1000742
#15

Functional replacement parts diagram

Furnace fan control relay

Part #1000742

$35.62
12% OFF Phone Price : $40.62
In Stock
O-ring 1000599
#2

Functional replacement parts diagram

O-ring

Part #1000599

In Stock
Bracket 1003363
#20

Non-functional replacement parts diagram

Bracket

Part #1003363

In Stock
Board Termin 612254
#19

Functional replacement parts diagram

Board termin

Part #612254

In Stock

Symptoms for upright freezers

Main causes: clogged or frozen defrost drain tube…

Repair guides for upright freezers

How to replace a freezer control panel

How to replace a freezer control panel

A freezer control panel that doesn’t show the temperature or respond when you press the buttons could be broken. This DI…

Repair difficulty
Time required
 15 minutes or less
How to replace a freezer door switch

How to replace a freezer door switch

When the door switch fails, the freezer can’t detect that the door is closed. Follow the steps in this repair guide to r…

Repair difficulty
Time required
 15 minutes or less
How to replace a freezer thermistor

How to replace a freezer thermistor

When the thermistor can’t sense the freezer temperature, the freezer is colder or warmer than the set temperature. Follo…

Repair difficulty
Time required
 45 minutes or less

Effective articles & videos to help repair your furnaces

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.…

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.…

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.…