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York
Heating & Cooling Combined Unit

Model # D3CG120N20025MK Official York heating & cooling unit

Here are the diagrams and repair parts for Official York D3CG120N20025MK heating & cooling unit, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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Showing 10 of 184 parts  |
Elec Cntrllr 025-20963-000

#18

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Elec cntrllr

Part #025-20963-000

$19.63
In Stock
Igniter 025-29010-000

#51

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Igniter

Part #025-29010-000

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

Switch Limit (unit Style B-d) 025-26392-012

#53B

All parts diagram

Switch limit (unit style b-d)

Part #025-26392-012

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

Motor 024-24110-001

#8

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Motor

Part #024-24110-001

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

Module 025-27762-000

#50

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Module

Part #025-27762-000

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

Spacer Mtr 063-92626-000

#79

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Spacer mtr

Part #063-92626-000

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

Housing Vent 063-90041-000

#76

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Housing vent

Part #063-90041-000

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

Box Flue 063-89949-000

#39

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Box flue

Part #063-89949-000

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

Fan Guard 026-25528-000

#72

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Fan guard

Part #026-25528-000

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

Wiring Reference Label 035-11687-000

#30

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Wiring reference label

Part #035-11687-000

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…

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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…

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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…

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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.…

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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

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

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