Thermal Zone
Furnace

Model # GU040M12A Official Thermal Zone gas furnace

Here are the diagrams and repair parts for Official Thermal Zone GU040M12A gas furnace, 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 27 parts  |

Furnace Electronic Control Board 903106
#11

90+ upflow condensing furnace diagram

Furnace electronic control board

Part #903106

In Stock
Orifice 661045
#16

90+ upflow condensing furnace diagram

Orifice

Part #661045

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

Blower Wheel 667251
#6

90+ upflow condensing furnace diagram

Blower wheel

Part #667251

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

Furnace Vent Limit Switch, 160-degree 626461
#27

90+ upflow condensing furnace diagram

Furnace vent limit switch, 160-degree

Part #626461

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

Central Air Conditioner Air Handler Drain Pan Connector 663714
#23

90+ upflow condensing furnace diagram

Central air conditioner air handler drain pan connector

Part #663714

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

Gas Valve 624586
#13

90+ upflow condensing furnace diagram

Gas valve

Part #624586

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

Pressure Swt 632252
#18

90+ upflow condensing furnace diagram

Pressure swt

Part #632252

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

Sensor Rod 632316
#15

90+ upflow condensing furnace diagram

Sensor rod

Part #632316

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

Furnace Temperature Limit Switch 626425
#19

90+ upflow condensing furnace diagram

Furnace temperature limit switch

Part #626425

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

Transformer 621486
#3

90+ upflow condensing furnace diagram

Transformer

Part #621486

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

Repair guides for bottom-mount refrigerators

How to replace a door gasket in a French-door refrigerator

How to replace a door gasket in a French-door refrigerator

The door gasket, often called a door seal, seals the gap around the door to keep the cold air in and the warm air out. R…

Repair difficulty
Time required
 15 minutes or less
How to replace a refrigerator water valve

How to replace a refrigerator water valve

Replace the water valve that feeds water to the ice maker and water dispenser if it no longer controls the flow of water…

Repair difficulty
Time required
 15 minutes or less
How to replace a refrigerator defrost control assembly

How to replace a refrigerator defrost control assembly

Follow these steps to replace the defrost control assembly if your Kenmore or LG French door refrigerator displays an er…

Repair difficulty
Time required
 120 minutes or less

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How to get your furnace ready for winter

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