What was found
DURING CLIMB, ECAM DISPLAYED VENT AVIONICS SYSTEM FAULT. OPS TEST OF THE AVIONICS EQUIMENT VENTILATION FROM MCDU WAS PERFORMED TEST SATISFACTORY IAW-AMM 21-26-71, 87-A. PERFORMED TROUBLESHOT IAW TSM 21-26--81-84, & AMM 21-26-53 PB41 THE SKIN AIR OULET VALVE 22HQ WAS REPLACED, TEST OK.