As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RECEIVED A RT AIR CONDITIONING PACK TEMP CAUTION MESSAGE ALONG WITH A RT PACK OVERTEMP AND SMOKE IN THE CABIN. MAINTENANCE PLACED THE RT AIR CONDITIONING SYSTEM ON MEL. MAINTENANCE REPLACED THE DISCHARGE TEMPERATURE SENSOR, THE PACK TEMP CONTROL VALVE, AND THE AIR CYCLE MACHINE. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.