What was found
PASSING FL 240, BOTH PACKS FAULTED, C/W ECAM PROCEDURE. PACK WOULD NOT RESET, DESCENDED TO 10,000 FOR REMAINDER OF FLIGHT. PASSING 14,000 ON WAY BACK DOWN PACK FAULTS MAGICALLY WENT AWAY AND CABIN BEGIN TO STABILIZE PERFORMED SUCCESSFUL BITE TEST OF NR 1 AND NR 2 CABIN PRESSURE CONTROLLERS, REF TSM 21-30-00. PERFORMED SUCCESSFUL BITE TEST OF NR 2 PNEU SYS CONT, REF TSM 36-00-00. NR 1 PNEU SYS CONT FAILED SEVERAL LEGS- "CONTROLLER". REMOVED AND REPLACED NR 1 SYS PNEU CONT REF AMM 36-11-19-4. PERFORMED SUCCESSFUL CABIN PRESSURE CONTROL AND MONITORING ADJ/TEST, REF AMM 21-31-00-5.