As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
F/A REPORTS AFT LT LAV SMOKE ALARM CAME ON, SILENCED AFTER WATER WAS TURNED TO COLD. ACFT GROUNDED. TESTED AFT LT SMOKE DETECTOR IAW AMM 26-14-00, OP CHECKS GOOD. RAN HOT WATER IN AFT LAV FOR COUPLE OF MINUTES UNABLE TO DUPLICATE, SYS OP CHECKS GOOD.