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Friedrich
Heating & Cooling Combined Unit

Model # TEC12R50 Official Friedrich central packaged terminal unit

Here are the diagrams and repair parts for Official Friedrich TEC12R50 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  |
Thermostat Knob 21058437
#66

Control box assembly diagram

Thermostat knob

Part #21058437

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

Rework Kit 25009900

#NI13

All parts diagram

Rework kit

Part #25009900

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

Compr Repl 21091572
#11A

Unit assembly diagram

Compr repl

Part #21091572

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

Extension Spring 21058530
Extension spring

Part #21058530

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

Holder,fus 21058444
#74

Control box assembly diagram

Holder,fus

Part #21058444

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

Check Valve 21058568
#10C

Unit assembly diagram

Check valve

Part #21058568

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

Thermostat 21059023

#NI08

All parts diagram

Thermostat

Part #21059023

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

Low Louver 21058685
#93

Front cover diagram

Low louver

Part #21058685

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

Pump Condenser 25032900
#60A

Control box assembly diagram

Pump condenser

Part #25032900

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…

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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

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
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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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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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Time required
 30 minutes or less

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

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Maintaining your air conditioner

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