As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
THERE IS AN ODOR ON THE AIRCRAFT WITH APU ON OR OFF AND BOTH ENGINES ON. ODOR REMAINED WITH BLEEDS OFF DURING DE-ICE. ALSO HAD STATUS MESSAGE ON ECAM "ONE PACK ONLY IF WAI ON". BLEED PAGE NORMAL. MAINTENANCE REMOVED AND REPLACED THE APU. LOAD COMPRESSOR SEAL DETERMINED TO BE ROOT CAUSE OF FAILURE.