- 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
I would just add that when a pin connection comes loose it is usually a good idea to put a new pin connector on the sensor wire. There can be a great deal of intermittent lock out if the old pin fits loosely in the plug. Just my two cents..