What was found
PRESURIZATION SYSTEM DOES NOT WORK ON AUTO, ALTERNATE, NEITHER MANUAL. PRESSURIZATION TOO HOT CANNOT MAKE COOLER IN AUTO AND MANUAL MODE, DUE MIX DO NOT MOVE TO COLD. FRM 216 440 00 216 450 00. CORRECTIVE ACTION: PERFORMED FIM 21-31 TASK 801 DCPC BITE PROCEDURE AMM 21-31-00/501 PRESSURIZATION CONTROL SYSTEM ADJUSTMENT TEST WITHOUT DISCREPANCIES ON GROUND. PACK ZONE TEMPERATURE CONTROLLER TEST IAW AMM 21-61-00-700-806-002 SYSTEM WORK NORMAL.