Type: Posts; User: Perennial Student
I'm with timjimbob. Best way to start isolating the problem since it is intermittent.
Personally, after the mickey-mousing they did, I would install a new board and a wiring harness. (or at least go through, repair and label and land every wire per schematic)
You may have a restriction between your condenser and the sightglass. Clogged drier, maybe?
On a centrifugal compressor, seals are in place so that very little lubricating oil actually comes in contact with the refrigerant. In recip systems, oil and refrigerant travel together and occupy...