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Thermal Zone
Heating & Cooling Combined Unit

Model # PN042K096-1 Official Thermal Zone single-package gas pack

Here are the diagrams and repair parts for Official Thermal Zone PN042K096-1 single-package gas pack, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

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PART LIST
Showing 10 of 84 parts  |
Control Board
#54

Single package gas pack diagram

Control board

Part #903162

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

Fan Blade
#23

Single package gas pack diagram

Fan blade

Part #667278

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

Fan Motor
#22

Single package gas pack diagram

Fan motor

Part #621721

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

Flame Contrl
#65A

Single package gas pack diagram

Flame contrl

Part #626417

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

Central Air Conditioner Heat Exchanger
#67A

Single package gas pack diagram

Central air conditioner heat exchanger

Part #903477

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

Time Delay
#28

Single package gas pack diagram

Time delay

Part #621586

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

Limit Switch
#56

Single package gas pack diagram

Limit switch

Part #626432

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

Heat Exchange
#67

Single package gas pack diagram

Heat exchange

Part #903475

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

Furnace Electronic Control Board
#29

Single package gas pack diagram

Furnace electronic control board

Part #903106

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

Blower Motor
#20

Single package gas pack diagram

Blower motor

Part #914972

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

Symptoms common to all heating & cooling combined units

Choose a symptom to see related heating and air conditioning system repairs.

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October 25, 2023

Why is my furnace not blowing hot enough?

By Lyle Weischwill

Thermostat problem, clogged air filter, burner failure…

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April 20, 2023

Why isn’t my air conditioner cooling well?

By Lyle Weischwill

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

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April 20, 2023

Why isn’t my air conditioner cooling?

By Lyle Weischwill

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

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April 20, 2023

Why won't my air conditioner turn on?

By Lyle Weischwill

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

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April 20, 2023

Why won't my furnace turn on?

By Kim Hillegass

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

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April 20, 2023

Why won’t my furnace burners won’t stay lit?

By Lyle Weischwill

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

Read more

Repair guides common to all 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
March 16, 2022
By Lyle Weischwill

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
March 16, 2022
By Lyle Weischwill

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
March 03, 2022
By Lyle Weischwill

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

Articles and videos common to all 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
May 24, 2023
By Lyle Weischwill

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
May 19, 2023
By Lyle Weischwill

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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Top questions about Sears and Sears PartsDirect
June 29, 2022
By Lyle Weischwill

Top questions about Sears and Sears PartsDirect

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