As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
UNABLE TO CONTROL TEMP OF EITHER PACK, IN AUTO OR MANUAL MODES. DIVERTED AND MADE UNEVENTFUL LANDING. TROUBLESHOOTING FOUND FLOW CONTROL & SHUTOFF VALVE NOT OPERATING (OPEN OR CLOSE). FAILED TO OPEN & CLOSE ON GVI IN AFT EQUIPMENT BAY. R & R PACK FLOW CONTROL AND SHUTOFF VALVE IAW AMM TASK 21-52-01-000-801/400-801. OPS GOOD. RETURNED TO SERVICE.