What was found
SHORTLY AFTER TAKEOFF IN SNOW, WING ANTI-ICE VALVE FAULT INDICATED ON ECAM. TEMP 3C QRH PROCEDURES FOLLOWED WITH NO CHANGE IN FAULT LIGHT, PER CREW COMMENT RT WING WAS CAUSING FAULT. TESTED SYSTEM OPS CHECKED OK. DURING FURTHER T/S FOUND THAT EITHER VALVE WILL CAUSE FAULT TO ILLUM IN NORMAL OR ALT POSITION. INSPECTED DUCTING AND WIRING IN AREA OF LEADING EDGE, NO FAULTS FOUND. REMOVED AND REPLACED RT ALT VALVE PER A300-600 MM 30-11-11. VALVE LEAK CHECK AND OPS CHECK GOOD. TESTED SYSTEM AGAIN USING BOTH APU AND ENGINE BLEED AIR AND SYSTEM CHECKS GOOD. OFF MFG 3289614-3 POS RW2 SRL P1983C ON MFG 3289614-3 SRL P2250C.