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Friedrich
Heating & Cooling Combined Unit

Model # THC09R50 Official Friedrich central packaged terminal unit

Here are the diagrams and repair parts for Official Friedrich THC09R50 central packaged terminal unit, as well as links to manuals and error code tables, if available.

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Owner’s manual

Model diagram and schematic

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ALL PARTS
Showing 10 of 104 parts  |
Tray 21058876
#19

Unit assembly diagram

Tray

Part #21058876

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

Drain Kit 25031800

#NI12

All parts diagram

Drain kit

Part #25031800

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

Thermostat 21058517
#65A

Control box assembly diagram

Thermostat

Part #21058517

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

Coil Evaporator 25018600
#10

Unit assembly diagram

Coil evaporator

Part #25018600

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

Check Valve 21058587
#10C

Unit assembly diagram

Check valve

Part #21058587

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

Terminal Board 21058986

#NI03

All parts diagram

Terminal board

Part #21058986

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

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 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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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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Time required
 15 minutes or less
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How to replace the furnace flame sensor

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

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Maintaining your air conditioner

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