As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
APU FIRE WARNING WILL NOT TEST. TRANSFERRED TO DMI 11242 PER MEL 26-11, CAT. "C". PLACARD INSTALLED. REF. DMI 11242 - APU FIRE WARNING WILL NOT TEST. REMOVED AND REPLACED APU FIRE TEST RELAY, IAW BMM 26-15-0. NO HELP, DMI 11242 STILL IN EFFECT. REF. DMI 11242 - APU FIRE WARNING WILL NOT TEST. REMOVED AND REPLACED APU FIRE TEST POWER UNIT MM 26-15-00. DMI #11242 REMAINS OPEN.