As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT 5282 - STL - ATL - ON CLIMB-OUT, RECEIVED BLEED 1 CLOSED MESSAGE AND A BURNING SMELL AROUND ROW 5A. FOUND THE PACK VALVE CIRCUIT BREAKER POPPED AND FOUND THE PACK VALVE WAS BURNT UP CAUSING THE CIRCUIT BREAKER TO POP. REMOVED AND REPLACED THE PACK VALVE. OPS CHECKED BOTH PACKS WITH ENGINE AND APU BLEEDS. NO SMELL NOTED.