#3622 A/C 1-2 & A/C 2-2 Low side 0 PSI h ~~~~~ #3622 A/C 1-2 & A/C 2-2 Low side 0 PSI high side 200 PSI Unable to charge up freon.  #3622 A/C 1-2 & A/C 2-2 LP 0 PSI & HP 125 PSI Initial Checked #3622 A/C 1-2 & A/C 2-2 LP 0 PSI & HP 125 PSI Charged freon to 40 PS1 for LP. Run AC for less than 1 min & LP returned to 0 PS1. Checked for leakage & no leakage found  at CCU. Suspect evaporator leaking or choke. OPS 20 Raise to check evap.for leakage & to rectify. Short loop to BSD/RSD (AC Temp.24C) Elfyan/Khairul 44969 3622 To check A/C 1-2 & A/C 2-2 evap for choke & leak.