Are these AC pressures good?
I have a small 17 yr old 1 1/2 ton Carrier central AC system for our master bedroom. IT's never really had any repair work until this past summer when the condenser fan went out. Not a big deal and I fixed it with an OEM replacement. It worked fine for a week and then I noticed that the unit wasn't keeping up in mid afternoon heat with thermostat set on 79. ONce the sun goes down it cools fine again. I know I could try to cover it with s sun screen but it was fine before. I checked the pressures tonight but it was after the outside temps and sun dropped. The low side is 65 psi and the high side is 240 psi. Would this indicate I need to add a pound or two of R22 or is the compressor getting weak?