not looking for how too , just diagnosis
Ruud UPBK 042JA2 H.P.with matching Rheem AH 4 ton coil but the jet c/o for the 3.5, all metal ductwork , clean coil and filters
using the chart on equipment , my VL Temp should be 68-70 degrees according to AMB TEMP and VL press.instead its 45-48 degrees which is great if thats an indication coil temp
head pressures and VL seem fine and there is a 16 degree drop accross the coil and a 20 temp rise over condenser
seems like i'm losing my cooling effic. in the VL instead of the coil. any advice much appreciated...