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Friedrich
Heating & Cooling Combined Unit

Model # VHA12K25RTB Official Friedrich single-package vertical air conditioner

Here are the diagrams and repair parts for Official Friedrich VHA12K25RTB single-package vertical air conditioner, 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 78 parts  |
Thermostat 210-590-23
#62

Refrigeration assembly diagram

Thermostat

Part #210-590-23

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

Insulated Assembly, Control Box Bottom 800-059-01
#12A

Unit assembly diagram

Insulated assembly, control box bottom

Part #800-059-01

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

Coil Assembly, Cond. 312x3rx12ht 618-502-14
#53

Refrigeration assembly diagram

Coil assembly, cond. 312x3rx12ht

Part #618-502-14

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

Connector, Straight 800-078-00

#NI02

All parts diagram

Connector, straight

Part #800-078-00

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

Cord, Line 30 Amp (5.0 Kw Heater) 210-585-84
#34B

Blower assembly diagram

Cord, line 30 amp (5.0 kw heater)

Part #210-585-84

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

Terminal Cover 615-422-00

#NI08

All parts diagram

Terminal cover

Part #615-422-00

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

Insulated Assembly Inner Wall 800-057-00
#31

Blower assembly diagram

Insulated assembly inner wall

Part #800-057-00

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

Support Drain Pan 800-047-00
#62B

Refrigeration assembly diagram

Support drain pan

Part #800-047-00

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

Pad, Isolation 618-831-00

#NI03

All parts diagram

Pad, isolation

Part #618-831-00

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

Relay 24v Spst (heat Pump) 600-840-33
#36

Blower assembly diagram

Relay 24v spst (heat pump)

Part #600-840-33

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…

Read more

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 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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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 prevent the 2 most common AC failures from ruining your summer

How to prevent the 2 most common AC failures from ruining your summer

Get tips to help keep your central AC running all summer long…

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