As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING TAKEOFF ROLL, BELOW 50 KTS WE RECEIVED A RT PACK AUTO FAIL MSG ON ED 1. A LOW SPEED ABORT AT 68,000 LBS TAKEOFF WEIGHT. THE MSG WENT AWAY AFTER THRUST LEVERS WERE RETURN TO IDLE. DEFERRED CABIN TEMP CONTROL SYS AUTO MODE. M PROCEDURES COMPLIED WITH IAW 21-64.