Furnace

Model # GUJ125N20C1 Official ICP gas furnace

Here are the diagrams and repair parts for Official ICP GUJ125N20C1 gas furnace, as well as links to manuals and error code tables, if available.

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Browse Parts for
GUJ125N20C1 Gas Furnace
Trans 40 Va 1008782
#8

Unit parts diagram

Trans 40 va

Part #1008782

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

Thermocouple 1010273
#16

Unit parts diagram

Thermocouple

Part #1010273

Replaced by #H06E-36

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Manufacturer substitution
This part replaces 1010273. Substitute parts can look different from the original.
$14.91
12% OFF Phone Price : $16.91
Back Order
Cap Rnrd 1094956
#6

Unit parts diagram

Cap rnrd

Part #1094956

Replaced by #12908

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Manufacturer substitution
This part replaces 1094956. Substitute parts can look different from the original.
$107.77
10% OFF Phone Price : $119.77
In Stock
Fan Tmr Cont 1010031
#7

Unit parts diagram

Fan tmr cont

Part #1010031

Replaced by #1170063

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Manufacturer substitution
This part replaces 1010031. Substitute parts can look different from the original.
$217.41
5% OFF Phone Price : $229.41
In Stock
Panel Cutoff 721020008
#CC

Unit parts diagram

Panel cutoff

Part #721020008

In Stock
Gskt Htx Bnr 2480907
#F

Unit parts diagram

Gskt htx bnr

Part #2480907

This item is not returnable
In Stock
Furnace Blower Comb 1010239
#19

Unit parts diagram

Furnace blower comb

Part #1010239

In Stock
Baffle 707010031
#JJ

Unit parts diagram

Baffle

Part #707010031

In Stock
Conv Kit 1160991

#NI

All parts diagram

Conv kit

Part #1160991

In Stock
Furnace Burner 1008726
#12

Unit parts diagram

Furnace burner

Part #1008726

In Stock

Symptoms for water softeners

Choose a symptom to see related water softener repairs.

Main causes: faulty brine valve assembly, bad rotor valve…

Main causes: clogged drain hose, faulty rotor valve, leaky rotor valve seals…

Main causes: salt bridge inside the salt tank, bad timer, valve motor failure, faulty rotor valve, clogged venturi…

Main causes: loose water line connections, cracked water-carrying components, bad rotor valve seals…

Main causes: lack of electrical power, bad power transformer, faulty timer…

Main causes: empty salt tank, salt bridge, depleted resin, clogged or damaged venturi, broken rotor position switch, fai…

Main causes: broken resin tank screen, bad resin tank seals, cracked upper distributor in resin tank…

Main causes: broken water flow meter, faulty timer, water flow to softener is bypassed…

Repair guides for water softeners

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

How to replace a water softener venturi

How to replace a water softener venturi

The venturi valve in your water softener draws brine water from the salt tank to the resin tank for regeneration. Follow…

Repair difficulty
Time required
 15 minutes or less
How to replace a water softener rotor position switch

How to replace a water softener rotor position switch

The rotor position switch detects the position of the valve rotor. If the rotor position switch fails, follow these step…

Repair difficulty
Time required
 30 minutes or less
How to replace a water softener timer

How to replace a water softener timer

The timer is the control board you use to program the water softener. If the timer isn’t accepting commands when you pus…

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 water softener.

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.…