As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CABIN TEMP CONTROLLER DID NOT CONTROL THE TEMP. FULL COLD DUCT TEMP WENT TO 40 DEG C. DIFFICULT TO CONTROL OVERALL HOT UP FRONT AND COLD IN BACK. ACFT GROUNDED. TEMP CONTROL OPERATING NORMALLY. NO DEFECTS FOUND. ALL AREAS MODULATING NORMALLY IAW AMM 21-61-00-700-806-002.