As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FORWARD CABIN TEMP VERY OVERREACTIVE TO SMALL INPUTS ON FWD CABIN SWITCH. RANGE FROM 10-50. FOLLOWED QRH. TURNED TRIM AIR OFF AND TEMP STABILIZED. ACFT GROUNDED. FOUND THE FORWARD CABIN SENSOR RECIRCULATING FAN INOPERATIVE. FOUND CONNECTOR DISCONNECTED. SECURED THE CONNECTOR & OPS CHECKED NORMAL IAW FIM 21-61, TASK 864.