As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
SKIN VALVE FAULT DISPLAYED ON UPPER ECAM SCREEN. - V ENT REMOVED AND REPLACED SKIN AIR OUTFLOW VALVE OPS CHECKS GOOD REF AMM 21-26-53-400-001-A ROTABLE PARTS CHANGE WAS INDICATED - TT # 1939473 SN OFF 3533 VALVE, SKIN AIR OFF 31-2125-9-0001 3533 ON 31-2125-9-0001 2301