As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ACCOMPLISHING TC 7824900 FOUND APU FAULT CODE 49 41250. WHILE T/S APU CODE 49 41250 FOUND APU DRAWING 280 290 AMPS FROM BATTERY DURING START WITH GROUND POWER CONNECTED. FOUND APU START PWR UNIT GROUND STUD LOOSE. REPLACED APU START PWR UNIT REF MM 49 41 71 000 801, OPS CHECK OK. HARD FAULT CLEARED & ELEC SYS TEST OK. CONFIRMED FIX.