As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB OUT CREW REPORTED ECAM DISPLAYED VENT SKIN VLV FAULT. SELECTED BOTH BLOWER & EXTRACT VLV TO OVERRIDE, BUT EXTRACT DOOR REMAINED HALF OPEN THROUGHOUT FLIGHT & LANDING. FLIGHT RETURNED TO FIELD & LANDED WITHOUT INCIDENT. R & R AEVC IAW AMM 21-26-34, PB401. OPERATIONS CHECKED OK.