I'm working on my own split a/c system and can't get the charge right so the unit will cool. It is a Goodman 4 Ton system with a fixed orifice. The inside and outside coils are both clean and I have good air flow. Since I had high superheat, I added R22 and the suction and head pressure go up, but I'm not even close on the charts. I'm already at 350 head, so I didn't want to add any more freon. Looking at the numbers below, would this mean that the compressor and condensor are fine, but the evaporator is starving for refrigerant due to a clogged orifice? The unit is 8 years old.
Indoor temp= 81, RH=68
Outdoor temp=93
Suction press=65 (should be 38F), Actual suction temp=81F same as room.
Superheat=81-38=43 High
Discharge press=350, (should be 143F) Actual temp=130F
Subcool=143-130=13 Normal
Compressor amps rated at 22, pulling only 18
Thanks,
Paul
Indoor temp= 81, RH=68
Outdoor temp=93
Suction press=65 (should be 38F), Actual suction temp=81F same as room.
Superheat=81-38=43 High
Discharge press=350, (should be 143F) Actual temp=130F
Subcool=143-130=13 Normal
Compressor amps rated at 22, pulling only 18
Thanks,
Paul
