CE:3552 Cab Ac blowing warm air ~~~~~ CE: 3552 Cab Ac blowing warm air.  3552 cab A/c found blowing warm air. Found freon LP/HP : 10/80 psi. Purged and vacuumed freon, pressure able to hold - 30psi. Charged freon LP/HP : 65/245 psi. Preventively replaced cab A/C filter. Monitored for 1hrs, no fault reoccur. Cab was cooling.  Daniel/Redzwan 45293