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Thermal Zone
Heating & Cooling Combined Unit

Model # PA48M-1S Official Thermal Zone 12 seer single-package air conditioner

Here are the diagrams and repair parts for Official Thermal Zone PA48M-1S 12 seer single-package air conditioner, 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 41 parts  |
Fan Blade 667278
#4

12 seer single package ac diagram

Fan blade

Part #667278

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

Blower Wheel 667037
#22

12 seer single package ac diagram

Blower wheel

Part #667037

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

Fan Motor 621721
#2

12 seer single package ac diagram

Fan motor

Part #621721

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

Transformer 621708
#31

12 seer single package ac diagram

Transformer

Part #621708

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

Contactor 621662
#32

12 seer single package ac diagram

Contactor

Part #621662

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

Distributor Assembly 663584
#17

12 seer single package ac diagram

Distributor assembly

Part #663584

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

Indoor Coil D03626
#19

12 seer single package ac diagram

Indoor coil

Part #D03626

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

Blower Foot 262970
#20

12 seer single package ac diagram

Blower foot

Part #262970

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

Elbow 3/4" Mpt 669184
#15

12 seer single package ac diagram

Elbow 3/4" mpt

Part #669184

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

Blower Relay 621097
#30

12 seer single package ac diagram

Blower relay

Part #621097

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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Repair difficulty
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

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

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

Learn how to maintain your central air conditioner to keep it running smoothly all summer long.…

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