Lennox 69W43 Flame Sensor Kit

An essential safety part for Lennox gas-fired boilers and furnaces is the 69W43 Flame Sensor. This tiny ceramic sensor is installed using a flange right inside the furnace chamber. Its average dimensions are 0.5 inches length, 0.2 inches broad, and 4.1 inches high. The flame sensor uses heat radiation from the flame to identify its presence when the furnace is operating. The furnace control board receives this signal and ensures that the system keeps running securely. The Lennox 69W43 Flame Sensor is resistant to high temperatures inside the furnace chamber since it is made of sturdy ceramic material. When a malfunctioning flame sensor permits the furnace to run without a flame, it might jeopardize safety and perhaps cause a gas leak. The Lennox 69W43 Flame Sensor can be used to replace a broken sensor, ensuring the safe and dependable operation of your Lennox HVAC system.