CE reported 3656 A/C #1, 1656 A/C #2 & 2 ~~~~~ 2655 AC1-1, 1656 AC2-1, 3656 AC1-1 were found with low freon. No freon leakage was observed at CCU. Recharged abovementioned units to criteria. Function checked ok.  /FAIZAL/05.04.22