A319 First Officer reported a dual cabin pressure controller failure just as the descent began. The flight crew manually closed the outflow valve to control the cabin altitude and proceeded to safely land at destination airport.

Narrative

When beginning our descent into ZZZ around FL280 the lower ECAM screen automatically displayed the pressurization page. We noticed that the cabin altitude was climbing through 8;500 ft. at about 400 FPM. There were no other indications of something wrong and the outflow valve showed closed. The cabin altitude continued to rise and as it approached 1;000 ft. the Captain directed both of us to go on oxygen. We requested a descent below arrival altitudes and were given 13;000 ft. Cabin altitude exceeded 10;000 ft. but there was still no ECAM; warning; or other indication of a problem. To troubleshoot we turned on the manual pressurization controller and manually began closing the outflow valve; which stopped the cabin altitude rise and began lowering it. We manually lowered the cabin altitude to normal levels. We tried the auto-pressurization controller once again but the cabin altitude trended towards 10;000 ft. again so we returned to manual mode and manually controlled it to landing. The issue and steps to resolve it closely lined up with the Cabin Pressurization Controller 1 and 2 fault but there was never any ECAM or indication to show what the actual cause of the issue was. An uneventful landing was made in ZZZ and the issue was written up with Maintenance.