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Friedrich
Heating & Cooling Combined Unit

Model # TEC12K00 Official Friedrich central packaged terminal unit

Here are the diagrams and repair parts for Official Friedrich TEC12K00 central packaged terminal 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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Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 106 parts  |
Rework Kit 25009900

#NI13

All parts diagram

Rework kit

Part #25009900

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

Collar Assembly 25009700
#44A

Air handler diagram

Collar assembly

Part #25009700

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

Coil Evaporator 25018600
#10

Unit assembly diagram

Coil evaporator

Part #25018600

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

Clip,t Sta 21058518
#66A

Control box assembly diagram

Clip,t sta

Part #21058518

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

Isolator 21063375
#42

Air handler diagram

Isolator

Part #21063375

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

Insulation 21058387
#48

Air handler diagram

Insulation

Part #21058387

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

Holder,fus 21058446
#74A

Control box assembly diagram

Holder,fus

Part #21058446

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

Filter Mol 21058402
Filter mol

Part #21058402

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

Push Button 21058728
#68

Control box assembly diagram

Push button

Part #21058728

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

Rework Kit 25009901

#NI14

All parts diagram

Rework kit

Part #25009901

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

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Why is my furnace not blowing hot enough?

Thermostat problem, clogged air filter, burner failure…

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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 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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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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How to replace a heating and air conditioning system thermostat

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