As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN TEMP WAS HOT MID CABIN, HOTTER AFT CABIN. QRH 2.7 CHECKLIST WAS RUN. PROBLEM SOLVED. PROBLEM SOVED WITH TRIM AIR SWITCH OFF FOR REMAINDER OF FLIGHT. ACFT GROUNDED. FOUND AFT CABIN TEMP SENSOR FILTER DIRTY AND CLOGGED. REMOVED AND REPLACED BOTH FWD AND AFT CABIN TEMP SENSOR FILTERS IAW AMM 21-61-06. RAN PACKS WITH TRIM AIR, NO DEFECTS NOTED.