A 20 ton rooftop york dm240n24b2aaa1e 2 years old. Head pessure 350 ambient today 75 on roof. Suction at best 60. Warm suction line. Subcooling 18. Customers sprinkler on roof because lint from laundry mat cloggs coil. Funny . Water on coil head down to about 225-250 subcooling the same suction line still warm. Still 55- 60 suction press. Temp. Accross drier dropped 5 deg. Circuit 1. Circuit 2 no refrigerant. Off on lpc. Im going back on monday to change drier. What do you think. Ill report back monday night.