As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
LT PACK WENT FULL HOT UNCONTROLLABLE. DUCT TEMPS WERE 120 DEGREES WITH PACK CONTROLLER IN AUTO AND STBY. SELECTED PACK CONTROLLER TO COLD AND DECREASED DUCT TEMP. INSPECTED SENSORS, RAN BITE ON TEMP CONTROLLER, NO FAULTS. REPLACED PACK TEMP VALVE, ZONE TEMP CONTROLLER AND OVERHEAD CONTROL PANEL. SYSTEM CHECKS GOOD.