I have a jacked up 3 phase compressor, 460 v TRANE split system. Compressor seems to be bypassing. I have the loud hissing noise, but my head pressure is getting close to 600 psi and my suction is going to 100. This is an r22 system. WTF?
May be grossly over charged. I have seen the bypass open from that to creat the hiss, also check the heat transfer at the condenser enuf Cotten wood in a 3 layer coil in Alabama on a 105 degree roof will also get you this reaction.
