What is the correct pressure on the high side and the low side of an efficiently working system?
High side less 200psi. Low side less 50 lb. “A good rule of thumb with R410a is to run fan on High with all windows open and engine at 1500 rpm. High side pressure in PSI should be about 2.2 to 2.5 times outside air temperature in degrees F”. There are NO easy answers to this. Shinco provide a chart or charts that will assist in determining what those pressures will be.
