Low refrigerant pressures running at 57 and 148 are causing ice formations on the air coil. Ice does not melt down into the drain pan and down the floor drain as normal condensation during running would. Recharge 15 oz new r422b Disassemble ¾" PVC schedule 40 drain for sludge removal treatment and cleaning Clean all the remaining water standing on the floor in the mechanical room New refrigerant pressures after recharge or 59 with seven superheat at 40°, and 195psi discharge pressure Equipment has one of two compressors completely failed with no refrigerant and the second circuit has a confirmed refrigerant leak needing recharged multiple times per year. Compressor circuit 2 also has very low refrigerant suction pressures and temperatures indicating poor performance of the energy transfer on the air coil (heat is not going into the refrigerant to keep the pressure up to normal 65 or 70 PSI) ***Recommend replacing equipment as soon as possible. This equipment will be lucky to last