What was found
RIGHT (AIR CONDITIONING) PACK BLOWING HOT AIR ONLY ON CLIMB-OUT, AIR RETURNED TO MCO. (LEFT AIRCONDITIONING PACK INOP UNDER MEL 21-51-1). AIRCRAFT REPOSITIONED TO RDU (CREW ONLY) BOTH PACKS INOP UNDER MEL 21-51-1. REMOVED AND REPLACED NR 1 PACK WATER SEPARATOR ASSEMBLY IAW F-100 AMM 21-51-04. PERFORMED FUNCTIONAL TEST OF NR 2 PACK FLOW CONTROL VALVE IAW F-100 AMM 21-21-01, NO DEFECTS NOTED. REMOVED AND REPLACED NR 2 PACK CONDENSOR BAG IAW F-100 AMM 21-51-04. OPERATIONAL TEST OF BOTH AIR CONDITIONING PACKS GOOD IAW F-100 AMM 21-51-00.