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Furnace

Model # 1751 Official Lennox furnace

Here are the diagrams and repair parts for Official Lennox 1751 furnace, as well as links to manuals and error code tables, if available.

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Model diagram and schematic

SEARCH WITHIN THIS MODEL

ALL PARTS

Showing 10 of 63 parts |

Limit Control 10G5201

Furnace diagram

Limit control

Part #10G5201

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

Pilot Burner 18G9001

Furnace diagram

Pilot burner

Part #18G9001

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

Burner LB-17431CB

Furnace diagram

Burner

Part #LB-17431CB

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

Transformer 78H5501

Furnace diagram

Transformer

Part #78H5501

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

Blower Fan Wheel LB-29333BB

Furnace diagram

Blower fan wheel

Part #LB-29333BB

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

Flame Sensor 18G8901

Furnace diagram

Flame sensor

Part #18G8901

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

Motor 97H5701

Furnace diagram

Motor

Part #97H5701

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

Control 97H0401

Furnace diagram

Control

Part #97H0401

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

Ignition Module 18G9101

Furnace diagram

Ignition module

Part #18G9101

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

Transformer P-8-9490

Furnace diagram

Transformer

Part #P-8-9490

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

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Why does my freezer have a sheet of ice at the bottom?

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Repair guides for upright freezers

How to replace a freezer door switch

How to replace a freezer door switch

When the door switch fails, the freezer can’t detect that the door is closed. Follow the steps in this repair guide to r…

Repair difficulty

Time required

15 minutes or less

How to replace a freezer thermistor

How to replace a freezer thermistor

When the thermistor can’t sense the freezer temperature, the freezer is colder or warmer than the set temperature. Follo…

Repair difficulty

Time required

45 minutes or less

How to replace a freezer evaporator fan

How to replace a freezer evaporator fan

Air won’t circulate to cool the freezer properly when the evaporator fan fails. Follow these step-by-step instructions t…

Repair difficulty

Time required

45 minutes or less

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