What was found
ECAM: VENT SKIN VALVE FAULT ON CLIMB OUT AT 6,000 FT. APPLIED PROC. 3.21.31 RETURNED TO AIRPORT. "NO" OVERWEIGHT LANDING. PERFORMED OPERATIONS TEST OF THE VENT AVEC SYSTEM, FOUND SKIN AIR INLET VALVE FAULTED RAR SKIN AIR INLET VALVE IAW AMM 21-26-52. OPERATION CHECKS GOOD.