Diagnostic : ac was freezing up door to air handler was off on arrival. Blower was running fine. Pressures were off due to the door not being properly secured. As soon as the door was put back on and the unit started up pressures stabilized and were fine. Coil temp was 38 after observing for 20 and did not freeze back up. I removed door from unit to test it and it immediately began to freeze again. Door needs to be properly secured in order for unit to function properly. House currently getting a 17.6 degree split subcool is a recommend target 13.