As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
CONTROL CABIN TEMP CONTROL INOPERATIVE. COCKPIT TEMP VERY COLD REGARDLESS OF WHERE CONTROL IS POSITIONED. ONLY WAY TO KEEP IT WARM IS TO TURN TRIM AIR OFF AND CONTROLL CAB OFF. ACFT GROUNDED. FOUND CONTROLL CABIN SENSOR FAULT ON BOTH PACK/ZONE TEMP CONTROLLERS. REPLACED CONTROL CABIN TEMP SENSOR. OPS CK GOOD. REF AMM 21-61-10.