I've got a quick question on a system I've been working on. The problem I am having is after the tstat is satisfied and the solinoid valve closes, the system pumps down and shuts off on low pressure. That is great but seconds after this process occurs my suction pressure rises quickly and short cycling occurs. Why the rapid pressure gain? I know that there should be some pressure rise but not that quick. Anybody have any thoughts on this condition? Thanks for the input




P.S. I've got a full sight glass at the compressor after the filter drier. The system has a short line set and the refrigerant is R-22. Superheat at the compressor is 38F. Also it seems every morning the evap is iced up. After removing the ice the system operates as described above.