As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING HEAVY MAINTENANCE: 14WL BATTERY FAULT. R & R 90WL4 EMERGENCY EXIT MARKER IAW AMM 33-51-13 ALSO REMOVED AND REPLACED 14WL EPSU IAW A321 AMM 33-51-38 EPSU OPERATIONAL CHECK DONE IAW A321 AMM 33-54-00-710-001-A 14WL NO FAULT AND WORKED GOOD OPS INTERFACE AND POWER UP TEST IAW A321 AMM 23-73-00-740-005-B DONE TEST OK ALL WORK ACCOMPLISHED ON WO W004054 NR N1079.