As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: PILOT REPORTS ON CLIMB OUT FELT SLIGHT DISCOMFORT IN EARS. THEN OUTLET VALVE TURNED AMBER FOLLOWED BY HIGH CLIMB RATE. STOPPED CLIMB AT 10,000 FEET. ECAM CABIN ALT ABOVE 9000 FEET, BEGAN DESCENT. MAINTENANCE REPLACED AEVC IAW AMM 21-26-34. OPS CHECKED GOOD. CANNOT DUPLICATE ON GROUND.