Friedrich
Heating & Cooling Combined Unit

Model # THC15K34 Official Friedrich central packaged terminal unit

Here are the diagrams and repair parts for Official Friedrich THC15K34 central packaged terminal 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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ALL PARTS
Showing 10 of 103 parts  |

Thermostat 21059023

#NI08

All parts diagram

Thermostat

Part #21059023

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

Overload 61764506
#13

Unit assembly diagram

Overload

Part #61764506

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

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

Line Cord 21058584
#71B

Control box assembly diagram

Line cord

Part #21058584

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

Rework Kit 25010100

#NI13

All parts diagram

Rework kit

Part #25010100

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

Short Shaft 25009600
#40

Air handler diagram

Short shaft

Part #25009600

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

Access Cover 21062325
#32

Air handler diagram

Access cover

Part #21062325

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

Transformer 21056899

#NI09

All parts diagram

Transformer

Part #21056899

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.

Thermostat problem, clogged air filter, burner failure…

Dirty air filter, clogged condenser coils, low refrigerant charge, faulty compressor…

Thermostat problems, bad compressor/condenser fan capacitor, lack of refrigerant, failed compressor…

Main causes: errant thermostat settings, lack of electrical power, clogged drain line, wiring failure, control failure.…

Main causes: Errant thermostat settings, lack of power, bad interlock switches, lack of exhaust ventilation, wiring fail…

Dirty flame sensor, failed flame sensor, damaged burner, bad high limit switch…

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 replace the furnace flame sensor

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The control thermostat for your HVAC system can stop working. This repair guide shows how to replace it.…

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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