As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
RIGHT PACK WAS PUTTING OUT EXCESSIVE TEMP AIR MAIN CABIN WAS 87. ONLY WAY TO CONTROL CABIN TEMP WAS TO SHUT OFF RIGHT PACK. TEMP RETURNED TO NORMAL WITH PACK OFF. T/S IAW FIM BITE PERFORMED ON PACK TEMP CONTROL BOX ALL OK. INSP RT PACK FOUND RT RAM AIR EXT DOOR CLOSED. BAD ACTUATOR. REPLACED SAME IAW AMM. NOW OPS OK. RAN PACK ON GND ALL OK. CABIN TEMP IS CONTROLLABLE. A/C OK FOR SERVICE.