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Thermal Zone
Furnace

Model # GD040M12A Official Thermal Zone gas furnace

Here are the diagrams and repair parts for Official Thermal Zone GD040M12A 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
#9

90+ downflow furnace diagram

Furnace electronic control board

Part #903106

$297.66
In Stock
Orifice 661045
#14

90+ downflow furnace diagram

Orifice

Part #661045

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

Central Air Conditioner Air Handler Drain Pan Connector 663714
#20

90+ downflow 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

Blower Wheel 667251
#6

90+ downflow 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
#24

90+ downflow furnace diagram

Furnace vent limit switch, 160-degree

Part #626461

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

Sensor Rod 632316
#13

90+ downflow furnace diagram

Sensor rod

Part #632316

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

Limit Sw 626418
#17

90+ downflow furnace diagram

Limit sw

Part #626418

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

Transformer 621486
#3

90+ downflow furnace diagram

Transformer

Part #621486

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

Gas Valve 624586
#11

90+ downflow furnace diagram

Gas valve

Part #624586

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

Limit Switch, Auxillary (120f) (not Shown) 626444
#26

90+ downflow furnace diagram

Limit switch, auxillary (120f) (not shown)

Part #626444

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

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