As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN TEMP HOT RAN QRH AND TEMP IS CONTROLLABLE WITH TRIM AIR SWITCH OFF. TRIM AIR SWITCH PLACED IN THE OFF POSITION. PLACING TRIM AIR PRSOV PRIMARY CHANNEL ON DEFERRAL IN REF WITH MEL 2121M PLACING TRIM AIR PRSOV PRIMARY CHANNEL. RE-ACTIVATED PACK AND TURNED TRIM AIR ON, CABIN TEMP OPS GOOD REF AMM 21-62-01.