As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
"FLIGHT DECK TEMP" MSG IN FLIGHT FOLLOWED QRH PROCEDURE AND TURNED OFF TRIM AIR VALVE THEN "TRIM AIR" AFT CABIN TEMP AND FWD CABIN TEMP MSG DISPLAYED.(<P>PERFORMED OPS CHECK OF SYSTEM IAW AMM 21-61-00. OPERATIONAL TEST CHECKS GOOD AT THIS TIME. CANNOT DUPLICATE MSG AT THIS TIME.</P>)