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York
Heating & Cooling Combined Unit

Model # D3CE120A25MP Official York heating & cooling unit

Here are the diagrams and repair parts for Official York D3CE120A25MP heating & cooling unit, as well as links to manuals and error code tables, if available.

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  • 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”.

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For DIY troubleshooting advice and repair guides, visit our repair help section.

Model diagram and schematic

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Showing 10 of 99 parts  |
Panel, R/h Side (assembly) 373-16498-002
#3

Economizer fresh air hood diagram

Panel, r/h side (assembly)

Part #373-16498-002

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

Valve Core 022-02475-000

#54

All parts diagram

Valve core

Part #022-02475-000

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

Accessories- (electrical) Electric Heater (240v) 24 Kw 2HE04512425

#NI

All parts diagram

Accessories- (electrical) electric heater (240v) 24 kw

Part #2HE04512425

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

Cap Connector 025-21191-000

#12

All parts diagram

Cap connector

Part #025-21191-000

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

Hermetic Compressor 015-02583-705

#1

All parts diagram

Hermetic compressor

Part #015-02583-705

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

Disconnect Switch (molded Case) 024-21215-701

#27

All parts diagram

Disconnect switch (molded case)

Part #024-21215-701

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

Isolator, Compr (8 Reqd Top) 028-12357-000

#2

All parts diagram

Isolator, compr (8 reqd top)

Part #028-12357-000

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

Elecric Heater (240v) 9kw (7-1/2 And 8-1/2t) 2HE04510925

#NI

All parts diagram

Elecric heater (240v) 9kw (7-1/2 and 8-1/2t)

Part #2HE04510925

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

Header, Condenser Coil (liquid) 363-94986-050

#60

All parts diagram

Header, condenser coil (liquid)

Part #363-94986-050

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

Header, Evap (btm) 373-03332-040

#64

All parts diagram

Header, evap (btm)

Part #373-03332-040

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...

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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...

Read more

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

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

Get answers to frequently asked questions about Sears and Sears PartsDirect....

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