As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AIRCRAFT WAS GROUNDED: AIRCRAFT AIR INTERRUPTED BACK TO MIA ON ACCOUNT OF PACK ISSUE. EMERGENCY WAS DECLARED.AIR CONDITIONING PAC TEMP CONTROL SYSTEM LEFT PACK LIGHT DURING RECAL. REMOVED AND REPLACED LEFT TEMPERATURE CONTROL VALVE (AALA202210147725) PER AMM 21-51-10 AND LEFT RAM AIR CONTROL TEMP SENSOR (AALA202210148433) PER AMM 21-51-50.