As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FWD CABIN TEMP CONTROLLER ERRATIC. ACFT GROUNDED. WHILE ON DEFERRAL, F/A COMPLAIN TEMP HOT IN BACK. UNABLE TO COOL IT DOWN FROM COCKPIT BELOW 20 C DUCT TEMP. R & R FWD CABIN TEMP SENSOR FAN IAW 21-61-11. OPS TESTS COMPLETE WITH NO FAULTS.