What was found
AT FL 330 CABIN V/S CONSTANTLY AT 150 CLIMB, FWD OUTFLOW VALVE SHOWED NEARLY OPEN, SYS 1 REG FAULTED. SYS 2 TOOK OVER AS NECESSARY BUT CABIN V/S INCREASED TO 200FPM, THEN SELECTED MANUAL BUT OUTFLOW VALVE WOULD NOT CLOSE. ELECTED TO MAKE PRECAUTIONARY LANDING IN PHX AS UNABLE TO MAINTAIN CABIN ALT BELOW 10,000FT. FOLLOWED ALL ECAM AND QRH PROCEDURES. MEL/CDL: 21-31-02-A CATEGORY: C EXPIRATION: 05NOV07 "MEL 21-31-02-A: CABIN PRESS CTL SYSTEM NR 1 INOP SYSTEM 1. REMOVED AND REPLACED CABIN PRESSURE CONTROLLER POSITION NR 1 TEST OK AND BITE CHECKS NORMAL WRI 21-30/9624 COMPLETED PER TSI. REMOVED AND REPLACED AFT CABIN PRESSURE OUTFLOW VALVE, OPS CHECK GOOD, REF A300-600 AMM 21-31-12-4.