As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLT 1773 - CLT - SHORTLY AFTER TAKEOFF FROM CLT, THE AIR CONDITIONING CABIN SUPPLY TEMPERATURE REACHED 134 F. CREW CYCLED THE PACK ON AND OFF. HIGH CABIN SUPPLY TEMP STILL EXISTED. SINCE THE LEFT AIR CONDITIONING PACK WAS ON MEL, THE FLIGHT RETURNED TO CLT AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE ADJUSTED LEFT PRSOV AND REPLACED THE RIGHT TEMPERATURE CONTROL VALVE. (M)