Flame Sensor Disconnected

[Tshooter32]

- on the furnace controller board, does the flame sensor(orange) get connected?
what pin number on the 9 pin connector, the wire popped loose so the main burners are not get-
ting lit? could the flame sensor be the problem? Thanks. Tshooter32

[nomadpeo]

what brand ? the distributor should have a tech support number with docs to send you if you don't have another access otherwise.

[van]

some controllers do not use the flame sensor wire, they use the ignition wire to sense. You need to know what manufacturer and the wiring schematic, but I have found that an additional ground is quite helpful from the burner assy. to the controls.