A tech had put leak stop in this unit. It wasn’t leaking when I got there. The call was “unit icing up”. I leak checked it then. I found the dryer restricted. Subcooling was 9.5 but superheat was 43 degrees. The dryer was acting like a metering device about 2’ from the TXV. This is what I found when I returned to replace the dryer. What really sucked was I brought everything on the roof to reclaim the refrigerant. Two cylinders and reclaim machine and the unit was flat. It held 57lbs of 22.

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