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York
Heating & Cooling Combined Unit

Model # D3CG120N20025ME Official York heating & cooling unit

Here are the diagrams and repair parts for Official York D3CG120N20025ME 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 136 parts  |
Hood 063-75440-000

#100

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Hood

Part #063-75440-000

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

Temp Dice 025-27727-001

#13

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Temp dice

Part #025-27727-001

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

Elbow 023-13649-000

#133

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Elbow

Part #023-13649-000

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

Fuse Holder 025-18283-000

#28

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Fuse holder

Part #025-18283-000

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

Grommet 028-04859-000

#135

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Grommet

Part #028-04859-000

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

Coil 363-94986-700

#87

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Coil

Part #363-94986-700

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

Panel, Access (top Gas Section) 073-18719-002

#107A

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Panel, access (top gas section)

Part #073-18719-002

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

Circuit Board 031-00652-700

#10

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Circuit board

Part #031-00652-700

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

Isolator 028-11969-000

#3

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Isolator

Part #028-11969-000

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

Sem, Valve (1/4 Od Tube) 022-08017-000

#84

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Sem, valve (1/4 od tube)

Part #022-08017-000

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…

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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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