Lennox 43K53 Flame Sensor Flame Sensor

Flame Sensor

The Flame Sensor is a high quality replacement for your original part.

Lennox Flame Sensor is designed to shut off the burner if flame is too high.

The Flame Sensor (part number 43K53) can be mounted in and outside of the flue where it senses flame intensity and wirelessly sends the information to the Climate System Controller. This allows for greater efficiency and protection against gas leaks, ensuring your safety, home security, and energy savings.

Lennox Flame Sensor, 43K53

Five-wire flame sensor monitors gas burners to prevent leaking and corrosion. Flame sensor features a pilot safety circuit that ensures relighting of the pilot or burner every time. Flame sensor runs on 24 VAC and comes with a 4 ft. wire harness.

The Lennox 43K53 Flame Sensor is designed to be installed onto a natural gas or propane furnace and monitors the flame from the unit's burners. This flame sensor checks combustion activity and automatically controls the burner to ensure usage of optimal gas levels for maximum fuel efficiency.

This Lennox 43K53 flame sensor is designed for gas furnaces and gas fireplaces. It will detect flame, shine through walls, and senses the complete burn pattern of a 75,000 BTU furnace or fireplace.