As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT ATTENDANTS REPORT CABIN TEMP EXCESSIVELY HOT FWD & AFT TEMP SELECTORS ON MAX COOL. RAN THE CABIN TEMPERATURE HOT QRH AND CABIN TEMP RETURNED TO NORMAL. TRIM AIR SWITCH REMAINED OFF FOR THE REMAINDER OF FLIGHT. GROUNDED - YES. ON DEFERRAL.