Description
The Lennox 12F19 is a flame sensor, which is an essential safety device of the Lennox HVAC system. It is a small, cylindrical detector approximately 1/4 inch in diameter which is constructed of 18-gauge wire. In the course of operation the flame sensor is able to detect the flame of a pilot light. This signal is then forwarded to the furnace control board for proper and safe burning of the gas. Making this replacement with a Lennox enables correct flame detection hence avoiding instances where the furnace or gas leaks.
