This will prolly keep me up thinking about this all so might as well share it with you all....avid reader and first post. Im a tech with around five yrs exp and still a noob and learn and read this forum pretty much everday, anyway to the problem.
Went on a return call today from our PM tech, he had a a/c with low pressure @ 200/40. Calls me up and tells me he tried to charge and no pressure change and then ran out of freon. No idea how much he put in either, he has no scale.
so go there today and find this
compressor at 13.8A
liquid is 220psi and 80 degrees
vapor 34psi and 49 degrees
temp drop on coil is 72 in 64 out 8 degree delta and cap. tubes are icing, a-coil otherwise is basically warm and dry.
This is a Rheem 4T 12 seer condensor with a 3.5T ICP coil with TXV, coil was existing and we ran lineset ( I think) and set condensor and only 8 months ago. Anyway I know thats not every thing...airflow is good, lineset not kinked, coils clean and low humidity.
So what Im thinking is a stuck almost closed TXV or god-forbid a plugged coil, also has a filter dryer but I think blockage is in the coil.
Any ideas before I yank the coil/TXV on Monday....anything Im over looking? All help greatly wanted and highly appreciated!