As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
MASTER WARNING ANNUNCIATED THEN WENT OFF AT ABOUT 100 KNOTS ON TAKEOFF. ABORTED THE TAKEOFF & RETURNED TO THE GATE. THE APU FIRE LOOP FAULT FLASHED AFTER THE TAKEOFF WAS REJECTED. PERFORMED BITE TEST OF THE APU FIRE & OVERHEAT DETECTION SYS IAW AMM 26-13-00-710-002-A, NO FAULTS NOTED. ACCOMPLISHED AFS GND SCAN 22-91-00-710-001-A & OPERATIONS CHECK OF THE FWS 31-50-00-710-002-A, NO FAULTS IN AIRMAN.