A321 Captain reported receiving a Vent Skin Valve fault after departing and as the aircraft continued to climb; a few other vent faults occurred. After unsuccessful troubleshooting; the flight crew opted to perform an air turn back.

Narrative

Departing ZZZ prior to 2;500 ft.; we received a Vent Skin Valve fault. After being transferred to Departure we were cleared to 6;000 ft. At 6;000 ft. we began troubleshooting. Control and radios were given to the FO (First Officer). They cleared us above 10;000 ft. but we requested to stay at 6;000 ft. for troubleshooting. We followed QRH; which was unsuccessful at clearing the fault. We then contacted Maintenance through Dispatch via SATCOM. With Maintenance we repeated the steps of the QRH; which again were unsuccessful. We then received a Vent Blower fault as well. After discussing options with Maintenance and Dispatch; it was determined that we did not have enough fuel to continue to destination at lower altitudes below 10;000 ft. We elected to return to ZZZ. After finishing call with Maintenance we advised ATC of intent to return to ZZZ. During preparation for return to ZZZ; we received another fault in addition to the 2 previous faults; Vent Extract fault. Upon landing in ZZZ we received the 4th fault of VENT AVNCS SYS fault.