Ya it's across the line and the MC contactor isn't picking because the run contactor isn't sending the 110vac feed from S10 through MCA output chip. I've replaced output chips and input chips and even swapped the entire board. Tech support is telling me to change the run contactor although we energized the coil and it's still not receiving a feed from MCA output to feed N.O. 13/14 On the run contactor. The inputs runi runa mcci are all changing briefly from 0 to 1 however mcai isn't changing at all. Stumped.