Okay, my AC blows cool but not cold air, takes an entire day to reach 75 w/o shutting off. The filter is clean, there is no water, the vents outside are clean, the larger copper pipe is not consistantly always super cold just sometimes. When the removed the cover on the handler the coils are half cold half just regular, is that normal? no ice anywhere. Why am i not cooling quick enough, everything seems to be working but not cold!!! Sometimes when its off! it turns on on its own and blows warm air for about 6 seconds!!!!!!!