Description
Furnace Flame Sensor Replaces Lennox Armstrong Ducane 102431-01 LB-74940A LB74940A
This is a new Furnace Flame Sensor. It replaces the part numbers listed below.
Function:
A flame sensor senses the furnace flame ensuring that ignition has occurred. It then monitors the flame until the furnace shut down. Should combustion be disrupted for any reason the sensor loses its signal and shuts the gas valve off.
Replaces Old Part #s:
102431-01 LB-74940A LB74940A
Repair Difficulty Level:
