What was found
AFTER EXTENSIVE DE-ICE AND NORMAL TAKEOFF, IN CLIMB-OUT FROM MEM, RECEIVED REPETITIVE AVIONICS SMOKE ECAM. COMPLIED WITH ECAM/QRH PROCEDURES. USING SNIFFER FAN DID NOT DETECT AND SMOKE/ODORS. RETURNED TO LAND MEM. FOUND MOISTURE IN COCKPIT DUCT SMOKE DET(13WA), REMOVED AND REPLACED SAME. REF AMM 26-15-12-04 ALSO REMOVED AND REPLACED WATER SEPARATOR COALESCERS, PRECAUTIONARY. REF AMM 21-51-16-03. RAN PACKS AND ACCOMPLISHED OPERATIONAL TEST OF SMOKE DETECTION SYS, REF AMM 26-15-00-05. OPS CHECKED GOOD, NO FAULTS. A/C OK FOR SERVICE.