Unit was off on high head pressdure. I shut unit off and cleaned the coil. Now the York model YC120COOA2AAA1A air conditioner is flashing 2 blinks which is code "control waiting ASCO or ASCD" unit is not running. I have a call from the T-stat. I have reset power to indoor and outdoor unit. What does ASCO or ASCD stand for? How do I reset or get the unit to run.