I have been experiencing an a/c problem also but on the heat mode side. I have 4 A/C system with one giving me a icing problem on the compressor unit. Starting on the suction side and loop tubing of the remote unit is freezing up with heavy ice. The compressor is hot to touch. Check air handling unit… High fan, clean filter giving out warm air. Water flow thru compressor unit and 3 other unit’s has a high flow rate. Water temp is around low 50′s.