Residential service call for a customer in The Colony and Upon arrival found upstairs coil draining into the emergency drain pan. Checked level on coil and it was leaning correctly. Checked drain ports, found that the main line didn’t get a strap put back on causing main drain to be higher than drain port. Reconnected lines and strapped down drain line. Watched system drain for 15min and saw no more water coming out of secondary. System is now draining at this time.