I have a system I just installed 3 to 14 seer 410a
ac with a 5 ton evap. coil , txv, on a furnace with a 4 to drive.
pulled a good vacuum, and let 410a into the system.
suction side is at 150 psi, and the liquid lie pressure is bouncing between 375-550psi.
what the heck is going on???
any suggestions will be appreciated.