As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
ONCE GROUND AIR WAS DISCONNECTED AND ON APU BLEED AIR CABIN TEMP INCREASED AND WOULD NOT COOL. CONTROL CABIN AIR WAS COOL. FA'S AND PAX WERE EXTREMELY UNCOMFORTABLE. ACFT GROUNDED. PERFORMED A PACK TEMP CONTROL BITE PROCEDURE IAW AMM 21-62-801. NO FAULT FOUND. GROUND VERIFICATION SUCCESSFUL. NO HISTORY LAST 30 DAYS.