As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DURING CLIMB AND INITIAL CRUISE, THE RIGHT PACK COULD NOT KEEP A/C COOL (LT PACK MEL INOP). CABIN SUPPLY TEMP WAS 108 DEG AND CABIN TEMP WAS 90 DEG. RAN PACK IN BOTH AUTO AND MANUAL. FOUND RIGHT FLOW CONTROL VALVE NOT OPENING ALL THE WAY. REPLACED VALVE.