This will only take you 1/2 an hour, it would be nice to see the numbers before you change the coil.
Originally posted by lmtd
First guess, and it is a PUNT, overcharge.
Need more data.
Air entering condenser
Air leaving condenser
Saturated condensing temperature (psig is fine if you do not have a saturation chart)
Liquid line leaving condenser
Liquid line at metering device (about 6" in front of it but after all accessories, right before it enters the air handler)
Air entering the evap
Air leaving evap
Suction saturation temp (psig is fine if you do not have a saturation chart)
Suction line temp at the evap (leaving air handler)
Suction line at the compressor (condenser service valve works too)
Compressor Amperage actual reading
Compressor RLA or FLA from the modle plate.
Get it all at the same time and you will get what you seek.