Ruud uged-07emags, was lighting and going out, now is in lockout. pressure switch is fine, inducer motor was getting hot. thought it may be the circuit board but after researching part numbers I discovered that the board on the furnace is not even a board that goes with my furnace, the board was apparently replaced before we moved in, with a different type of board. There is no flame sensor on this unit. Do you have any ideas as to what I could do to diagnose my problem with this furnase