ICP
Furnace

Model # NULK050MF05 Official ICP condensing upflow gas furnace

Here are the diagrams and repair parts for Official ICP NULK050MF05 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 161 parts  |

Module 1005651
#5

Functional replacement parts/769455 diagram

Module

Part #1005651

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

Furnace Temperature Limit Switch 1003176
#9A

Functional replacement parts/769455 diagram

Furnace temperature limit switch

Part #1003176

In Stock
Furnace Blower Fan Wheel (replaces 1149145, 1162422, 1645225, 1665008, 1680076, 1695012, 24020801, 600957, 601004, 72978, H600587) 600587
#10A

Functional replacement parts/769455 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
Furnace Blower Fan Motor 613209
Furnace blower fan motor

Part #613209

$499.86
$12.00 OFF Phone Price : $511.86
In Stock
Timer Fan 1005963
#4

Functional replacement parts/769437 diagram

Timer fan

Part #1005963

Replaced by #7070

?
Manufacturer substitution
This part replaces 1005963. Substitute parts can look different from the original.
$86.18
7% OFF Phone Price : $92.18
In Stock
Furnace Temperature Limit Switch, 130-degrees 1003174
Furnace temperature limit switch, 130-degrees

Part #1003174

Replaced by #1013105

?
Manufacturer substitution
This part replaces 1003174. Substitute parts can look different from the original.
This item is not returnable
In Stock
Timer 1005964
#4

Functional replacement parts/769455 diagram

Timer

Part #1005964

Replaced by #7070

?
Manufacturer substitution
This part replaces 1005964. Substitute parts can look different from the original.
$86.18
7% OFF Phone Price : $92.18
In Stock
Capacitor 613531
#13A

Functional replacement parts/769437 diagram

Capacitor

Part #613531

Replaced by #12910

?
Manufacturer substitution
This part replaces 613531. Substitute parts can look different from the original.
$8.37
11% OFF Phone Price : $9.37
In Stock
Box Collecto 1000275
#26

Non-functional replacement parts/769455 diagram

Box collecto

Part #1000275

In Stock
O-ring 1000599
O-ring

Part #1000599

In Stock

Symptoms for treadmills

Choose a symptom to see related treadmill repairs.

Main causes: damaged walking belt, improper belt tension, lack of belt lubricant, bad drive motor…

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

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

Main causes: missing safety key, bad control console, wiring failure, faulty motor control board, bad drive motor…

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

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

Main causes: no power, bad power cord, tripped or faulty overload switch, bad power switch, wiring failure, bad motor co…

Repair guides for treadmills

These step-by-step repair guides will help you safely fix what’s broken on your treadmill.

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…

Repair difficulty
Time required
 15 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'…

Repair difficulty
Time required
 15 minutes or less
How to replace a treadmill walking board

How to replace a treadmill walking board

A worn-out walking board creates friction with the walking belt and causes the belt to slow down during use. Replace the…

Repair difficulty
Time required
 30 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.

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.…