1684 During DT found A/C 1-2 Coolant pre ~~~~~ C/O #1684 A/C 1 EVAPORATOR,VACUUM SYSTEM,LEAK CHECK,CHARGE FREON,CHECK DI USER,FUNCTION CHECK ABLE TO CUT IN/OUT,MONITOR AN HRS CHECK OKIBRAHIM/JIMMY 19.10.20 #1684 AHU S/N OLD:331319 NEW:032056 NOTIFICATION:2211132  NO COOLANT PRESSURE FAULT. BOTH AC ABLE TO CUT IN/OUT. 3 CARS TEMPERATURE SETTING ADJUSTED TO 25°C. PREVENTIVE MEASURES: SWAPPED BOTH MCU TO #3684, MONITORED, NO ABNORMALITIES FOUND. TO BE MONITORED DURING MAIN LINE SERVICE.RAGHU,17/10/20