Hi All, I have a customer witha serve over, no idea what make as it is a custom built unit by Dollar Rae. R404A I think, Kirby/Heatcraft AE 9mg2 comp, initially cut out on LP so I screwed it down to get it running, 10psi LS 200psi HS sight glass empty, I added a sniff of gas and sight glass fills but empties again once the gauge valve is shut, Solenoid valve sounds like its working ok, so Am I looking at the TEV or going by the fact that there is no little or no suction side return pressure may it be the suction side of the comp has failed,
Dev