Thermal Zone
Heating & Cooling Combined Unit

Model # PG042M072-1S Official Thermal Zone single-package gas pack

Here are the diagrams and repair parts for Official Thermal Zone PG042M072-1S 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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Showing 10 of 81 parts  |

Furnace Electronic Control Board 903106
#29

Single package gas pack diagram

Furnace electronic control board

Part #903106

In Stock
Fan Motor 621721
#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 626417
#65A

Single package gas pack diagram

Flame contrl

Part #626417

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

Time Delay 621586
#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 626432
#56

Single package gas pack diagram

Limit switch

Part #626432

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

Control Board 903162
#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 667278
#23

Single package gas pack diagram

Fan blade

Part #667278

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

Blower Motor 914972
#20

Single package gas pack diagram

Blower motor

Part #914972

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

Sensor Rod 632316
#63

Single package gas pack diagram

Sensor rod

Part #632316

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

Switch 632212
#55

Single package gas pack diagram

Switch

Part #632212

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.

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…

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…

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.…

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

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

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How to enjoy all the online benefits we offer on our Sears PartsDirect website

Learn about all the convenient features on our Sears PartsDirect website that make your parts purchases easier.…

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