As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
FLIGHT DECK TEMP INOPERATIVE ILLUMINATED IN AUTO. FLT DECK TEMP OPERATES NORMALLY IN MANUAL. FOUND FLIGHT DECK CABIN TEMP SENSOR CLOGGED WITH LINT. CLEANED SENSOR AND ACCOMPLISHED FLIGHT DECK TRIM AIR VALVE OPERATIONAL CHECK. NO FURTHER FAULTS NOTED AT TEMP CONTROLLER. REPLACED FLIGHT DECK TRIM AIR VALVE.