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York
Heating & Cooling Combined Unit

Model # D3CG120N20025 Official York heating & cooling unit

Here are the diagrams and repair parts for Official York D3CG120N20025 heating & cooling unit, as well as links to manuals and error code tables, if available.

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

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Model diagram and schematic

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ALL PARTS
Showing 10 of 171 parts  |
Capacitor 024-20045-700

#11

All parts diagram

Capacitor

Part #024-20045-700

Replaced by #12907

?
Manufacturer substitution
This part replaces 024-20045-700. Substitute parts can look different from the original.
This item is not returnable
$4.87 | 
17% OFF Phone Price : $5.87
In Stock
Elec Cntrllr 025-20963-000

#13

All parts diagram

Elec cntrllr

Part #025-20963-000

$19.63
In Stock
Igniter 025-29010-000

#48A

All parts diagram

Igniter

Part #025-29010-000

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

Header Suction (sys #2)top 373-03332-730

#89A

All parts diagram

Header suction (sys #2)top

Part #373-03332-730

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

Accessories - Non-electrical Propane Conversion Kit (canada) 1NP0427

#NI

All parts diagram

Accessories - non-electrical propane conversion kit (canada)

Part #1NP0427

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

Top Panel 063-87680-000
#129

Control package diagram

Top panel

Part #063-87680-000

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

Coil 363-94986-700

#84

All parts diagram

Coil

Part #363-94986-700

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

Accessories (electrical) Anti-recycle Timer 2AC04700424

#NI

All parts diagram

Accessories (electrical) anti-recycle timer

Part #2AC04700424

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

Transformer 025-25973-000

#29

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Transformer

Part #025-25973-000

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

Relay, Cnt'l (blower Timer) 024-26090-000

#28D

All parts diagram

Relay, cnt'l (blower timer)

Part #024-26090-000

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

Most common symptoms to help you fix your heating & cooling combined units

Choose a symptom to see related heating and air conditioning system repairs.

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Why is my furnace not blowing hot enough?

Thermostat problem, clogged air filter, burner failure…

Read more

Why isn’t my air conditioner cooling well?

Dirty air filter, clogged condenser coils, low refrigerant charge, faulty compressor…

Read more

Why isn’t my air conditioner cooling?

Thermostat problems, bad compressor/condenser fan capacitor, lack of refrigerant, failed compressor…

Read more

Why won’t my furnace burners won’t stay lit?

Dirty flame sensor, failed flame sensor, damaged burner, bad high limit switch…

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Why won't my air conditioner turn on?

Main causes: errant thermostat settings, lack of electrical power, clogged drain line, wiring failure, control failure.…

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Why won't my furnace turn on?

Main causes: Errant thermostat settings, lack of power, bad interlock switches, lack of exhaust ventilation, wiring fail…

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Most common repair guides to help fix your heating & cooling combined units

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

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How to unclog the air conditioner drain line

How to unclog the air conditioner drain line

The condensate drain line for your central air conditioner can clog with mold and mildew. Water will back up and start d…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace the furnace flame sensor

How to replace the furnace flame sensor

The flame sensor detects when furnace burner flames are lit. You may need to replace the flame sensor if flames only sta…

Read more
Repair difficulty
Time required
 15 minutes or less
How to replace a heating and air conditioning system thermostat

How to replace a heating and air conditioning system thermostat

The control thermostat for your HVAC system can stop working. This repair guide shows how to replace it.…

Read more
Repair difficulty
Time required
 30 minutes or less

Effective articles & videos to help repair your heating & cooling combined units

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

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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 enjoy all the online benefits we offer on our Sears PartsDirect website

How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

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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.…

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