Cab air-con was blowing warm air. Unableto reset. ~~~~~ FOUND CAB AC FREON LEVEL LOW.CHECKED FOUND VALVE CORE AT HP PIPE LEAK C/O NEW VALVE CORE.VACCUNN AND 2.1KG FREON.FUNCTION TEST OK.CHECKED HP/LP PRESSURE OK.MONITOR AN HOUR OK CUT IN/OUT OK .JIMMY/RAGHU 25.09.2022