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Precision Safety: High-sensitivity vent safety switch detects flue blockages to prevent CO poisoning
preventing the operation of the gas valve if flue gas venting is obstructed or the inducer blower fails
Using a standard socket wrench
Durable Construction: Built to withstand the high-cycle demands of commercial and industrial HVAC environments
Lennox 12F19 Flame Sensor Precision Safety: High-sensitivity vent safetyThe Lennox 12F19 Flame Sensor is a critical safety component designed for precise flame rectify detection in residential and commercial gas fired heating systems. This genuine OEM part is engineered to monitor the burner's pilot or main flame, sending a continuous microamp signal to the furnace control board. If the 12F1901 furnace sensor fails to detect a flame, it immediately signals the gas valve to shut down, preventing hazardous gas accumulation.
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