Hi I have a question about a system I am looking at.
It's a dual evaporator walk in cooler running 404a.
It has low head pressure, high suction pressure, very low superheat on both evaporators, and the whole compressor is icing up. Al so the sight glass has fast moving bubbles pretty much constantly.
My guess is that the installer used the wrong size orfices or TXV (too large) and it's flooding back.
Any input would be appreciated.