As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ECAM MESSAGE APU AUTO SHUTDOWN DISPLAYED ON UPPER ECAM SCREEN, APU. CYCLED CB'S L41 & L42. TRIED SECOND START ATTEMPT, APU DID NOT START. NO FLAME AT START ATTEMPT. LISTEN FOR CLICKING SOUND. IF CLICKING HEARD SUSPECT FUEL, IF NO CLICKING HEARD CHECK IGN LEADS & PLUGS FOR CONNECTION ARCHING WEAR & REPAIR OR REPLACE AS NEEDED.