a/c repair question

last fall my a/c started running all the time and not cooling. it is arheem built in 89 2 ton with a half evap coil not the a coil. so i put a gage set on it and it looked to be low on freon, so i called every local shop and no one wants to work on it because they say it is to old. i then ordered r22 and some freeze stop and waited until yesterday to service it.
so yesterday i injected the freeze stop sealer and then did a wet bulb and started adding r22, i used the super cool app to do the recharge using the wet bulb i got from the return register and the ls pressure and the temp at the vaper line at the service port. the unit takes 3# of r22

so the app told me to add r22 until ihad 10# in it. so i figure the app was not doing it job. so i pumped the r22 back inthe tank.

during that refill i did get frost back to the pump and maybe i should have stopped then as in cars when you see that it tells you to stop but the app said to add. the pt chart says if the pressure goes up and the ls temp goes up it is overcharged . so today i will pump more out until i see the frost at the pump and stop and see how that works.

any ideas how to go from there? when i stopped last night the ls was at 52# the hs was at 177# the ls tem was 37 deg. see the img to get the idea this was where i stopped. after pumping most back out. thanks bp

 

Sorry, this site doesn’t allow charging questions to be answered.

 

Unfortunately, Roughneck is correct in that DIY doesn't allow charging topics in the open forums.


doityourself.com/forum/air-conditioning-cooling-systems/315401-charging-your-a/c.