As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER SELECTING PACK 1 ON WE NOTICED A BURNING SMELL AND THEN RECEIVED A PACK 1 OVHT MSG. AFTER RUNNING QRH CHECKLIST PACK 1 WAS BLOWING HOT AIR IN FULL FOLD SETTING IN BOTH MANUAL AND AUTO MODES-C/A-REMOVED AND REPLACED PACK 1 ACM IAW AMM 21-51-03. PERFORMED OPERATIONAL CHECKS OF PACK #1 OPS CHECK GOOD. NO FUTHER DEFECTS NOTED