As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
PASSENGER CABIN TEMP EXCESSIVELY HOT. AIR TEMP CONTROL PANEL HAD FOLLOWING INDICATIONS DURING CRUISE FLIGHT. SUPPLY CONT CAB 5 FWD 4 AFT 4PASS CAB FWD 30, AFT 32 PACK : R 30 L 25. ACFT GROUNDED. COMPLIED WITH A LT PACK ZONE TEMP CONTROLLER BITE TEST IAW AMM 21-61-00-700-806-002, NO FAULTS NOTED. RUN APU AND ENGINES LT PACK WORKING NORMALLY, OK FOR SERVICE.