[Bradical]

I agree with Kuehl, but if you have air in the system from a bad evacuation it will cause your head pressure to be elevated as well in most cases as well. I am sure it's air if you did not pull an effective vacuum on the system before charging. However- Elevated suction is typically indicative of elevated heat load (or humidity load, both take up system cooling capacity) coupled with that the compressor is at somewhat of a reduced compression ratio at idle.

If I had to guess... The suction reading is wrong, and actually lower, and the whole system is alittle undercharged.