Starts sometimes then won't come on for hours

This furnace was in lock out. Aaac servuce heating and cooling reset it. It would try to start the ignitor was glowing low. After checking the wires the plug on the board was bad. It needs a new board. Aaac wedged the plug to where it touches but this should be replaced asap. Furnace won't start everytime due to bad circuit board. It shuts down after three trys and won't try again. Rod