As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RECEIVED "BRAKE HOT" ECAM DUE TO NR 1 BRAKE EXCEEDING 300 DEGREES. DISCONTINUED TAKE OFF PRIOR TO 40 KNOTS. TEMPERATURE ON NR 1 BRAKE HEATS UP 200 DEGREES OVER NR 2 BRAKE TEMPERATURE, ON BOTH TAXI OUT AND TAXI IN. AIRCRAFT WAS GROUNDED. MAINTENANCE PERFORMED TROUBLE SHOOTING PER TSM 32-47-00 NO FAULTS NOTED. ACCOMPLISHED SATISFACTORY OPERATIONAL CHECK.