As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
WHILE ENROUTE FROM LNK TO DEN AT FLIGHT LEVEL 240,RECEIVED A LEFT PACK OVERPRESS CAUTION MESSAGE AND AIRCRAFT STARTED TO DEPRESSURIZE. PERFORMED EMERGENCY DECENT AND DIVERTED TO EAR. CABIN ALT WARNING AND CAUTION ILLUMINATED. MEL 21-51-1CCAT C . (FLIGHT 4648) COMPLIED WITH ECS PSI HEALTH CHECK TASK CARD 36-900-1002-SKY FOLLOWING THE PACK REPAIRS DMI CLEARED PLACARD REMOVED.